Stark Effect Spectroscopy of Mono- and Few-Layer MoS sub(2)

We demonstrate electrical control of the A-exciton interband transition in mono- and few-layer MoS sub(2) crystals embedded into photocapacitor devices via the DC Stark effect. Electric field-dependent low-temperature photoluminescence spectroscopy reveals a significant tuneability of the A-exciton...

Full description

Saved in:
Bibliographic Details
Published inNano letters Vol. 16; no. 3; pp. 1554 - 1559
Main Authors Klein, J, Wierzbowski, J, Regler, A, Becker, J, Heimbach, F, Mueller, K, Kaniber, M, Finley, J J
Format Journal Article
LanguageEnglish
Published 09.03.2016
Subjects
Direct current
Excitation
Excitation spectra
Molybdenum disulfide
Spectroscopy
Stark effect
Transition metals
Wave functions
Online AccessGet full text

Cover

More Information
Summary:We demonstrate electrical control of the A-exciton interband transition in mono- and few-layer MoS sub(2) crystals embedded into photocapacitor devices via the DC Stark effect. Electric field-dependent low-temperature photoluminescence spectroscopy reveals a significant tuneability of the A-exciton transition energy up to similar to 16 meV from which we extract the mean DC exciton polarizability beta sub()N = (0.58 plus or minus 0.25) 10 super(-8) Dm V super(-1). The exciton polarizability is shown to be layer-independent, indicating a strong localization of both electron and hole wave functions in each individual layer. Keywords: 2D materials; transition metal dichalcogenides; molybdenum disulfide; quantum confined Stark effect; electrical control; exciton polarizability
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
content type line 23
ObjectType-Feature-2
ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.5b03954