导向矿膜中的重定向驱动的降解:将面向工程转向热力学稳定性
Xiaojing Ci1, Xiongzhuo Jiang1, Guangjiu Pan1
1TUM School of Natural Sciences, Department of Physics, Chair For Functional Materials, Technical University of Munich, Garching, Germany.
Small (Weinheim an der Bergstrasse, Germany)
|January 17, 2026
概括
高度定向的矿太阳能电池显示热稳定性下降. 抑制不稳定性需要工程热力学平衡,而不是最大限度地调整稳定的矿光伏的晶体结构.
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.
背景情况:
- 混合矿太阳能电池 (PSC) 的稳定性对于商业化至关重要.
- 在PSC,特别是窄带间隔设备中的晶体定向和热稳定性之间的联系仍然未被充分探索.
研究的目的:
- 调查晶体学定向对混合锡- PeroVskite太阳能电池的热稳定性的影响.
- 了解高度定向的矿膜中热应力诱导的降解机制.
主要方法:
- 使用无添加剂的两步方法制造高度定向的-混合矿膜.
- 在120°C加速衰老的研究.
- 操作牧场发生广角X射线散射 (GIWAXS) 以监测在热应力下结构演变.
主要成果:
- 高度定向的矿薄膜与较少定向的薄膜相比,具有矛盾地较低的热稳定性.
- 来自高定向电影的PSC保留了73%的初始PCE,而老化后的低定向电影则保持了89%.
- 热应力诱导了重定位,格子扭曲和微电流积聚在定向晶体中,加速了降解.
结论:
- 转化稳定性是矿薄膜中高结晶学秩序的内在结果.
- 最大限度地提高结晶学对齐的策略可能会无意中增加热力学脆弱性.
- 对于稳定的PSC,未来的晶体工程应该优先考虑热力学平衡,而不是最大化对齐.
相关概念视频
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