Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity
2021; American Association for the Advancement of Science; Volume: 371; Issue: 6536 Linguagem: Inglês
10.1126/science.abf7652
ISSN1095-9203
AutoresWei 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,
Tópico(s)Magnetic and transport properties of perovskites and related materials
ResumoPerovskite synthesis out in the open Although methods have been developed that create the photoactive black perovskite phase of formamidinium lead iodide (α-FAPbI 3 ), 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-FAPbI 3 , 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
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