Tunable Photoluminescence of Monolayer MoS2 via Chemical Doping

被引：1333

作者：

Mouri, Shinichiro ^{[1
]}

Miyauchi, Yuhei ^{[1
,2
]}

Matsuda, Kazunari ^{[1
]}

机构：

[1] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

NANO LETTERS | 2013年 / 13卷 / 12期

关键词：

Molybdenum disulfide; 2D semiconductors; photoluminescence; excitons; transition metal dichalcogenide; chemical doping; VALLEY POLARIZATION; LAYER; SEMICONDUCTORS; TRIONS; WS2;

D O I：

10.1021/nl403036h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate the tunability of the photoluminescence (PL) properties of monolayer (1L)-MoS2 via chemical doping. The PL intensity of 1L-MoS2 was drastically enhanced by the adsorption of p-type dopants with high electron affinity but reduced by the adsorption of n-type dopants. This PL modulation results from switching between exciton PL and trion PL depending on carrier density in 1L-MoS2. Achievement of the extraction and injection of carriers in 1L-MoS2 by this solution-based chemical doping method enables convenient control of optical and electrical properties of atomically thin MoS2.

引用

页码：5944 / 5948

页数：5

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