Phono Solar Technology Co.

Nanjing, China

Phono Solar Technology Co.

Nanjing, China
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Zheng C.,Nanjing University of Aeronautics and Astronautics | Shen H.,Nanjing University of Aeronautics and Astronautics | Pu T.,Nanjing University of Aeronautics and Astronautics | Pu T.,Phono Solar Technology Co. | And 6 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2017

A novel one-step metal assisted chemical etching (MACE) method with Ag and Cu dual elements as catalysts at room temperature was introduced to prepare anti-reflection structures on multicrystalline silicon (mc-Si). The effects of etching time and molar ratio of Ag/Cu on the reflectance and surface morphology of mc-Si wafer were systematically studied. The reflectance was analyzed by spectrophotometer and the morphologies were observed by scanning electron microscopy. It was found that mc-Si surface by Ag/Cu-assisted etching is smoother than that by Ag or Cu-assisted etching and the reflectance of the former is lower. A complex structure with pores and grooves was obtained when Ag/Cu molar ratio is smaller than 1/10 and dense nanowire structure was obtained when Ag/Cu molar ratio is larger than 1/5. The results showed that the complex structure with pores and grooves possessed a good light trapping effect. A minimum surface reflectance of 6.23% in the wavelength range from 400 to 900 nm was obtained when Ag/Cu molar ratio was 1/10 and etching time was 180 s. © 2017, Chongqing Functional Materials Periodical Press Co. Ltd. All right reserved.


Luo J.-W.,Phono Solar Technology Co. | Pu T.,Phono Solar Technology Co. | Pu T.,Nanjing University of Aeronautics and Astronautics | Wu J.,Phono Solar Technology Co. | And 3 more authors.
Rengong Jingti Xuebao/Journal of Synthetic Crystals | Year: 2016

To reduce the effect of black silicon surface defect on black silicon solar cell performance, two methods of cleaning the 156 mm×156 mm muti-crystaline black silicon prepared by metal nano particles assisted etching are studied. The SC1 cleaning method in traditional RCA process for semiconductor industry and an optimized method are used to clean the black silicon. The black silicon microstructure or the electrical properties of its photovoltaic device were characterized by SEM, minority carrier life time, I~V and QE. The results show that, comparing with the SC1 method, the optimized cleaning method is more effective to removing the metal residue in the black silicon and modifying the surface microstructure of the black silicon, and increase the minority carrier lifetime from 1.98 μs to 3.09 μs. The optimized method have a 62 mA increase on short circuit current as well as a 0.16% increase on average conversion efficiency for the 156 mm×156 mm muti-crystaline black silicon solar cells with 18.01% average conversion efficiency. © 2016, Chinese Ceramic Society. All right reserved.


Zheng C.-F.,Nanjing University of Aeronautics and Astronautics | Shen H.-L.,Nanjing University of Aeronautics and Astronautics | Pu T.,Nanjing University of Aeronautics and Astronautics | Pu T.,Phono Solar Technology Co. | And 5 more authors.
Guangzi Xuebao/Acta Photonica Sinica | Year: 2017

Using by the method of one step Ag and Cu dual elements based Metal Assisted Chemical Etching(MACE), a nano-light trapping structure was prepared at a room temperature on the surface of the multicrystalline silicon. Then, the silicon wafers were made an anisotropic refactoring using by a Nano Structure Rebuilding (NSR) solution at a temperature of 50℃, so that the invert pyramid light trapping structures with different sizes were prepared. The reflectance and surface morphologies of multicrystalline silicon, and the minority carrier lifetime of the passivated multicrystalline silicon were measured by spectrophotometer, scanning electron microscopy and Sinton WCT-120 tool respectively. The results show that, the main factor to affect the final size of invert pyramid structure is the depth of the as-etched nanostructure. The deeper the depth is, the larger the final size of invert pyramid structure becomes. With the increase of NSR refactoring time, the size of the invert pyramid structure goes larger and the reflectance becomes higher too. While the minority carrier lifetime increases with the increasing of the size of invert pyramids after atomic layer deposition passivating, one should make a balance between anti-reflection result and passivation effect. An invert pyramid with an edge length of 600 nm is found to be an optimal size, corresponding a reflectance of 9.87% and a minority carrier lifetime of 37.82 μs. © 2017, Science Press. All right reserved.


