The Effect of Thermal Annealing on Charge Transport in Organolead Halide Perovskite Microplate Field-Effect Transistors

Dehui Li; Hung-Chieh Cheng; Yiliu Wang; Zipeng Zhao; Gongming Wang; Hao Wu; Qiyuan He; Yu Huang; Xiangfeng Duan

doi:10.1002/adma.201601959

The Effect of Thermal Annealing on Charge Transport in Organolead Halide Perovskite Microplate Field-Effect Transistors

Adv Mater. 2017 Jan;29(4). doi: 10.1002/adma.201601959. Epub 2016 Nov 16.

Authors

Dehui Li¹, Hung-Chieh Cheng², Yiliu Wang¹, Zipeng Zhao², Gongming Wang³, Hao Wu², Qiyuan He¹, Yu Huang⁴, Xiangfeng Duan³

Affiliations

¹ Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA.
² Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095, USA.
³ Department of Chemistry and Biochemistry and California Nanosystems Institute, University of California, Los Angeles, CA, 90095, USA.
⁴ Department of Materials Science and Engineering and California Nanosystems Institute, University of California, Los Angeles, CA, 90095, USA.

PMID: 27859707
DOI: 10.1002/adma.201601959

Abstract

Transformation of unipolar n-type semiconductor behavior to ambipolar and finally to unipolar p-type behavior in CH₃ NH₃ PbI₃ microplate field-effect transistors by thermal annealing is reported. The photoluminescence spectra essentially maintain the same features before and after the thermal annealing process, demonstrating that the charge transport measurement provides a sensitive way to probe low-concentration defects in perovskite materials.

Keywords: graphene contact; perovskite microplate transistors; thermal annealing.