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Cited by 644

The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Dielectric Screening of Excitons and Trions in Single-Layer MoS2

Lin, Yuxuan, Ling, Xi, Yu, Lili, Huang, Shengxi, Hsu, Allen L., Lee, Yi-Hsien, Kong, Jing, Dresselhaus, Mildred S., Palacios, Tomás·2014·Nano Letters

Abstract

Photoluminescence (PL) properties of single-layer MoS2 are indicated to have strong correlations with the surrounding dielectric environment. Blue shifts of up to 40 meV of exciton or trion PL peaks were observed as a function of the dielectric constant of the environment. These results can be explained by the dielectric screening effect of the Coulomb potential; based on this, a scaling relationship was developed with the extracted electronic band gap and exciton and trion binding energies in good agreement with theoretical estimations. It was also observed that the trion/exciton intensity ratio can be tuned by at least 1 order of magnitude with different dielectric environments. Our findings are helpful to better understand the tightly bound exciton properties in strongly quantum-confined systems and provide a simple approach to the selective and separate generation of excitons or trions with potential applications in excitonic interconnects and valleytronics.

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Metadata

Authors
Lin, Y., Ling, X., Yu, L., Huang, S., Hsu, A. L., Lee, Y.-H., Kong, J., Dresselhaus, M. S., & Palacios, T.
Venue
Nano Letters
Published
2014-09-19
Volume
14
Issue
10
Pages
5569-5576
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2331292532
Cited by
644
References
4
FWCI
20.40
Type
journal article
Language
en
Open access
closed

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