Radiation degradation mechanisms of GaInP/GaAs heterojunction solar cells following proton, electron and sequential irradiation

IF 7.9 2区工程技术 Q2 ENERGY & FUELS

Solar Energy Pub Date : 2026-03-15 Epub Date: 2026-01-16 DOI:10.1016/j.solener.2026.114333

Kelun Zhao , Jiaming Zhou , Qiang Kang , Yanqing Zhang , Yang Liu , Xinyi Li , Chaoming Liu , Tianqi Wang , Zhongyu Li , Mingxue Huo

{"title":"Radiation degradation mechanisms of GaInP/GaAs heterojunction solar cells following proton, electron and sequential irradiation","authors":"Kelun Zhao , Jiaming Zhou , Qiang Kang , Yanqing Zhang , Yang Liu , Xinyi Li , Chaoming Liu , Tianqi Wang , Zhongyu Li , Mingxue Huo","doi":"10.1016/j.solener.2026.114333","DOIUrl":null,"url":null,"abstract":"<div><div>This study focused on the damage disparity and coupling effects of 2 MeV protons and 1 MeV electrons in irradiated GaInP/GaAs HJT solar cells. It was found that the Voc, Jsc and EQE curve exhibited similar degradation levels at proton and electron fluences of 5 × 1011 cm−2 and 8 × 1014 cm−2, respectively. An equivalency factor of Rep = 1.55 was determined for the GaInP/GaAs HJT cell, resulting from the far greater displacement damage effectiveness of 2 MeV protons compared to 1 MeV electrons. DIV analysis showed that both Jdiff and Jrec increased linearly with fluence, with Jrec being the dominant component. Defect analysis revealed that 2 MeV protons uniquely introduced the H2 (Ev + 0.32 eV) defect. Despite these differences in specific defects, their overall impact on the SRH recombination lifetime was similar when compared at an equivalent displacement damage dose. Sequential irradiation experiments confirmed that the coupled damage did not introduce new defects but resulted in a linear superposition of the defects induced by individual irradiations, indicating no significant synergistic effect.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"307 ","pages":"Article 114333"},"PeriodicalIF":7.9000,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solar Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038092X26000216","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/1/16 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

This study focused on the damage disparity and coupling effects of 2 MeV protons and 1 MeV electrons in irradiated GaInP/GaAs HJT solar cells. It was found that the V_oc, J_sc and EQE curve exhibited similar degradation levels at proton and electron fluences of 5 × 10¹¹ cm⁻² and 8 × 10¹⁴ cm⁻², respectively. An equivalency factor of R_ep = 1.55 was determined for the GaInP/GaAs HJT cell, resulting from the far greater displacement damage effectiveness of 2 MeV protons compared to 1 MeV electrons. DIV analysis showed that both J_diff and J_rec increased linearly with fluence, with J_rec being the dominant component. Defect analysis revealed that 2 MeV protons uniquely introduced the H₂ (E_v + 0.32 eV) defect. Despite these differences in specific defects, their overall impact on the SRH recombination lifetime was similar when compared at an equivalent displacement damage dose. Sequential irradiation experiments confirmed that the coupled damage did not introduce new defects but resulted in a linear superposition of the defects induced by individual irradiations, indicating no significant synergistic effect.

查看原文本刊更多论文

质子、电子和序次辐照下GaInP/GaAs异质结太阳能电池的辐射降解机理

本文研究了2 MeV质子和1 MeV电子在辐照的GaInP/GaAs HJT太阳能电池中的损伤视差和耦合效应。结果发现，在5 × 1011 cm−2和8 × 1014 cm−2的质子和电子影响下，Voc、Jsc和EQE曲线分别表现出相似的降解水平。对于GaInP/GaAs HJT电池，等效系数为Rep = 1.55，这是由于2 MeV质子比1 MeV电子具有更大的位移损伤效能。DIV分析表明，Jdiff和Jrec均随通量线性增加，Jrec为优势成分。缺陷分析表明，2 MeV质子唯一引入了H2 （Ev + 0.32 Ev）缺陷。尽管在特定缺陷方面存在这些差异，但在等效位移损伤剂量下，它们对SRH重组寿命的总体影响是相似的。连续辐照实验证实，耦合损伤没有引入新的缺陷，而是导致单个辐照引起的缺陷线性叠加，没有显著的协同效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Solar Energy 工程技术-能源与燃料

CiteScore

13.90

自引率

9.00%

发文量

审稿时长

47 days

期刊介绍： Solar Energy welcomes manuscripts presenting information not previously published in journals on any aspect of solar energy research, development, application, measurement or policy. The term "solar energy" in this context includes the indirect uses such as wind energy and biomass