Design of Ag nanograting for broadband absorption enhancement in amorphous silicon thin film solar cells |
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| Affiliation: | 1. School of Electric and Information Engineering, Zhongyuan University of Technology, Zhengzhou 450007, PR China;2. Key Lab of Material Physics, Department of Physics, Zhengzhou University, Zhengzhou 450052, PR China;1. National Institute for Research and Development in Electrochemistry and Condensed Matter, Condensed Matter Department, P. Andronescu no. 1, Timisoara 300254, Romania;2. West University of Timisoara, Vasile Parvan 4, 300223 Timisoara, Romania;3. Institute of Chemistry Timisoara of Romanian Academy, Bvd. Mihai Viteazul no. 24, 300223, Romania;1. Basic Science Department, High Institute of Engineering and Technology, El-Arish, North Sinai, Egypt;2. Department of Physics, Faculty of Science at New Damietta, Damietta University, 34517 New Damietta, Egypt;3. Solid State Electronics Laboratory, Solid State Physics Department, Physics Division, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt;1. Department of Physics, Arab-American University, Jenin, West Bank, Palestine;2. Group of Physics, Faculty of Engineering, Atilim University, 06836 Ankara, Turkey;3. Physics Department, Sciences Faculty for Girls, King Abdulaziz University, Jeddah, Saudi Arabia;4. Department of Physics, Middle East Technical University, 06800 Ankara, Turkey;5. Virtual International Scientific Research Centre, Baku State University, 1148 Baku, Azerbaijan;1. Department of Physics, University of Boumerdes, Boumerdes 35000, Algeria;2. Department of Physics, University of Constantine 1, Constantine 25000, Algeria;3. Department of Physics, Larbi Ben M’Hidi University, University of Oum El Bouaghi, Oum El Bouaghi 04000, Algeria |
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| Abstract: | Light trapping is one of the key issues to improve the light absorption and increase the efficiency of thin film solar cells. The effects of the triangular Ag nanograting on the absorption of amorphous silicon solar cells were investigated by a numerical simulation based on the finite element method. The light absorption under different angle and area of the grating has been calculated. Furthermore, the light absorption with different incident angle has been calculated. The optimization results show that the absorption of the solar cell with triangular Ag nanograting structure and anti-reflection film is enhanced up to 96% under AM1.5 illumination in the 300–800 nm wavelength range compared with the reference cell. The physical mechanisms of absorption enhancement in different wavelength range have been discussed. Furthermore, the solar cell with the Ag nanograting is much less sensitive to the angle of incident light. These results are promising for the design of amorphous silicon thin film solar cells with enhanced performance. |
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| Keywords: | Amorphous silicon solar cell Light-trapping Ag nanograting COMSOL |
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