Magneto-spectroscopy of exciton Rydberg states in a CVD grown WSe2 monolayer

被引：20
作者：
Delhomme, A. [1 ]
Butseraen, G. [2 ]
Zheng, B. [3 ]
Marty, L. [2 ]
Bouchiat, V. [2 ]
Molas, M. R. [4 ]
Pan, A. [3 ]
Watanabe, K. [5 ]
Taniguchi, T. [5 ]
Ouerghi, A. [6 ]
Renard, J. [2 ]
Faugeras, C. [1 ]
机构：
[1] UPS, UJF, CNRS, LNCMI,INSA, BP 166, F-38042 Grenoble 9, France
[2] Univ Grenoble Alpes, CNRS, Grenoble INP, Inst Neel, F-38000 Grenoble, France
[3] Hunan Univ, Coll Mat Sci & Engn, State Key Lab Chemo Biosensing & Chemometr, Key Lab Micronano Phys & Technol Hunan Prov, Changsha 410082, Hunan, Peoples R China
[4] Univ Warsaw, Inst Expt Phys, Fac Phys, Ul Pasteura 5, PL-02093 Warsaw, Poland
[5] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan
[6] Univ Paris Saclay, Univ Paris Sud, CNRS, Ctr Nanosci & Nanotechnol,C2N Marcoussis, F-91460 Marcoussis, France
来源：
APPLIED PHYSICS LETTERS | 2019年 / 114卷 / 23期
基金：
中国国家自然科学基金;
关键词：
MOS2; SEMICONDUCTOR; EMITTERS;
D O I：
10.1063/1.5095573
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The results of magneto-optical spectroscopy investigations of excitons in a CVD grown monolayer of WSe2 encapsulated in hexagonal boron nitride are presented. The emission linewidth for the 1s state is of 4.7meV, close to the narrowest emissions observed in monolayers exfoliated from bulk material. The 2s excitonic state is also observed at higher energies in the photoluminescence spectrum. Magneto-optical spectroscopy allows for the determination of the g-factors and of the spatial extent of the excitonic wave functions associated with these emissions. Our work establishes CVD grown monolayers of transition metal dichalcogenides as a mature technology for optoelectronic applications.
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页数：5
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