按需形成易斯基,用于高效和稳定的矿太阳能电池
Sheng Fu1, Nannan Sun2, Hao Chen3
1Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, University of Toledo, Toledo, OH, USA. sheng.fu2@utoledo.edu.
Nature nanotechnology
|April 17, 2025
概括
研究人员为矿太阳能电池开发了一种按需的易斯基战略. 这种方法增强了所需α相的形成,提高了基于FAPbI3的设备的效率和稳定性.
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.
- 太阳能光伏发电是如何实现的
背景情况:
- 易斯基对于FAPbI3矿太阳能电池制造至关重要,影响光伏α相形成.
- 一个关键的挑战是平衡易斯基结合亲和力:强结合稳定了中间的d-阶段,而弱结合是必要的阶段过渡和谷物生长.
研究的目的:
- 解决易斯基在矿太阳能电池制造过程中的作用的内在矛盾.
- 引入一个按需的易斯基生成和去除策略,以优化矿结晶.
主要方法:
- 利用含有易斯酸的有机盐作为合成添加剂,这些添加剂去质子,以在现场形成易斯基.
- 能够精确控制易斯基的存在,并通过重质子化将其快速移除回盐.
- 研究了对FAPbI3矿膜结晶,阴离子分布,粒度和接口特性的影响.
主要成果:
- 实现了α相FAPbI3矿膜的最佳结晶,具有均的A位点离子分布,较大的粒度和较小的空隙.
- 使用半碳化添加剂的矿太阳能电池达到26.1%的效率 (25.33%经过认证).
- 证明了卓越的操作稳定性 (在85°C下1000小时后96%的保留率) 和21.47%的模块效率.
结论:
- 按需的易斯基战略有效地克服了传统易斯基添加剂在矿太阳能电池中的局限性.
- 这种方法提供了一种通用方法来提高基于FAPbI3的矿太阳能电池和模块的性能和稳定性.
- 该策略广泛适用于具有低酸解离常数的有机盐,为下一代太阳能技术铺平了道路.
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