LAPSE:2023.34680
Published Article
LAPSE:2023.34680
Comparison of LID and Electrical Injection Regeneration of PERC and Al-BSF Solar Cells from a Cz-Si Ingot
Siqi Ding, Chen Yang, Cheng Qin, Bin Ai, Xiaopu Sun, Jianghai Yang, Quan Liu, Xueqin Liang
April 27, 2023
In order to study the effect of device structures and silicon wafer positions on light-induced degradation (LID) and regeneration, five groups of industrial PERC and Al-BSF solar cells were fabricated by using silicon wafers from different positions of a B-doped Czochralski silicon (Cz-Si) ingot. Then, the cells were subjected to a dark annealing (200 °C, 30 min), the first LID (45 °C, 1 sun, 12 h), an electrical injection regeneration (175 °C, 18 A, 30 min) and the second LID (45 °C, 1 sun, 12 h) in order, and the variations of performance of the cells with processing time were measured. It was found that after the electrical injection regeneration, the efficiency losses of PERC cells decreased from 1.28−1.76solute in the first LID to 0.09−0.16solute in the second LID, while those of Al-BSF cells decreased from 0.3−0.66solute in the first LID to 0 in the second LID. The efficiency losses of PERC cells during the first LID were caused by the co-action of B-O-defect-induced LID (BO-LID) and dissociation of Fe-B pairs, and the latter contributed 5.81−9.56% of the efficiency loss, while those of Al-BSF cells during the first LID were almost contributed by BO-LID solely. For both kinds of cells, the cells made from the silicon wafers from middle of the ingot had the best performance throughout the experiment. In addition, the LID and regeneration treatments only affected the spectral response of the cells in the wavelength larger than 700 nm.
Keywords
boron–oxygen defects, Czochralski silicon, iron–boron pairs, light-induced degradation (LID), passivated emitter and rear cell (PERC), regeneration, solar cell
Subject
Suggested Citation
Ding S, Yang C, Qin C, Ai B, Sun X, Yang J, Liu Q, Liang X. Comparison of LID and Electrical Injection Regeneration of PERC and Al-BSF Solar Cells from a Cz-Si Ingot. (2023). LAPSE:2023.34680
Author Affiliations
Ding S: School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
Yang C: School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
Qin C: School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
Ai B: School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Photovoltaic Technologies, Sun Yat-sen University, Guangzhou 510006, China [ORCID]
Sun X: CSG PVTECH Co., Ltd., Dongguan 523141, China
Yang J: CSG PVTECH Co., Ltd., Dongguan 523141, China
Liu Q: CSG PVTECH Co., Ltd., Dongguan 523141, China
Liang X: Yichang CSG Polysilicon Co., Ltd., Yichang 443007, China
Journal Name
Energies
Volume
15
Issue
20
First Page
7764
Year
2022
Publication Date
2022-10-20
Published Version
ISSN
1996-1073
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PII: en15207764, Publication Type: Journal Article
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LAPSE:2023.34680
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doi:10.3390/en15207764
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