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News Article | February 15, 2017
Site: www.marketwired.com

NOT FOR DISTRIBUTION IN THE UNITED STATES OR OVER UNITED STATES WIRE SERVICES NEWS RELEASE Petrocapita Income Trust (CSE:PCE.UN)(CSE:PCE.UN.CN) ("Petrocapita" or the "Trust") announces that it has closed a Purchase and Sale Agreement ("PSA") on February 9, 2017 for all of the Canadian oil and gas properties and assets of Maha Energy Inc. ('Maha") for $1,650,000 (plus or minus any adjustments pursuant to the PSA post-closing). The effective date of the transaction is January 1, 2017. The assets were acquired by issuance to Maha of cash due within the year and a convertible debenture secured by the assets acquired in the total amount of $1,650,000.00. The term of the debenture is 7 years, carries an interest rate of 6%, is amortized over 7 years beginning on March 15, 2017, and is convertible into common trust units of Petrocapita on or after December 31, 2017 at the volume weighted average trading price of such unit on the principal market for such units for each of the last 20 trading days prior to the date of conversion set by the exercise of the option to convert. The acquisition of the Maha assets results in the Trust's increasing its working interest in 20 heavy oil wells, 2 produced water disposal wells, and a produced water disposal facility with associated produced water disposal flowlines to 100% from approximately 58%. Details related to the Trust's reserves and facilities valuations and secured convertible debenture closings to date related to the acquisition and development capital have been filed with the Canadian Securities Exchange (www.theCSE.com). Petrocapita Income Trust is a Specified Investment Flow Through trust developing and acquiring heavy oil production and infrastructure assets in the Lloydminster area of east central Alberta and west central Saskatchewan through its wholly owned subsidiary, Petrocapita Oil and Gas LP. Petrocapita owns or has interest in 435 gross (416.3 net) oil wells, 89 gross (20 net) gas wells, 19 produced water disposal facilities, 3 custom oil processing facilities, 3 natural gas compressor stations, 72.75 km in pipelines, oilwell service rigs, fluid haul tractors and trailers, motor graders, and wellsite processing equipment. It is seeking accretive opportunities to acquire both oil production and complimentary midstream assets during a cyclical low in the oil and gas markets. This news release contains certain forward-looking information as defined under applicable securities legislation. All statements, other than statements of historical facts, with respect to activities, circumstances, events, outcomes and other matters that Petrocapita forecasts, plans, projects, estimates, expects, believes, assumes or anticipates (and other similar expressions) will, should or may occur in the future, are considered forward-looking information. In particular, forward-looking information contained in this news release includes, but is not limited to, information and statements concerning the Offering; the securities to be issued pursuant to the Offering and the timing of such issuance; the use of proceeds from the Offering; the completion of potential acquisitions, including the cost and timing of completion of same; the magnitude of obligations and liabilities assumed in connection with acquisitions; the degree to which potential acquisitions may be debt funded; and the estimate of follow-on capital expenditure requirements in respect to potential acquisitions of oil and gas properties. The forward-looking information provided in this news release is based on management's current beliefs, expectations and assumptions, based on currently available information as to future events (including the outcome and timing thereof). Petrocapita cautions that assumptions have been made regarding, the use of proceeds, liquidity, plans for future operations, the ability of Petrocapita to complete acquisitions, the magnitude of obligations and liabilities assumed in connection with acquisitions, timing and amount of future capital expenditures, and Petrocapita's investment objectives and strategies, all of which are subject to all of the risks and uncertainties normally incident to the acquisition, development, production and sale of oil and gas. These risks include, but are not limited to: the inability to raise capital on the terms of the Offering in a timely manner or at all; the inability to source and complete acquisitions; unanticipated operational and development issues which escalate capital expenditure requirements; volatility in market prices and demand for crude oil; general economic, market and business conditions; the loss of key personnel; the failure to realize the benefits of acquisitions made; the inability to generate sufficient cash flow from operations to meet current and future obligations; unforeseen liabilities and obligations; the inability to obtain required debt and/or equity capital on acceptable terms or at all; adverse regulatory, royalty or tax changes; diversion of management to manage unforeseen business or operating issues; risks related to the acquisition, exploration, development and production of oil and natural gas reserves; and other risks as described in documents and reports that Petrocapita files with the securities commissions or similar authorities in applicable Canadian jurisdictions on the System for Electronic Document Analysis and Retrieval (SEDAR). Any of these factors could cause Petrocapita's actual results and plans to differ materially from those contained in the forward-looking information. Forward-looking information is subject to a number of risks and uncertainties, including those mentioned above, that could cause actual results to differ materially from the expectations set forth in the forward-looking information. Forward-looking information is not a guarantee of future performance or an assurance that our current estimates, assumptions and projections are valid. All forward-looking information speaks only as of the date of this news release, and Petrocapita assumes no obligation to, and expressly disclaims any obligation to, update or revise any forward-looking information, except as required by law. You should not place undue reliance on forward-looking information. You are encouraged to closely consider the additional disclosures and risk factors contained in Petrocapita's periodic filings on SEDAR (www.sedar.com) that discuss in further detail the factors that could cause future results to be different than contemplated in this news release.


