在高效的抗硫化太阳能电池中,用于最大限度地减少电压损失的场效应被动化
Anwen Gong1, Cong Liu2, Jiexi Yang1
1Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, China.
Nature communications
|January 6, 2026
概括
使用Ta2O5的新场效应被动化策略显著改善了硫化太阳能电池. 这种方法减少了重组,将功率转换效率提高到创纪录的10.95%,并最大限度地减少了电压损失.
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.
- 半导体物理 半导体物理
背景情况:
- 反硫化 (Sb2(S,Se) 3) 太阳能电池由于异质连接质量差和接口重组,因此具有低功率转换效率 (PCE).
- 在缓冲器/吸收器接口上观察到显著的开放电路电压 (VOC) 损失,阻碍了设备的性能.
研究的目的:
- 开发一个场效应被动化策略,以提高Sb2(S,Se) 3太阳能电池的性能.
- 为了减轻接口重组和减少开放电路电压 (VOC) 损失.
主要方法:
- 在CdS和Sb2(S,Se) 3层之间引入低功能的氧化 (Ta2O5) 介电层.
- 使用Ta2O5作为生长高度结晶Sb2(S,Se) 3膜的基板.
- 利用Ta2O5中的正定电荷来增强内置电场和电荷传输.
主要成果:
- 实现了Sb2(S,Se) 3太阳能电池的10.95% (10.65%认证) 的创纪录功率转换效率 (PCE).
- 获得了695mV的高开放电路电压 (VOC),表明电压缺陷明显减少.
- 通过增强的电子提取和减少孔积累,证明了非辐射重组概率的抑制.
结论:
- Ta2O5被动化策略有效地优化了接口质量,并减轻了Sb2(S,Se) 3光伏中的VOC损失.
- 这种方法为高性能太阳能电池开发建立了通用物理被动化范式.
- 这些发现为推进基于Sb2(S,Se) 3的太阳能电池技术铺平了道路.
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