Layered ultrathin PbI2 single crystals for high sensitivity flexible photodetectors

Jiye Zhang; Tao Song; Zhaojun Zhang; Kai Ding; Feng Huang; Baoquan Sun

doi:10.1039/C4TC02712D

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Layered ultrathin PbI₂ single crystals for high sensitivity flexible photodetectors†

Jiye Zhang,^a Tao Song,^b Zhaojun Zhang,^a Kai Ding,^a Feng Huang ‡*^a and Baoquan Sun*^b

Author affiliations

* Corresponding authors

^a Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
E-mail: fhuang@fjirsm.ac.cn

^b Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, P. R. China
E-mail: bqsun@suda.edu.cn

Abstract

A facile and novel method has been developed to prepare ultrathin PbI₂ single crystals with good mechanical flexibility and bendability for high sensitivity photodetectors. The prototype lateral metal–semiconductor–metal photodetector based on the as-prepared crystal exhibits a responsivity of up to 11.3 A W⁻¹, a photogain of 31.84, and a high-speed photoresponse with a time constant of 354 μs.

This article is part of the themed collection: 2015 Journal of Materials Chemistry C Hot Papers

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Article information

DOI: https://doi.org/10.1039/C4TC02712D
Article type: Paper
Submitted: 27 Nov 2014
Accepted: 22 Mar 2015
First published: 24 Mar 2015

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J. Mater. Chem. C, 2015,3, 4402-4406

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Layered ultrathin PbI₂ single crystals for high sensitivity flexible photodetectors

J. Zhang, T. Song, Z. Zhang, K. Ding, F. Huang and B. Sun, J. Mater. Chem. C, 2015, 3, 4402 DOI: 10.1039/C4TC02712D

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Journal of Materials Chemistry C