Nonfullerene polymer solar cells (PSCs) are fabricated with a perylene monoimide-based n-type wide-bandgap organic semiconductor PMI-F-PMI as an acceptor and a bithienyl-benzodithiophene-based wide-bandgap copolymer PTZ1 as a donor. The PSCs based on PTZ1:PMI-F-PMI (2:1, w/w) with the treatment of a mixed solvent additive of 0.5% N-methyl pyrrolidone and 0.5% diphenyl ether demonstrate a very high open-circuit voltage (V ) of 1.3 V with a higher power conversion efficiency (PCE) of 6%. The high V of the PSCs is a result of the high-lying lowest unoccupied molecular orbital (LUMO) of −3.42 eV of the PMI-F-PMI acceptor and the low-lying highest occupied molecular orbital (HOMO) of −5.31 eV of the polymer donor. Very interestingly, the exciton dissociation efficiency in the active layer is quite high, even though the LUMO and HOMO energy differences between the donor and acceptor materials are as small as ≈0.08 and 0.19 eV, respectively. The PCE of 6% is the highest for the PSCs with a V as high as 1.3 V. The results indicate that the active layer based on PTZ1/PMI-F-PMI can be used as the front layer in tandem PSCs for achieving high V over 2 V.


News Article | February 16, 2017
Site: www.marketwired.com

NOT FOR DISTRIBUTION IN THE UNITED STATES OR OVER UNITED STATES WIRE SERVICES Petrocapita Income Trust (CSE:PCE.UN)(CSE:PCE.UN.CN) ("Petrocapita" or the "Trust") announces that it has closed a Purchase and Sale Agreement ("PSA") on February 13, 2017 for 10 wells and associated production equipment in the Kitscoty area of Alberta from Twin Butte Energy Ltd. ("Twin Butte") through Twin Butte's Receiver Manager, FTI Consulting Canada Inc. ("FTI") for $21,825.29 (plus or minus any adjustments pursuant to the PSA post-closing). The Trust estimates future abandonment and reclamation obligations associated with these assets of approximately $485,000. The effective date of the transaction is December 1, 2016. This acquisition compliments the Trust's original 9 wells and associated production equipment, a water disposal facility, and 0.8 km of flowlines and 7 wells with associated production equipment from Twin Butte in April 2015; and the acquisition of 3 wells with associated production equipment from Sahara Energy Ltd. in September 2016, all completed in the same Mannville pool with a cumulative recovery to date of less than 5%. With a 100% interest in 29 wells and a central disposal facility, the Trust believes it is positioned to substantially improve recovery and production in the area. Details related to the Trust's reserves and facilities valuations and secured convertible debenture closings to date related to the acquisition and development capital have been filed with the Canadian Securities Exchange (www.theCSE.com). Petrocapita Income Trust is a Specified Investment Flow Through trust developing and acquiring heavy oil production and infrastructure assets in the Lloydminster area of east central Alberta and west central Saskatchewan through its wholly owned subsidiary, Petrocapita Oil and Gas LP. Petrocapita owns or has interest in 445 gross (426.3 net) oil wells, 89 gross (20 net) gas wells, 19 produced water disposal facilities, 3 custom oil processing facilities, 3 natural gas compressor stations, 72.75 km in pipelines, oilwell service rigs, fluid haul tractors and trailers, motor graders, and wellsite processing equipment. It is seeking accretive opportunities to acquire both oil production and complimentary midstream assets during a cyclical low in the oil and gas markets. This news release contains certain forward-looking information as defined under applicable securities legislation. All statements, other than statements of historical facts, with respect to activities, circumstances, events, outcomes and other matters that Petrocapita forecasts, plans, projects, estimates, expects, believes, assumes or anticipates (and other similar expressions) will, should or may occur in the future, are considered forward-looking information. In particular, forward-looking information contained in this news release includes, but is not limited to, information and statements concerning the magnitude of abandonment and reclamation obligations associated with the acquired assets, and the ability of the Trust to improve recovery and production from its assets in the Kitscoty area of Alberta. The forward-looking information provided in this news release is based on management's current beliefs, expectations and assumptions, based on currently available information as to future events (including the outcome and timing thereof). Petrocapita cautions that assumptions have been made regarding the magnitude of abandonment and reclamation obligations associated with the acquired assets, and the ability of the Trust to improve recovery and production from its assets in the Kitscoty area of Alberta, all of which are subject to all of the risks and uncertainties normally incident to the development, production, reclamation and abandonment of oil and gas assets. These risks include, but are not limited to: unanticipated operational, development and abandonment/reclamation issues; general economic, market and business conditions; the loss of key personnel; the failure to realize the benefits of acquisitions made; unforeseen liabilities and obligations; adverse regulatory, royalty or tax changes; and other risks as described in documents and reports that Petrocapita files with the securities commissions or similar authorities in applicable Canadian jurisdictions on the System for Electronic Document Analysis and Retrieval (SEDAR). Any of these factors could cause Petrocapita's actual results and plans to differ materially from those contained in the forward-looking information. Forward-looking information is subject to a number of risks and uncertainties, including those mentioned above, that could cause actual results to differ materially from the expectations set forth in the forward-looking information. Forward-looking information is not a guarantee of future performance or an assurance that our current estimates, assumptions and projections are valid. All forward-looking information speaks only as of the date of this news release, and Petrocapita assumes no obligation to, and expressly disclaims any obligation to, update or revise any forward-looking information, except as required by law. You should not place undue reliance on forward-looking information. You are encouraged to closely consider the additional disclosures and risk factors contained in Petrocapita's periodic filings on SEDAR (www.sedar.com) that discuss in further detail the factors that could cause future results to be different than contemplated in this news release.


