Tunable Photoluminescence of Monolayer MoS₂ Via Chemical Doping

Overview

Journal Nano Lett

Publisher American Chemical Society

Specialty Biotechnology

Date 2013 Nov 13

PMID 24215567

Citations 143

Authors

Shinichiro Mouri

Yuhei Miyauchi

Kazunari Matsuda

Affiliations

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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.

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