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. 2016 Mar 16;28(11):2253-8.
doi: 10.1002/adma.201505002. Epub 2016 Jan 20.

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

Qifeng Han  1   2   3 , Sang-Hoon Bae  1   2 , Pengyu Sun  1 , Yao-Tsung Hsieh  1   2 , Yang Michael Yang  1 , You Seung Rim  1 , Hongxiang Zhao  1   2 , Qi Chen  1   2 , Wangzhou Shi  3 , Gang Li  1 , Yang Yang  1   2
Affiliations

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

Qifeng Han et al. Adv Mater. .

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.

Keywords: FAPbI3; perovskite; photoconductivity; photodetectors; single crystals.

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