News Article | February 17, 2017
Site: www.marketwired.com

CALGARY, ALBERTA--(Marketwired - Feb. 17, 2017) - Petrocapita Income Trust (CSE:PCE.UN)(CSE:PCE.UN.CN) ("Petrocapita" or the "Trust") announces the close of an additional $427,000, for aggregate gross proceeds to date of $6,952,000 from the sale of its 8% secured convertible debentures (the "Convertible Debentures") pursuant to its previously announced private placement offering of these Convertible Debentures. The maximum amount to be raised has been increased to $15,000,000. This is in addition to the previously announced gross proceeds from the sale of a $5,000,000 secured debenture (the "Debenture") of which $3,000,000, plus or minus any final post closing adjustments, spent for the acquisition of the assets of Palliser Oil and Gas Corporation pursuant to its previously announced private placement offering of this Debenture and the acquisition. Details related to the Convertible Debenture closings to date have been filed with the Canadian Securities Exchange (www.theCSE.com) and under Petrocapita's profile on SEDAR (www.sedar.com). Petrocapita Income Trust is a Specified Investment Flow Through trust developing and acquiring heavy oil production and infrastructure assets in the Lloydminster area of east central Alberta and west central Saskatchewan through its wholly owned subsidiary, Petrocapita Oil and Gas L.P. Petrocapita owns and operates 445 gross (426.3 net) oil wells, 89 gross (20 net) gas wells, 19 produced water disposal facilities, 3 custom oil processing facilities, 3 natural gas compressor stations, 72.75 km in pipelines, oil well service rigs, fluid haul tractors and trailers, motor graders, and well site processing equipment. It is seeking accretive opportunities to acquire both oil production and complimentary midstream assets during a cyclical low in the oil and gas markets.