Kong F.,Phono Solar Technology Co. | Duan Y.,Phono Solar Technology Co. | Yan R.,Yangzhong Tongling Electrical Equipment Factory of Shang Kun Group
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2012

The constitutes and mechanism of series resistance of crystal Si modules were analysed, and its value of theoretical calculation was compared with testing value. The results showed that value of theoretical calculation is quite closed to testing value. This paper pointed out that the series resistance of crystal Si modules decreased along with increasing the efficiency of solar cell and improving consistency of I-V curve of solar cell. In this paper, the way for reducing the series resistance of crystal Si modules was forecasted and new module configuration was designed.


Jiang Y.,Nanjing University of Aeronautics and Astronautics | Shen H.,Nanjing University of Aeronautics and Astronautics | Pu T.,Nanjing University of Aeronautics and Astronautics | Pu T.,Phono Solar Technology Co. | And 6 more authors.
Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics | Year: 2015

The black silicon is fabricated by the metal assited chemical etching method. The rounding effect of the ultra low concentration of NaOH solution on the structure of black silicon is studied, as well as on the performance of the black silicon solar cell. Scanning electron microscope(SEM) and quantum efficiency(QE) tester are used to analyze the structure of black silicon and the performance of black silicon solar cell. The results show that the ultra low concentration of NaOH solution can remove the edges and cusps of black silicon with the widened nanostructure in order to reduce the surface recombination. It is also found that with the NaOH treatment, the nanostructure turns out to be smooth and uniform. The average reflectance of black silicon solar cell is 4.15% in the wavelength range of 400-900 nm. And the average efficiency of black silicon solar cells achieves 17.94%, which is relatively 0.35% higher than that of silicon solar cells fabricated by the traditional acid textured method. © 2015, Editorial Department of Journal of NUAA. All right reserved.


Yue Z.,Nanjing University of Aeronautics and Astronautics | Shen H.,Nanjing University of Aeronautics and Astronautics | Jiang Y.,Nanjing University of Aeronautics and Astronautics | Chen W.,Nanjing University of Aeronautics and Astronautics | And 7 more authors.
Applied Physics A: Materials Science and Processing | Year: 2014

In this paper, large area multi-crystalline silicon (mc-Si) solar cells of 156 mm × 156 mm were fabricated by the combination of Ag-assisted etching and sodium hydroxide (NaOH) treatment. Scanning electron microscope, UV-Vis-NIR spectrophotometer, external quantum efficiency measurement system, and current-voltage test were used to characterize the etched black silicon wafers and the fabricated solar cells. It was found that, though the black mc-Si without NaOH treatment showed a lowest reflectance of 2.03 % in the wavelength of 400-900 nm, the maximum conversion efficiency came from the mc-Si solar cells produced by combination of Ag-assisted etching and NaOH treatment. Though the solar cell with additional NaOH treatment for 30 s presented a reflectance of 5.45 %, it presented the highest conversion efficiency of 18.03 %, which is 0.64 % higher than the traditional mc-Si solar cell (17.39 %) and much higher than that of the black mc-Si solar cell without NaOH treatment (16.24 %). © 2014 Springer-Verlag Berlin Heidelberg.


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Phono Solar Technology Co. | Date: 2013-08-22

Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; Battery boxes; Commutators; Electric accumulators; Electric control panels; Electrical distribution boxes; Electricity distribution consoles; Industrial automation controls; Inverters; Photovoltaic cells also including a solar thermal collector sold as a unit.

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