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Title: Manipulating charge and energy transfer between 2D atomic layers via heterostructure engineering
Authors: Liu, Xue
Pei, Jiajie
Hu, Zehua
Zhao, Weijie
Liu, Sheng
Amara, Mohamed-Raouf
Watanabe, Kenji
Taniguchi, Takashi
Zhang, Han
Xiong, Qihua
Keywords: Science::Physics
Issue Date: 2020
Source: Liu, X., Pei, J., Hu, Z., Zhao, W., Liu, S., Amara, M.-R., ... Xiong, Q. (2020). Manipulating charge and energy transfer between 2D atomic layers via heterostructure engineering. Nano Letters, 20(7), 5359–5366. doi:10.1021/acs.nanolett.0c01722
Journal: Nano Letters 
Abstract: Two-dimensional (2D) van der Waals heterostructures have attracted enormous research interests due to their emergent electrical and optical properties. The comprehensive understanding and efficient control of interlayer couplings in such devices are crucial for realizing their functionalities, as well as for improving their performance. Here, we report a successful manipulation of interlayer charge transfer between 2D materials by varying different stacking layers consisting of graphene, hexagonal boron nitride, and tungsten disulfide. Under visible-light excitation, despite being separated by few-layer boron nitride, the graphene and tungsten disulfide exhibit clear modulation of their doping level, i.e., a change of the Fermi level in graphene as large as 120 meV and a net electron accumulation in WS2. By using a combination of micro-Raman and photoluminescence spectroscopy, we demonstrate that the modulation is originated from simultaneous manipulation of charge and/or energy transfer between each of the two adjacent layers.
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.0c01722
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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