News Article | February 15, 2017
Site: www.spie.org

A multiple-cation engineering strategy is used to realize devices with open-circuit voltages that are close to the thermodynamic limit, as well as high electroluminscence and stability at elevated temperatures. Perovskites have emerged as an attractive low-cost option for high-efficiency photovoltaic (PV) materials, which have certified power conversion efficiencies (PCEs) that approach those of established technologies (up to 22.1%).1 The perovskites that are used for such PVs generally have an ABX structure, i.e., where the cation A is methylammonium (MA), formamidinium (FA), or cesium (Cs), the metal B is lead (Pb) or tin, and the halide X is either chlorine, bromine, or iodine (I). Single-cation perovskites, however, often suffer from phase, temperature, or humidity instabilities, and poor reproducibility. These problems are particularly noteworthy for the perovskites CsPbX and FAPbX , which are only stable at room temperature as photoinactive (‘yellow’) phases rather than as more-desirable photoactive (‘black’) phases (stable at higher temperatures). In addition to achieving phase stability, it is also necessary to operate perovskite solar cells (PSCs) at elevated temperatures (i.e., of more than 85°C) to surpass current industrial norms. In recent work, double-cation perovskites (which include MA and FA, or Cs and FA) were shown to be stable as a black phase at room temperature.2–4 These materials also exhibit unexpected and novel properties. For example, Cs–FA mixtures suppress halide segregation and thus enable suitable band gaps for perovskite/silicon or perovskite/perovskite tandem PVs.5 In general, it has been found that by adding more components to the perovskite, their entropy is increased and unstable materials can thus be stabilized. For instance, the yellow phase of FAPbI can be avoided by using (also unstable) CsPbI . In our work we have thus developed this cation-mixing approach further, to investigate triple-cation (containing Cs, MA, and FA) perovskites.6 For example, we show the tolerance factor (t)—a geometric measure for the distortion of a perovskite—for various APbI perovskites in Figure 1. In particular, we focus on alkali-metal cations because they are stable to oxidation. So-called ‘established’ perovskites (i.e., containing Cs, MA, or FA)—with t between 0.8 and 1.0—exhibit the photoactive black phase at room temperature, and are thus used for high-efficiency PSCs.7, 8 In contrast, perovskites with lower t (i.e., containing lithium, sodium, or potassium) have non-photoactive yellow phases. Our tolerance factor calculations also show that rubidium (Rb) is very close to the yellow/black phase threshold (although seemingly too small) and is thus a good candidate for integration into the perovskite lattice. We have therefore used a general multiple-cation engineering strategy to integrate Rb (which never exhibits a black phase when used in a single-cation perovskite) and to study novel multication perovskites.7 Figure 1. (A) Tolerance factor (t) of different APbI -structure perovskites, where Pb is lead, I is iodine, and A is an oxidation-stable cation, i.e., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), methylammonium (MA), or formamidinium (FA). Perovskites with t between 0.8 and 1.0 exhibit a photoactive ‘black’ phase (solid circles), whereas those with lower t have non-photoactive ‘yellow’ phases (open circles). The t of Rb is very close to the 0.8 threshold and is thus a good candidate for integration into the perovskite lattice. (B) Photographs of CsPBI (top) and RbPbI (bottom) perovskites at 28, 380, and 460°C. Irreversible melting for both compounds occurs at 460°C, and RbPbI never exhibits a black phase. (A) Tolerance factor (t) of