期刊
NANO LETTERS
卷 13, 期 12, 页码 5944-5948出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl403036h
关键词
Molybdenum disulfide; 2D semiconductors; photoluminescence; excitons; transition metal dichalcogenide; chemical doping
类别
资金
- MEXT of Japan [22740195, 25400324, 24681031, 23340085, 25610074]
- PRESTO from JST
- Grants-in-Aid for Scientific Research [24681031, 22740195, 25610074, 23340085] Funding Source: KAKEN
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.
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