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In S.-I.,Pennsylvania State University | Almtoft K.P.,Danish Technological Institute DTI | Lee H.,Pennsylvania State University | Andersen I.H.,Danish Technological Institute DTI | And 3 more authors.
Bulletin of the Korean Chemical Society | Year: 2012

We present a low temperature (≈ 70 °C) method to prepare anatase, vertically aligned feather-like TiO 2 (VAFT) nanowire arrays via reactive pulsed DC magnetron sputtering. The synthesis method is general, offering a promising strategy for preparing crystalline nanowire metal oxide films for applications including gas sensing, photocatalysis, and 3rd generation photovoltaics. As an example application, anatase nanowire films are grown on fluorine doped tin oxide coated glass substrates and used as the photoanode in dye sensitized solar cells (DSSCs). AM1.5G power conversion efficiencies for the solar cells made of 1 μm thick VAFT have reached 0.42%, which compares favorably to solar cells made of the same thickness P25 TiO 2 (0.35%).

Nguyen V.,Hunan University | Nguyen V.,Hanoi University of Industry | Li W.,Hunan University | Pham V.,Hunan University | And 4 more authors.
Journal of Colloid and Interface Science | Year: 2016

A novel CdS/ZnSe/TiO2 nanotube array (NTA) photoelectrode was prepared by deposition of ZnSe nanoparticles (NPs) using pulse electrodeposition technique onto a TiO2 NTA. By successive ion layer adsorption and reaction (SILAR), CdS quantum dots (QDs) deposit onto a ZnSe/TiO2 NTA photoelectrode. The as-prepared CdS/ZnSe/TiO2 NTA photoelectrode performance is significantly improved, which not only greatly extends spatial separation of charges, but also enhance the utilization efficiency of visible-light. This system exhibits excellent charges transport property. The maximum photocurrent density of an 8.25mAcm-2 was observed in the CdS/ZnSe/TiO2 NTA photoelectrode, which is 37.5, 15.86 and 1.56 times higher than bare TiO2 NTA, ZnSe/TiO2 NTA, and CdS/TiO2NTA photoelectrodes, respectively. The photocatalytic activity of CdS/ZnSe/TiO2 NTA is tested by the degradation of methyl orange (MO) in distilled water under solar light irradiation of 100mW/cm2. Within about 120min of irradiation, 90.05% MO are removed. © 2015 Elsevier Inc.

Cardoso J.C.,Nanjing University of Technology | Grimes C.A.,Nanjing University of Technology | Feng X.,Flux Photon Corporation | Zhang X.,Nanjing University of Technology | And 3 more authors.
Chemical Communications | Year: 2012

We report on low-cost, all solution fabrication of efficient air-stable nanostructured thin film photovoltaics comprised of n-type Sb 2S 3 chemically deposited onto TiO 2 nanowire array films, forming coaxial Sb 2S 3/TiO 2 nanowire hybrids vertically oriented from the SnO 2:F coated glass substrate, which are then intercalated with poly(3-hexylthiophene) (P3HT) for hole transport and enhanced light absorption. This journal is © The Royal Society of Chemistry 2012.

Bao N.,Nanjing University of Technology | Feng X.,Flux Photon Corporation | Grimes C.A.,Nanjing University of Technology
Journal of Nanotechnology | Year: 2012

We review the use of self-assembled, vertically oriented one-dimensional (1D) titania nanowire and nanotube geometries in several third-generation excitonic solar cell designs including those based upon bulk heterojunction, ordered heterojunction, Frster resonance energy transfer (FRET), and liquid-junction dye-sensitized solar cells (DSSCs). Copyright © 2012 Ningzhong Bao et al.

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