Tunable photoluminescence of monolayer MoS₂ via chemical doping.
basic_science · Level V
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- Record sourced from PubMed, PMID 24215567.
- Also identified by DOI 10.1021/nl403036h.
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Abstract
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.
Medical subject headings
- Disulfides
- Molybdenum
- Nanostructures