different APbI-structure perovskites, where Pb is lead, I is iodine, and A is an oxidation-stable cation, i.e., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), methylammonium (MA), or formamidinium (FA). Perovskites with t between 0.8 and 1.0 exhibit a photoactive ‘black’ phase (solid circles), whereas those with lower t have non-photoactive ‘yellow’ phases (open circles). The t of Rb is very close to the 0.8 threshold and is thus a good candidate for integration into the perovskite lattice. (B) Photographs of CsPBI(top) and RbPbI(bottom) perovskites at 28, 380, and 460°C. Irreversible melting for both compounds occurs at 460°C, and RbPbInever exhibits a black phase. 7 We have also recently demonstrated very high performance (i.e., excellent PCEs) for MAFA double-cation perovskites.1 From our x-ray diffraction analyses of such MAFA compounds, however, we found that they still contained detrimental, photoinactive yellow phase impurities: see Figure 2(a). Such impurities are one of the reasons for the unreproducible behavior of these perovskites. We thus added Cs to the compounds—to create a triple-cation perovskite—and achieved a substantially suppressed yellow phase (because of better-matched t values). With our triple-cation perovskites—see Figure 2(b)—we can obtain stabilized PCEs of 21.1% and improved reproducibility.6 Figure 2. (a) X-ray diffraction spectra for a MAFA double-cation perovskite and a CsMAFA triple-cation perovskite. The yellow phase impurities, at a measured angle of diffraction (2θ) of 11.6°, in the MAFA spectrum disappear upon addition of Cs. (b) Statistics for 40 MAFA and 98 CsMAFA perovskite photovoltaic devices. All device parameters—i.e., open-circuit voltage (V ), short-circuit current density (J ), fill factor, and power conversion efficiency (PCE)—as well as the standard deviation (a metric of the reproducibility) are improved upon addition of Cs. Twenty different devices have a PCE of more than 20%. (a) X-ray diffraction spectra for a MAFA double-cation perovskite and a CsMAFA triple-cation perovskite. The yellow phase impurities, at a measured angle of diffraction (2θ) of 11.6°, in the MAFA spectrum disappear upon addition of Cs. (b) Statistics for 40 MAFA and 98 CsMAFA perovskite photovoltaic devices. All device parameters—i.e., open-circuit voltage (V), short-circuit current density (J), fill factor, and power conversion efficiency (PCE)—as well as the standard deviation (a metric of the reproducibility) are improved upon addition of Cs. Twenty different devices have a PCE of more than 20%. 6 In the next stage of our work we added Rb to our single, double, and triple-cation perovskites, and thus doubled the number of available compositions. Specifically, we investigated the novel compositions of RbFA, RbCsFA, RbMAFA, and RbCsMAFA. Our results show that the quadruple-cation RbCsMAFA perovskite—see Figure 3(a)—yielded the best performance (i.e., with a stabilized PCE of 21.6%). For this device we also measured an open-circuit voltage of 1250mV, at a band gap of 1630mV, and a loss-in-potential (the difference between the band gap and open-circuit voltage) of 390mV. This is among the lowest values for any PV materials yet measured and indicates that it is a nearly recombination-free material. We are thus able to operate a solar cell made from this material as an LED, even at ambient conditions: see Figure 3(b). We have also demonstrated—see inset to Figure 3(a)—that polymer-coated multication PSCs can be operated at elevated temperatures (more than 85°C) to achieve full illumination and load for 500 hours (i.e., exceeding industrial requirements). Figure 3. (a) Current density–voltage curve for the best-performing Rb-containing solar cell (i.e., a RbCsMAFA device), with a stabilized PCE