Direct Observation of Charge Injection of Graphene in the Graphene/WSe2 Heterostructure by Optical-Pump Terahertz-Probe Spectroscopy.

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成果类型：

期刊论文

作者：

Zhang, Liangliang*;Chen, Zefeng;Zhang, Rui;Tan, Yong;Wu, Tong;...

通讯作者：

Zhang, Liangliang;Xu, Jianbin

作者机构：

[Shalaby, Mostafa; Tan, Yong; Zhang, Liangliang; Wu, Tong] Capital Normal Univ, Beijing Adv Innovat Ctr Imaging Theory & Technol, Beijing 100048, Peoples R China.

[Shalaby, Mostafa; Tan, Yong; Zhang, Liangliang; Wu, Tong] Capital Normal Univ, Dept Phys, Key Lab Terahertz Optoelect MoE, Beijing 100048, Peoples R China.

[Xu, Jianbin; Chen, Zefeng] Chinese Univ Hong Kong, Dept Elect Engn, Hong Kong 999077, Peoples R China.

[Zhang, Rui] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Guangdong, Peoples R China.

[Xie, Rui] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

通讯机构：

[Zhang, Liangliang; Xu, Jianbin] C

Capital Normal Univ, Beijing Adv Innovat Ctr Imaging Theory & Technol, Beijing 100048, Peoples R China.

Capital Normal Univ, Dept Phys, Key Lab Terahertz Optoelect MoE, Beijing 100048, Peoples R China.

Chinese Univ Hong Kong, Dept Elect Engn, Hong Kong 999077, Peoples R China.

语种：

英文

关键词：

charge injection;graphene;optical-pump THz probe;photoresponse;van der Waals heterostructure

期刊：

ACS Applied Materials & Interfaces

ISSN：

1944-8244

年：

2019

卷：

期：

页码：

47501-47506

DOI：

10.1021/acsami.9b13996

基金类别：

Beijing Natural Science FoundationBeijing Natural Science Foundation [JQ18015]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [61905271]; CUHK Group Research Scheme; CUHK Postdoctoral Fellowship, RGC [AoE/P-02/12, 14204616, 14203018, N_CUHK438/18]; Beijing Advanced Innovation Center for Imaging Theory and Technology

机构署名：

本校为其他机构

院系归属：

化学化工学院

摘要：

Charge transfer across the interface and interlayer coupling in the graphene van der Waals heterostructure, which is constructed by graphene and semiconducting transition metal dichalcogenides (TMDCs), is critical for their electronic and optoelectronic applications. Photo-induced charge injection from TMDC to graphene has been studied in several heterostructure photodetectors. However, the response time significantly varies among different reports, ranging from microseconds to milliseconds. In this work, using a graphene/WSe2 heterostructure a...

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Direct Observation of Charge Injection of Graphene in the Graphene/WSe2 Heterostructure by Optical-Pump Terahertz-Probe Spectroscopy.

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