Asymmetric heterojunctions between size different 2D flakes intensify the ionic diode behaviour

He Ma; Xiaoheng Jin; Yun-Zhe Du; Ling-Yu Dong; Xu Hu; Wen-Cui Li; Dongqi Wang; Rakesh Joshi; Guang-Ping Hao; An-Hui Lu

doi:10.1039/D2CC01488B

Asymmetric heterojunctions between size different 2D flakes intensify the ionic diode behaviour†

He Ma,^a Xiaoheng Jin,^b Yun-Zhe Du,^a Ling-Yu Dong,^a Xu Hu,^a Wen-Cui Li,

^a Dongqi Wang,^a Rakesh Joshi,

^b Guang-Ping Hao

*^a and An-Hui Lu

^a

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* Corresponding authors

^a State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
E-mail: guangpinghao@dlut.edu.cn

^b School of Material Science and Engineering, University of New South Wales, Gate 2 High St Kensington, NSW 2052, Australia

Abstract

Here we report on the facile formation of asymmetric heterojunctions between laterally size different 2D flakes, which leads to a prominent gradient in charge distribution at the nanocontact interface and triggers ionic diode-like transport behaviour with a rectification ratio of 110.

Chemical Communications

Asymmetric heterojunctions between size different 2D flakes intensify the ionic diode behaviour†

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Asymmetric heterojunctions between size different 2D flakes intensify the ionic diode behaviour

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