Green and efficient exfoliation of ReS2 and its photoelectric response based on electrophoretic deposited photoelectrodes

Xiang Xu; Yaohui Guo; Qiyi Zhao; Keyu Si; Yixuan Zhou; Jingyao Ma; Jintao Bai; Xinlong Xu

Materials & Design (Dec 2018)

Green and efficient exfoliation of ReS2 and its photoelectric response based on electrophoretic deposited photoelectrodes

Xiang Xu,
Yaohui Guo,
Qiyi Zhao,
Keyu Si,
Yixuan Zhou,
Jingyao Ma,
Jintao Bai,
Xinlong Xu

Affiliations

Xiang Xu: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China
Yaohui Guo: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China
Qiyi Zhao: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China
Keyu Si: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China
Yixuan Zhou: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China
Jingyao Ma: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China
Jintao Bai: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China; Corresponding author.
Xinlong Xu: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China; Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of Electronic Technology, Guilin 541004, China; Correspondence to: Shaanxi Joint Lab of Graphene, State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China.

Journal volume & issue: Vol. 159
pp. 11 – 19

Abstract

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Environmentally friendly synthesis and scalable photoelectrode fabrication are important for the photoelectric conversion in photocurrent generation. We find that 28% ethanol in 72% deionized water are the best mixed solvent for efficient exfoliation of layered ReS2 by absorption spectra and the enthalpy of mixing theory. Electrophoretic deposition method is used to fabricate photoelectrodes with different thicknesses by controlling the deposition time. These photoelectrodes demonstrate fast and stable photoelectric response and enhanced photocurrent with the thickness of the nanosheet films controlled by the deposition time. We also discuss the photoelectric mechanism as well as the influence of the effective mass of the monolayer, two-layer, and bulk ReS2 via Vienna ab initio Simulation Package (VASP). This work paves the way for the solvent selection in exfoliation of ReS2 nanosheets as well as the scalable fabrications for the photodetectors, photoelectrodes, and other solar energy conversion devices. Keywords: Mixed-solvent, ReS2, Electrophoretic deposition, Photoelectric response, First-principle calculations

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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