20.0% Efficiency Si Nano/Microstructures Based Solar Cells with Excellent Broadband Spectral Response |
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| Authors: | Zengguang Huang Xiaomin Song Sihua Zhong Haiyuan Xu Wenxing Luo Xudong Zhu Wenzhong Shen |
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| Affiliation: | 1. Laboratory of Condensed Matter Spectroscopy and Opto‐Electronic Physics, and Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics and Astronomy, and Institute of Solar Energy, Shanghai Jiao Tong University, Shanghai, P. R. China;2. School of Science, Huaihai Institute of Technology, Lianyungang, P. R. China;3. Nice Sun PV Co., Ltd, Jiangsu Province, Wuxi, P. R. China;4. Collaborative Innovation Center of Advanced Microstructures, Nanjing, P. R. China |
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| Abstract: | Spectral response of solar cells determines the output performance of the devices. In this work, a 20.0% efficient silicon (Si) nano/microstructures (N/M‐Strus) based solar cell with a standard solar wafer size of 156 × 156 mm2 (pseudo‐square) has been successfully fabricated, by employing the simultaneous stack SiO2/SiNx passivation for the front N/M‐Strus based n+‐emitter and the rear surface. The key to success lies in the excellent broadband spectral responses combining the improved short‐wavelength response of the stack SiO2/SiNx passivated Si N/M‐Strus based n+‐emitter with the extraordinary long‐wavelength response of the stack SiO2/SiNx passivated rear reflector. Benefiting from the broadband spectral response, the highest open‐circuit voltage (Voc) and short‐circuit current density (Jsc) reach up to 0.653 V and 39.0 mA cm?2, respectively. This high‐performance screen‐printed Si N/M‐Strus based solar cell has shown a very promising way to the commercial mass production of the Si based high‐efficient solar cells. |
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| Keywords: | high efficient large area Si Nano/Microstructures stack passivation solar cell |
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