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

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

doi:10.1002/adma.201505002

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

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

Authors

Qifeng Han^{1

2

3}, Sang-Hoon Bae^{1

2}, Pengyu Sun¹, Yao-Tsung Hsieh^{1

2}, Yang Michael Yang¹, You Seung Rim¹, Hongxiang Zhao^{1

2}, Qi Chen^{1

2}, Wangzhou Shi³, Gang Li¹, Yang Yang^{1

2}

Affiliations

¹ Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, CA, 90095, USA.
² California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, 90095, USA.
³ Department of Physics, Shanghai Normal University, Shanghai, 200234, China.

PMID: 26790006
DOI: 10.1002/adma.201505002

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.