of 21.6%. Inset: Thermal stability of a polymer-coated perovskite solar cell that has an efficiency of more than 17%. This device was aged for 500 hours at 85°C, under continuous illumination and maximum power point tracking conditions, in nitrogen atmosphere (red curve). The cell retained 95% of its initial performance, as indicated by the dashed gray line, which is normalized (norm) to the aged result. (a) Current density–voltage curve for the best-performing Rb-containing solar cell (i.e., a RbCsMAFA device), with a stabilized PCE of 21.6%. Inset: Thermal stability of a polymer-coated perovskite solar cell that has an efficiency of more than 17%. This device was aged for 500 hours at 85°C, under continuous illumination and maximum power point tracking conditions, in nitrogen atmosphere (red curve). The cell retained 95% of its initial performance, as indicated by the dashed gray line, which is normalized (norm) to the aged result. 7 (b) Photograph of a RbCsMAFA solar cell (mounted in a custom-made device holder) operated as an LED, with temperature and ambient-gas control. A bright emission at 1.63eV is visible even under ambient room-light conditions. In summary, we have investigated a multiple-cation (i.e., triple and quadruple) approach to achieve stable perovskite materials for efficient solar cells. We have also successfully integrated Rb (normally considered too small for these materials) as a cation into such perovskites. Our multication perovskites are thus essential for achieving robust and reproducible solar cells, i.e., which are less prone to phase, temperature, and humiditiy instabilities than single-cation perovskites. In addition, we have demonstrated that polymer-coated PSCs can withstand stress tests that are harsher than industrial norms (i.e., heating at 85°C, under full illumination and load conditions, for 500 hours), which is a crucial step toward the industrialization of perovskite materials. In the next stages of our work we need to thoroughly investigate our newly established compositions. This work will include an assessment of viability toward upscaling, as well as further stability testing (e.g., cycling of temperature, humidity, and sealing). Michael Saliba acknowledges support from a Marie Skaaaodowska Curie fellowship and a H2020 grant agreement (66566). He is also grateful to his colleagues at the École Polytechnique Fédérale de Lausanne's Laboratory for Photonics and Interfaces and the Laboratory of Photomolecular Science for fruitful collaborations. In particular, he thanks Michael Grätzel and Anders Hagfeldt for their support. École Polytechnique Fédérale de Lausanne (EPFL) Michael Saliba is a Marie Curie Fellow at EPFL, where he works with the Grätzel and Hagfeldt group. He completed his PhD at Oxford University, UK, in 2014 as part of Henry Snaith's group. His research is generally focused on optoelectronic properties of emerging photovoltaic technologies, with an emphasis on PSCs. 3. N. J. Jeon, J. H. Noh, W. S. Yang, Y. C. Kim, S. Ryu, J. Seo, S. I. Seok, Compositional engineering of perovskite materials for high-performance solar cells, Nature 517, p. 476-480, 2015. 4. J.-W. Lee, D.-H. Kim, H.-S. Kim, S.-W. Seo, S. M. Cho, N.-G. Park, Formamidinium and cesium hybridization for photo- and moisture-stable perovskite solar cell, Adv. Energy Mater. 5, 2015. doi:10.1002/aenm.201501310 7. M. Saliba, T. Matsui, K. Domanski, J.-Y. Seo, A. Ummadisingu, S. M. Zakeeruddin, J.-P. Correa-Baena, et al., Incorporation of rubidium cations into perovskite solar cells improves photovoltaic performance, Science 354, p. 206-209, 2016. 8. G. Kieslich, S. Sun, A. K. Cheetham, Solid-state principles applied to organic-inorganic perovskites: new tricks for an old dog, Chem. Sci. 5, p. 4712-4715, 2014.


