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Publication date: August 2021

Source: Nano Energy, Volume 86

Author(s): Wei Song, Yuxiu Liu, Billy Fanady, Yufang Han, Lin Xie, Zhenyu Chen, Kuibao Yu, Xin Peng, Xiaoli Zhang, Ziyi Ge

Publication date: August 2021

Source: Nano Energy, Volume 86

Author(s): Asif Abdullah Khan, Guangguang Huang, Md Masud Rana, Nanqin Mei, Margherita Biondi, Shazzad Rassel, Nicolas Tanguy, Bin Sun, Zoya Leonenko, Ning Yan, Chunlei Wang, Shuhong Xu, Dayan Ban

Publication date: 16 June 2021

Source: Joule, Volume 5, Issue 6

Author(s): Rui Sun, Wei Wang, Han Yu, Zeng Chen, XinXin Xia, Hao Shen, Jing Guo, Mumin Shi, Yina Zheng, Yao Wu, Wenyan Yang, Tao Wang, Qiang Wu, Yang (Michael) Yang, Xinhui Lu, Jianlong Xia, Christoph J. Brabec, He Yan, Yongfang Li, Jie Min

A universal solution-processed bottom-up quasi-epitaxial growth of highly oriented α-FAPbI₃ perovskite film is achieved through the synergetic effect of methylammonium chloride and a large-organic cation. In situ GIWAXS visualizes the BA-related intermediate phase formation at the bottom, which serves as a guiding template for the bottom-up quasi-epitaxial growth in the subsequent annealing process.

Abstract

Epitaxial growth gives the highest-quality crystalline semiconductor thin films for optoelectronic devices. Here, a universal solution-processed bottom-up quasi-epitaxial growth of highly oriented α-formamidinium lead triiodide (α-FAPbI₃) perovskite film via a two-step method is reported, in which the crystal orientation of α-FAPbI₃ film is precisely controlled through the synergetic effect of methylammonium chloride and the large-organic cation butylammonium bromide. In situ GIWAXS visualizes the BA-related intermediate phase formation at the bottom of film, which serves as a guiding template for the bottom-up quasi-epitaxial growth in the subsequent annealing process. The template-guided epitaxially grown BAFAMA perovskite film exhibits increased crystallinity, preferred crystallographic orientation, and reduced defects. Moreover, the BAFAMA perovskite solar cells demonstrate decent stability, maintaining 95% of their initial power conversion efficiency after 2600 h ambient storage, and 4-time operation condition lifetime enhancement.

Publication date: 19 May 2021

Source: Joule, Volume 5, Issue 5

Author(s): Wenyan Yang, Wei Wang, Yuheng Wang, Rui Sun, Jie Guo, Hongneng Li, Mumin Shi, Jing Guo, Yao Wu, Tao Wang, Guanghao Lu, Christoph J. Brabec, Yongfang Li, Jie Min

Nature Communications, Published online: 20 April 2021; doi:10.1038/s41467-021-22473-w

Nature Communications, Published online: 14 April 2021; doi:10.1038/s41467-021-22358-y

In article number 2008091, Mingzhu Li, Wei E. I. Sha, Yanlin Song, and co‐workers design and fabricate colorful efficient perovskite solar cells (PSCs) incorporating moiré interference structures by imprinting with a commercial DVD disc. The light‐harvesting is boosted by elongation of the optical path and “folding” sunlight into the perovskite layer through changing the rotation angle. The moiré‐PSC with an optimized 30° rotation angle achieves an efficiency over 21.76%.