SnO2/矿与混合化物盐的接口工程:通过结合实验密度功能理论方法实现高效和稳定的矿太阳能电池的途径
Ibrahim Muhammad Adam1, Kay Thi Soe1, Waranchit Ruengsrisang2
1Nanoscience and Nanotechnology Graduate Program, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand.
ACS applied materials & interfaces
|May 14, 2025
概括
化盐通过消除缺陷,有效地使矿太阳能电池中的锡氧化物表面被动化. 这提高了设备的效率和稳定性,为太阳能技术的发展提供了一个有前途的战略.
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.
- 纳米技术纳米技术
背景情况:
- 氧化 (SnO) 是矿太阳能电池 (PSC) 中的一个关键电子输送层.
- 在SnO2/矿接口的表面缺陷,如氧空隙和基团,妨碍了设备的性能和稳定性.
- 化化盐在异质界面的原子级被动化机制尚未完全理解.
研究的目的:
- 研究化盐 (KI,KCl,KI+KCl) 对SNO2/MAPbI3接口的被动化作用.
- 阐明负责PSC效率和稳定性改进的原子层机制.
- 展示一种提高矿太阳能电池性能和寿命的策略.
主要方法:
- 用化盐处理的SnO2/MAPbI3接口的实验性表征.
- 密度函数理论 (DFT) 计算来分析缺陷被动化和界面相互作用.
- 使用经过处理的SnO2层制造的矿太阳能电池的制造和性能测试.
主要成果:
- 离子和离子通过KOH形成促进氧空位和基团的去除,减少基键强度和改善界面排序.
- 化盐处理导致更光滑的接口,更大的矿颗粒,增强的粘附性和改进的电荷提取.
- 经KI和KI+KCl处理的设备实现了分别为19.86%和19.15%的功率转换效率 (PCE),混合盐处理显示出优异的长期稳定性 (>96%PCE1000小时后).
结论:
- 化盐通过解决表面缺陷和加强接口键,有效地使SnO2/perovskite接口被动化.
- 该研究揭示了涉及K+和化物离子在缺陷清除和接口稳定中的原子级机制.
- 化后处理是一个可行的策略,可以显著提高矿太阳能电池的效率和运行稳定性.
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