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Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method |
| Xingqian Chen(陈兴谦)1,2,3, Yan Wang(王燕)1,2,4,†, Wei Chen(陈伟)2, Yaoping Liu(刘尧平)1,2,‡, Guoguang Xing(邢国光)1,2,3, Bowen Feng(冯博文)1,2,3, Haozhen Li(李昊臻)1,2,3, Zongheng Sun(孙纵横)1,2,3, and Xiaolong Du(杜小龙)1,2,§ |
1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 Songshan Lake Materials Laboratory, Dongguan 523808, China;
3 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
4 Beijing Hairou Laboratory, Beijing 101400, China |
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Abstract Silicon passivated emitter and rear contact (PERC) solar cells with V-groove texture were fabricated using maskless alkaline solution etching with in-house developed additive. Compared with the traditional pyramid texture, the V-groove texture possesses superior effective minority carrier lifetime, enhanced p—n junction quality and better applied filling factor (FF). In addition, a V-groove texture can greatly reduce the shading area and edge damage of front Ag electrodes when the V-groove direction is parallel to the gridline electrodes. Due to these factors, the V-groove solar cells have a higher efficiency (21.78%) than pyramid solar cells (21.62%). Interestingly, external quantum efficiency (EQE) and reflectance of the V-groove solar cells exhibit a slight decrease when the incident light angle (θ) is increased from 0^o to 75^o, which confirms the excellent quasi omnidirectionality of the V-groove solar cells. The proposed V-groove solar cell design shows a 2.84% relative enhancement of energy output over traditional pyramid solar cells.
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Received: 25 September 2023
Revised: 25 October 2023
Accepted manuscript online: 16 November 2023
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PACS:
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88.40.hj
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(Efficiency and performance of solar cells)
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88.40.H-
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(Solar cells (photovoltaics))
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84.60.Rb
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(Thermoelectric, electrogasdynamic and other direct energy conversion)
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| Fund: Project supported by the Key-Area Research and Development Program of Guangdong Province, China (Grant No. 2021B0101260001), Guangdong Basic and Applied Basic Research Foundation (Grant No. 2019A1515110411), the National Natural Science Foundation of China (Grant No. 61904201). |
Corresponding Authors:
Yan Wang, Yaoping Liu, Xiaolong Du
E-mail: wangyan1987@hrl.ac.cn;ypliu@iphy.ac.cn;xldu@iphy.ac.cn
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Cite this article:
Xingqian Chen(陈兴谦), Yan Wang(王燕), Wei Chen(陈伟), Yaoping Liu(刘尧平), Guoguang Xing(邢国光), Bowen Feng(冯博文), Haozhen Li(李昊臻), Zongheng Sun(孙纵横), and Xiaolong Du(杜小龙) Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method 2024 Chin. Phys. B 33 018801
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