Crystalline Liquid-like Behavior: Surface-Induced Secondary Grain Growth of Photovoltaic Perovskite Thin Film

• Published in: Journal of the American Chemical Society Vol. 141; no. 35; pp. 13948 - 13953
• Main Authors: Xue, Jingjing, Wang, Rui, Wang, Kai-Li, Wang, Zhao-Kui, Yavuz, Ilhan, Wang, Yang, Yang, Yingguo, Gao, Xingyu, Huang, Tianyi, Nuryyeva, Selbi, Lee, Jin-Wook, Duan, Yu, Liao, Liang-Sheng, Kaner, Richard, Yang, Yang
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 04.09.2019
• Subjects: lead; nanomaterials; photovoltaic cells; temperature

Surface effects usually become negligible on the micrometer or sub-micrometer scale due to lower surface-to-bulk ratio compared to nanomaterials. In lead halide perovskites, however, their “soft” nature renders them highly responsive to the external field, allowing for extended depth scale affected...