揭示化物混合对矿稳定性的影响
Jeremy Hieulle1, Xiaoming Wang2, Collin Stecker1
1Energy Materials and Surface Sciences Unit (EMSSU) , Okinawa Institute of Science and Technology Graduate University (OIST) , 1919-1 Tancha , Onna-son , Okinawa 904-0495 , Japan.
Journal of the American Chemical Society
|January 17, 2019
概括
化物混合增强太阳能电池的矿稳定性. 特别是的加入,通过影响阳离子分布,为商业光伏应用提供了卓越的稳定性.
科学领域:
- 材料科学
- 固态化学
- 太阳能发电
背景情况:
- 矿太阳能电池需要增强的稳定性才能实现商业可行性.
- 化物混合是一种提高矿材料稳定的关键策略.
- 在混合矿中化物离子的精确分布是有争议的,但对性能至关重要.
研究的目的:
- 确定混合化矿网格中的精确离子 (和) 位置.
- 将化物分布与增强的材料稳定性相关联.
- 在不影响带间隙的情况下,确定最佳的结合.
主要方法:
- 联合扫描道显微镜 (STM) 和密度函数理论 (DFT) 用于离子定位.
- 混合化矿的电子特性和稳定性的分析.
- 在半细胞装置架构上进行光电子光谱检测以验证稳定性.
主要成果:
- 精确确定和离子在CH3NH3PbBr3-yIy和CH3NH3PbBr3-zClz矿中的位置.
- 与相比,的加入显著提高了矿的稳定性.
- 确定了最佳的比,以提高稳定性,而不会造成不利的带隙变化.
结论:
- 解决了关于化物离子分布及其对矿稳定性的争论.
- 加入是制造稳定的矿光伏设备的一个有前途的策略.
- 这些发现为设计下一代耐用的矿太阳能电池提供了关键的见解.
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