News Article | February 15, 2017
Site: news.yahoo.com

WASHINGTON (Reuters) - U.S. producer prices recorded their largest gain in more than four years in January amid increases in the cost of energy products, but a strong dollar continued to keep underlying inflation at the factory gate tame. Rising raw material costs are boosting producer prices across the globe, notably in China, which is the biggest source of U.S. imports. But economists still expect overall U.S. inflation to keep climbing gradually given the buoyant dollar. "China saw the biggest price gain since 2011 in January. Given that most of the upward price pressure is the result of raw materials prices returning from the depths of last year, the longer-term view continues to be wary but not alarmed," said Jay Morelock, an economist at FTN Financial in New York. The U.S. Labor Department said on Tuesday its producer price index for final demand jumped 0.6 percent last month, which was the biggest rise since September 2012 and followed a 0.2 percent gain in December. Higher prices for some services also contributed to the increase in January. Economists had expected the PPI to rise 0.3 percent in January. Despite the surge, the PPI only increased 1.6 percent in the 12 months through January after a similar gain in December. A measure of underlying producer price pressures that excludes food, energy and trade services advanced 0.2 percent after edging up 0.1 percent in December. The so-called core PPI rose 1.6 percent in the 12 months through January, slowing from December's 1.7 percent gain. The Federal Reserve has a 2 percent inflation target. Gradually rising inflation together with a tightening labor market and firming economic growth should position the Fed to continue raising interest rates this year. The U.S. central bank raised rates in December and projected three more hikes in 2017. Fed Chair Janet Yellen told U.S. lawmakers on Tuesday that waiting too long to raise borrowing costs would be "unwise." The dollar <.DXY> was trading higher on Yellen's comments, touching a three-week high against a basket of currencies. U.S. government bond prices fell while stocks on Wall Street were mixed. More U.S. manufacturers are reporting paying higher prices for raw materials. The Institute for Supply Management's (ISM) prices index surged in January to its highest level since May 2011. Closely correlated to the PPI, the ISM index has advanced for 11 straight months. Those gains largely reflected increases in the prices of commodities such as crude oil, which are rising due to a steadily growing global economy. Oil prices have climbed above $50 per barrel. But with the dollar strengthening further against the currencies of the United States' main trading partners and wage growth still moderate, the spillover to consumer inflation from rising commodity prices is likely to be limited. A government report on Friday showed import prices excluding fuels fell in January for a third straight month. Data on Wednesday is expected to show the consumer price index increased 0.3 percent last month after a similar gain in December, according to a Reuters survey of economists. "While the trend in inflation remains upward, it is not quickening as fast as today's headline suggests. Inflation is not an immediate issue for the Fed," said Sarah House, an economist at Wells Fargo Securities in New York. Last month, prices for final demand goods increased 1.0 percent, the largest rise since May 2015. The gain accounted for more than 60 percent of the increase in the PPI. Prices for final demand goods advanced 0.6 percent in December. Wholesale food prices were unchanged last month after climbing 0.5 percent in December. Healthcare costs edged up 0.2 percent. Those costs feed into the Fed's preferred inflation measure, the core personal consumption expenditures (PCE) index. The volatile trade services component, which measures changes in margins received by wholesalers and retailers, shot up 0.9 percent in January after being unchanged in the prior month.


A fullerene derivative (α-bis-PCBM) is purified from an as-produced bis-phenyl-C -butyric acid methyl ester (bis-[60]PCBM) isomer mixture by preparative peak-recycling, high-performance liquid chromatography, and is employed as a templating agent for solution processing of metal halide perovskite films via an antisolvent method. The resulting α-bis-PCBM-containing perovskite solar cells achieve better stability, efficiency, and reproducibility when compared with analogous cells containing PCBM. α-bis-PCBM fills the vacancies and grain boundaries of the perovskite film, enhancing the crystallization of perovskites and addressing the issue of slow electron extraction. In addition, α-bis-PCBM resists the ingression of moisture and passivates voids or pinholes generated in the hole-transporting layer. As a result, a power conversion efficiency (PCE) of 20.8% is obtained, compared with 19.9% by PCBM, and is accompanied by excellent stability under heat and simulated sunlight. The PCE of unsealed devices dropped by less than 10% in ambient air (40% RH) after 44 d at 65 °C, and by 4% after 600 h under continuous full-sun illumination and maximum power point tracking, respectively.


