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在矿太阳能电池中模拟室外离子迁移:一种前进的偏见,无光加速衰老方法
Ulas Erdil1,2, Mark Khenkin1, Marko Remec1,3
1Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
ACS energy letters
|March 20, 2025
概括
新的矿太阳能电池 (PSC) 衰老测试使用前置偏差和黑暗休息来模拟没有光线的户外降解. 这种方法揭示了离子迁移效应,改善了光伏技术的稳定性评估.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
- 太阳能光伏发电是如何实现的
背景情况:
- 矿太阳能电池 (PSC) 对光伏市场有很大的前景.
- 运行稳定性和加速老化测试对于PSC商业化至关重要.
- 目前的老化测试主要使用照明作为压力因素.
研究的目的:
- 为PSC开发一种新的加速老化程序,模仿户外操作动态.
- 调查离子迁移在前向偏差和随后的暗存下对PSC性能的影响.
- 为了将实验室老化结果与现实世界户外性能数据相关联.
主要方法:
- 一个加速衰老的协议,涉及长时间的前向偏差在黑暗中,随后是一个黑暗的存储 (后偏差休息) 阶段.
- 在衰老过程中分析离子迁移,电荷传输,缺陷演变和重组动态.
- 将老化结果与德国柏林PSC的20个月户外运营数据进行比较.
主要成果:
- 前向偏差诱导了离子迁移,阻碍了电荷传输并导致缺陷生长,在偏差后的休息阶段部分恢复.
- 偏差后的休息阶段导致了由于离子再分配而增加的重组.
- 超过20个月的户外PSC性能动态反映了观察到的老化阶段,高辐射/温度与前偏差相关,低辐射/温度与后偏差相关.
结论:
- 一种基于黑暗的新型加速衰老方法有效模拟了PSC中离子迁移诱导的降解.
- 这种程序准确地模仿了户外操作降解模式,而不需要照明.
- 这些发现使矿太阳能电池的稳定性评估更加相关和有效.
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