Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity

doi:10.1126/science.abf7652

GSTDTAP > 气候变化

DOI	10.1126/science.abf7652
	Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity
	Wei Hui; Lingfeng Chao; Hui Lu; Fei Xia; Qi Wei; Zhenhuang Su; Tingting Niu; Lei Tao; Bin Du; Deli Li; Yue Wang; He Dong; Shouwei Zuo; Bixin Li; Wei Shi; Xueqin Ran; Ping Li; Hui Zhang; Zhongbin Wu; Chenxin Ran; Lin Song; Guichuan Xing; Xingyu Gao; Jing Zhang; Yingdong Xia; Yonghua Chen; Wei Huang
	2021-03-26
发表期刊	Science
出版年	2021
英文摘要	Although methods have been developed that create the photoactive black perovskite phase of formamidinium lead iodide (α-FAPbI3), these routes are temperature and humidity sensitive and less compatible with large-scale solar cell production. Hui et al. report an alternative route in which vertically aligned lead iodide thin films are grown from the ionic liquid methylamine formate. Nanoscale channels in the films lower the barrier to permeation of formamidinium iodide and enable transformation to α-FAPbI3, even at high humidity and room temperature. Solar cells made with these films have power conversion efficiencies as high as 24.1% that display high stability. Science , this issue p. [1359][1] The stabilization of black-phase formamidinium lead iodide (α-FAPbI3) perovskite under various environmental conditions is considered necessary for solar cells. However, challenges remain regarding the temperature sensitivity of α-FAPbI3 and the requirements for strict humidity control in its processing. Here we report the synthesis of stable α-FAPbI3, regardless of humidity and temperature, based on a vertically aligned lead iodide thin film grown from an ionic liquid, methylamine formate. The vertically grown structure has numerous nanometer-scale ion channels that facilitate the permeation of formamidinium iodide into the lead iodide thin films for fast and robust transformation to α-FAPbI3. A solar cell with a power-conversion efficiency of 24.1% was achieved. The unencapsulated cells retain 80 and 90% of their initial efficiencies for 500 hours at 85°C and continuous light stress, respectively. [1]: /lookup/doi/10.1126/science.abf7652
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/321099
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Wei Hui,Lingfeng Chao,Hui Lu,et al. Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity[J]. Science,2021.
APA	Wei Hui.,Lingfeng Chao.,Hui Lu.,Fei Xia.,Qi Wei.,...&Wei Huang.(2021).Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity.Science.
MLA	Wei Hui,et al."Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity".Science (2021).