揭示NiOx/矿接口:矿太阳能电池中的电荷传输和设备性能
Hanseul Lee1,2, Hye Ri Jung1, Sooyeon Pak3,4
1Advanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea.
ACS applied materials & interfaces
|September 6, 2025
概括
氧化物 (NiOx) 的制造方法显著影响矿太阳能电池的性能. 纳米粒子前体NiOx通过最大限度地减少接口电荷耗尽,提高了孔挖掘和设备效率.
科学领域:
- 材料科学
- 固态物理
- 可再生能源
背景情况:
- 氧化 (NiOx) 是矿太阳能电池中孔传输层 (HTL) 的一个关键的p型半导体.
- 了解制造方法对NiOx接口属性的影响对于优化PSC性能至关重要.
- 接口空间电荷效应对异构连接器件的电荷动态有重大影响.
研究的目的:
- 研究纳米粒子前体 (NP) 和喷沉积 (SP) 制造方法对NiOx界面特性的影响.
- 阐明介面空间电荷效应在NiOx/矿系统中的作用.
- 将制造过程中产生的界面特性与电荷传输和设备的整体性能联系起来.
主要方法:
- 对NP NiOx和SP NiOx薄膜进行比较分析.
- 3+/2+的比率和导电性的特征.
- 使用电化学技术研究界面带曲和孔耗尽.
- 包含不同NiOxHTL的矿太阳能电池的性能评估.
主要成果:
- SP NiOx显示出更高的Ni3+/Ni2+比率和导电性,但引起了显著的孔径耗尽和带曲.
- NP NiOx显示较弱的孔耗尽和可以忽略的孔屏障,增强孔提取.
- 在NP NiOx中存在的碳配体减轻了界面重组,从而提高了设备的效率.
- 与SP NiOx设备相比,基于NP NiOx的PSC实现了更高的开路电压和整体效率.
结论:
- 制造方法批判性地确定了PSC中的NiOx HTL的界面特性.
- 尽量减少界面孔耗尽和重组是提高PSC性能的关键.
- 由于其有利的界面特性,NP NiOx为矿太阳能电池的高效HTL设计提供了有希望的途径.
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