Electronic-dimensionality reduction of bulk MoS2 by hydrogen treatment

被引：6

作者：

Cho, Soohyun ^{[1
,2
]}

Kim, Beom Seo ^{[2
,3
]}

Kim, Beomyoung ^{[4
]}

Kyung, Wonshik ^{[2
,3
,4
]}

Seo, Jeongjin ^{[1
,2
]}

Park, Min ^{[5
]}

Jeon, Jun Woo ^{[6
,7
]}

Tanaka, Kiyohisa ^{[8
,9
]}

Denlinger, Jonathan D. ^{[4
]}

Kim, Changyoung ^{[2
,3
]}

Odkhuu, Dorj ^{[6
]}

Kim, Byung Hoon ^{[6
,7
]}

Park, Seung Ryong ^{[6
]}

机构：

[1] Yonsei Univ, Inst Phys & Appl Phys, Seoul 03722, South Korea

[2] Inst for Basic Sci Korea, Ctr Correlated Electron Syst, Seoul 408826, South Korea

[3] Seoul Natl Univ, Dept Phys & Astron, Seoul 08826, South Korea

[4] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[5] Korea Inst Sci & Technol, Inst Adv Composite Mat, Joellabuk Do 55324, South Korea

[6] Incheon Natl Univ, Dept Phys, Incheon 22012, South Korea

[7] Incheon Natl Univ, Res Inst Basic Sci, Incheon 22012, South Korea

[8] Inst Mol Sci, UVSOR Facil, Okazaki, Aichi 4448585, Japan

[9] Grad Univ Adv Studies, Okazaki, Aichi 4448585, Japan

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2018年 / 20卷 / 35期

基金：

新加坡国家研究基金会;

关键词：

CHEMICAL-VAPOR-DEPOSITION; LARGE-AREA; VALLEY POLARIZATION; MONOLAYER; PHOTOLUMINESCENCE; DEFECTS; LASERS; LAYERS; FILMS; WSE2;

D O I：

10.1039/c8cp02365d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A reduction in the electronic-dimensionality of materials is one method for achieving improvements in material properties. Here, a reduction in electronic-dimensionality is demonstrated using a simple hydrogen treatment technique. Quantum well states from hydrogen-treated bulk 2H-MoS2 are observed using angle resolved photoemission spectroscopy (ARPES). The electronic states are confined within a few MoS2 layers after the hydrogen treatment. A significant reduction in the band-gap can also be achieved after the hydrogen treatment, and both phenomena can be explained by the formation of sulfur vacancies generated by the chemical reaction between sulfur and hydrogen.

引用

页码：23007 / 23012

页数：6

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