Single Crystal Formamidinium Lead Iodide (FAPbI3): Insight into the Structural, Optical, and Electrical Properties.

Han, Qifeng; Bae, Sang-Hoon; Sun, Pengyu; Hsieh, Yao-Tsung; Yang, Yang Michael; Rim, You Seung; Zhao, Hongxiang; Chen, Qi et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

5 mm-scale large FAPbI 3 single crystals and corresponding photoconductive properties are shown. The phase transition of FAPbI3 between the α-phase and δ-phase is studied. The carrier mobility is 4.4 cm(2) V(-1) s(-1) with a lifetime of 484 ns in the bulk of the single crystal. Finally, photodetectors based on single-crystal FAPbI3 are demonstrated.