表面化物倒置减轻宽带间隙矿中的电压损失,以实现高效的并排
Yunfei Li1, Nannan Sun1, Xingxing Jiang2,3
1School of Physics and Electronic Science Engineering Research Center of Nano-photonics and Advanced Instrument Ministry of Education, East China Normal University, Shanghai, 200062, China.
Angewandte Chemie (International ed. in English)
|November 17, 2025
概括
研究人员在宽带间隙矿上发现了一种富含的表面,导致能量损失. 使用化 (CsF) 逆转这种表面为丰富,可以显著提高全矿联太阳能电池 (APTSC) 的效率.
科学领域:
- 材料科学 材料科学 材料科学
- 太阳能光伏发电是如何实现的
- 可再生能源可再生能源是可再生能源.
背景情况:
- 宽带间隙 (WBG) 矿与富勒的接口会导致显著的能量损失,限制全矿并联太阳能电池 (APTSC) 的效率.
- 虽然已知表面缺陷会导致非辐射重组,但由于矿的内在表面特性,仍然存在关键界面电压损失.
研究的目的:
- 确定WBG矿/富勒烯系统中界面能量损失的根本原因.
- 调查减轻非辐射重组和加强在WBG矿界面上的准费米水平分裂 (QFLS) 的策略.
- 提高WBG矿太阳能电池和APTSC的效率和稳定性.
主要方法:
- 计算模拟来分析表面化物组成 (含丰富或含丰富) 对带隙 (Eg) 和再组合的影响.
- 使用功能性剂进行表面抛光,补偿和化物逆转策略的系统实验比较.
- WBG矿太阳能电池和APTSC的制造和表征,包括效率,开放电路电压 (VOC) 和运行稳定性 (T90) 的测量.
主要成果:
- WBG矿表面本质上富含,导致局部缩小带隙 (Eg) 和增加非辐射重组.
- 模拟表明,富含的表面更适合对齐的能量水平和减少重组.
- 化 (CsF) 处理有效地逆转了表面的含量,显著减少了重组并增加了QFLS.
- Cs/F替代增强了晶格稳定性,改善了矿材料的相位稳定性.
结论:
- WBG矿表面的丰富性质是关键的,以前未被确定的界面能量损失来源.
- 通过CsF处理将表面反转为富含是一种高度有效的策略,用于增强QFLS并减少电压损失.
- 这种方法导致WBG矿太阳能电池的冠军效率为20.89%,令人印象深刻的APTSC效率为29.15%,具有1000小时的运行稳定性.
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