News Article | February 21, 2017
Site: onlinelibrary.wiley.com

Organometal halide perovskite materials have become a superstar in the photovoltaic (PV) field because of their advantageous properties, which boost the power conversion efficiency (PCE) of perovskite solar cells (PSCs) from about 3.8% to above 22% in just seven years. Most importantly, such promising achievement is mainly based on its low-cost and solution-processed fabrication technique. One of the most promising and famous approaches to fabricating perovskite is a two-step sequential deposition method because precursor (e.g., PbI ) deposition is controllable, versatile, and flexible. Due to tremendous efforts, great progress has been achieved on the two-step sequential deposition method, which helps to promote the development of PSCs. Herein, the progresses on the two-step sequential deposition method of perovskite layers is reviewed thoroughly. At first, the reaction process and principle is introduced and discussed. Then, the research on the deposition techniques, structures, and compositions of precursors (the first step) is presented. Subsequently, the developments on the conversion techniques, conversion solutions, and growth of large crystals at the second step are introduced. Finally, four important issues on the two-step sequential deposition method will be stated, accompanied with proposed solutions.


The mechanical flexibility of substrates and controllable nanostructures are two major considerations in designing high-performance, flexible thin-film solar cells. In this work, we proposed an approach to realize highly ordered metal oxide nanopatterns on polyimide (PI) substrate based on the sol-gel chemistry and soft thermal nanoimprinting lithography. Thin-film amorphous silicon (a-Si:H) solar cells were subsequently constructed on the patterned PI flexible substrates. The periodic nanopatterns delivered broadband-enhanced light absorption and quantum efficiency, as well as the eventual power conversion efficiency (PCE). The nanotextures also benefit for the device yield and mechanical flexibility, which experienced little efficiency drop even after 100,000 bending cycles. In addition, flexible, transparent nanocone films, obtained by a template process, were attached onto the patterned PI solar cells, serving as top anti-reflection layers. The PCE performance with these dual-interfacial patterns rose up to 8.17%, that is, it improved by 48.5% over the planar device. Although the work was conducted on a-Si:H material, our proposed scheme can be extended to a variety of active materials for different optoelectronic applications.


Sn-based perovskites are promising Pb-free photovoltaic materials with an ideal 1.3 eV bandgap. However, to date, Sn-based thin film perovskite solar cells have yielded relatively low power conversion efficiencies (PCEs). This is traced to their poor photophysical properties (i.e., short diffusion lengths (<30 nm) and two orders of magnitude higher defect densities) than Pb-based systems. Herein, it is revealed that melt-synthesized cesium tin iodide (CsSnI ) ingots containing high-quality large single crystal (SC) grains transcend these fundamental limitations. Through detailed optical spectroscopy, their inherently superior properties are uncovered, with bulk carrier lifetimes reaching 6.6 ns, doping concentrations of around 4.5 × 1017 cm−3, and minority-carrier diffusion lengths approaching 1 µm, as compared to their polycrystalline counterparts having ≈54 ps, ≈9.2 × 1018 cm−3, and ≈16 nm, respectively. CsSnI SCs also exhibit very low surface recombination velocity of ≈2 × 103 cm s−1, similar to Pb-based perovskites. Importantly, these key parameters are comparable to high-performance p-type photovoltaic materials (e.g., InP crystals). The findings predict a PCE of ≈23% for optimized CsSnI SCs solar cells, highlighting their great potential.

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