结晶
锡
钙钛矿(结构)
材料科学
吡啶
化学工程
氧化剂
无机化学
化学
有机化学
冶金
工程类
作者
Giuseppe Nasti,Mahmoud H. Aldamasy,Marion A. Flatken,Pellegrino Musto,Piotr Matczak,André Dallmann,Armin Hoell,Artem Musiienko,Hannes Hempel,Ece Aktas,Diego Di Girolamo,Jorge Pascual,Guixiang Li,Meng Li,Lucia V. Mercaldo,Paola Delli Veneri,Antonio Abate
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2022-09-01
卷期号:7 (10): 3197-3203
被引量:44
标识
DOI:10.1021/acsenergylett.2c01749
摘要
Controlling the crystallization of perovskite in a thin film is essential in making solar cells. Processing tin-based perovskite films from solution is challenging because of the uncontrollable faster crystallization of tin than the most used lead perovskite. The best performing devices are prepared by depositing perovskite from dimethyl sulfoxide because it slows down the assembly of the tin-iodine network that forms perovskite. However, while dimethyl sulfoxide seems the best solution to control the crystallization, it oxidizes tin during processing. This work demonstrates that 4-(tert-butyl) pyridine can replace dimethyl sulfoxide to control the crystallization without oxidizing tin. We show that tin perovskite films deposited from pyridine have a 1 order of magnitude lower defect density, which promotes charge mobility and photovoltaic performance.
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