3D矿上的二维相位形成:从分子度的洞察力
Lucas Scalon1, Charles Alves Nogueira2, André Felipe Vale Fonseca1
1Institute of Chemistry, University of Campinas (UNICAMP), 13083-970 Campinas, São Paulo, Brazil.
ACS applied materials & interfaces
|September 13, 2024
概括
2D矿阶段在3D矿薄膜的粒度边界上形成,受有机阴离子特性的影响. 这提高了矿太阳能电池的效率和稳定性.
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.
- 纳米技术 纳米技术
背景情况:
- 低维 (2D) 结构可以提高矿太阳能电池 (PSC) 的效率和稳定性.
- 了解3D矿膜上的2D相的形成对于优化PSC至关重要.
研究的目的:
- 在3D矿膜上识别二维阶段的形成地点.
- 与2D/3D矿的形成和结晶相关联有机阴离子特性 (分子刚性,固体阻碍).
- 为了研究2D/3D矿异面接口对太阳能电池性能的影响.
主要方法:
- 阴极光发射 (CL) 与扫描电子显微镜 (SEM) 结合,以定位二维相位形成.
- 在现场放牧事件广角X射线散射 (GIWAXS) 监测2D/3D矿的形成和结晶.
- 2D/3D矿异界面太阳能电池的制造和表征.
主要成果:
- 二维矿阶段最好形成在三维矿的粒度边界上.
- 2D阶段的形成和结晶取决于有机离子体的固体阻碍和分子度.
- 采用2D/3D矿异质接口的太阳能电池实现了最大功率转换效率21.5%,特别是使用柔性.
结论:
- 2D阶段的粒度边界形成解释了3D矿膜中的被动化机制.
- 有机阴离子设计,特别是刚性和硬质障碍,是控制二维矿形成和结晶的关键.
- 通过阴离子工程量身定制2D/3D矿接口为高效矿太阳能电池提供了一个有前途的途径.
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