局部纳米级阶段杂质是化矿中的降解点
Stuart Macpherson1, Tiarnan A S Doherty1,2, Andrew J Winchester3
1Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.
Nature
|May 24, 2022
概括
矿太阳能电池中的纳米级杂质捕获电荷和种子降解,减少设备的寿命. 优化这些相的局部化学和结构可以减轻性能损失并提高稳定性.
科学领域:
- 材料科学
- 能源科学
- 太阳能发电
背景情况:
- 化矿太阳能电池具有高功率转换效率,但运行不稳定.
- 了解纳米级降解机制对于提高设备寿命至关重要.
研究的目的:
- 研究纳米级阶段杂质在富含甲的矿吸收剂降解中的作用.
- 为分析这些变化开发多式显微镜工具包.
主要方法:
- 开发一个多式显微镜工具包.
- 纳米级阶段杂质的照明诱导结构变化的可视化.
- 纳米景观与设备性能和稳定性的相关性.
主要成果:
- 纳米级阶段杂质 (六角型,化物) 作为载体陷和光化学降解点.
- 这些杂质的微量,未被批量测量检测到,显著损害了设备的寿命.
- 薄膜的组成和加工影响杂质的类型和分布,其中多种类型特别有害.
结论:
- 通过调整局部结构和化学性质来调节有缺陷的阶段杂质,可以减轻性能损失和降解.
- 开发的多模式工作流适用于各种光束敏感半导体,以评估性能和稳定性.
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