Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method

doi:10.1088/1674-1056/ad0cd0

中国物理B ›› 2024, Vol. 33 ›› Issue (1): 18801-18801.doi: 10.1088/1674-1056/ad0cd0

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

收稿日期:2023-09-25 修回日期:2023-10-25 接受日期:2023-11-16 出版日期:2023-12-13 发布日期:2023-12-13
通讯作者: Yan Wang, Yaoping Liu, Xiaolong Du E-mail:wangyan1987@hrl.ac.cn;ypliu@iphy.ac.cn;xldu@iphy.ac.cn
基金资助:
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).

Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method

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

Received:2023-09-25 Revised:2023-10-25 Accepted:2023-11-16 Online:2023-12-13 Published:2023-12-13
Contact: Yan Wang, Yaoping Liu, Xiaolong Du E-mail:wangyan1987@hrl.ac.cn;ypliu@iphy.ac.cn;xldu@iphy.ac.cn
Supported by:
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).

1. 2024-018801-SI.pdf(481KB)

摘要/Abstract

摘要： 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.

关键词: V-groove, alkaline etching, quasi omnidirectionality, silicon solar cell

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.

Key words: V-groove, alkaline etching, quasi omnidirectionality, silicon solar cell

中图分类号: (Efficiency and performance of solar cells)

88.40.hj

88.40.H- (Solar cells (photovoltaics)) 84.60.Rb (Thermoelectric, electrogasdynamic and other direct energy conversion)

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[J]. 中国物理B, 2024, 33(1): 18801-18801.

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Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method

Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method

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