Chemical Vapor Deposition Grown Large-Scale Atomically Thin Platinum Diselenide with Semimetal-Semiconductor Transition

Jianping Shi; Yahuan Huan; Min Hong; Runzhang Xu; Pengfei Yang; Zhepeng Zhang; Xiaolong Zou; Yanfeng Zhang

doi:10.1021/acsnano.9b04312

Chemical Vapor Deposition Grown Large-Scale Atomically Thin Platinum Diselenide with Semimetal-Semiconductor Transition

ACS Nano. 2019 Jul 23;13(7):8442-8451. doi: 10.1021/acsnano.9b04312. Epub 2019 Jun 26.

Authors

Jianping Shi^{1

2

3

4}, Yahuan Huan^{1

2}, Min Hong^{1

2}, Runzhang Xu⁵, Pengfei Yang^{1

2}, Zhepeng Zhang^{1

2}, Xiaolong Zou⁵, Yanfeng Zhang^{1

2}

Affiliations

¹ Department of Materials Science and Engineering, College of Engineering , Peking University , Beijing 100871 , China.
² Center for Nanochemistry (CNC), College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China.
³ International Center for Quantum Materials, School of Physics , Peking University , Beijing 100871 , China.
⁴ Collaborative Innovation Center of Quantum Matter , Peking University , Beijing 100871 , China.
⁵ Shenzhen Geim Graphene Center (SGC), Tsinghua-Berkeley Shenzhen Institute (TBSI) , Tsinghua University , Shenzhen , Guangdong 518055 , China.

PMID: 31241317
DOI: 10.1021/acsnano.9b04312

Abstract

Among two-dimensional (2D) transition-metal dichalcogenides (TMDCs), platinum diselenide (PtSe₂) stands in a distinct place due to its fancy transition from type-II Dirac semimetal to semiconductor with a thickness variation from bulk to monolayer (1 ML) and the related versatile applications especially in mid-infrared detectors. However, achieving atomically thin PtSe₂ is still a challenging issue. Herein, we have designed a facile chemical vapor deposition (CVD) method to achieve the synthesis of atomically thin 1T-PtSe₂ on an electrode material of Au foil. Thanks to the high crystalline quality, we have confirmed the complete transition from semimetal to semiconductor from trilayer (3 ML) to 1 ML 1T-PtSe₂. More importantly, we have found that such atomically thin 1T-PtSe₂ can serve as perfect electrocatalysts, featured with a record high hydrogen evolution reaction (HER) efficiency (comparable to traditional Pt catalyst). Our work is helpful toward the large-scale synthesis, exotic physical property exploration, and intriguing application development of atomically thin TMDCs.

Keywords: chemical vapor deposition; hydrogen evolution reaction; platinum diselenide; scanning tunneling microscopy/spectroscopy; semimetal−semiconductor transition.