Stark Effect Spectroscopy of Mono- and Few-Layer MoS2

J. Klein; J. Wierzbowski; A. Regler; J. Becker; F. Heimbach; K. Müller; M. Kaniber; J. J. Finley

doi:10.1021/acs.nanolett.5b03954

Stark Effect Spectroscopy of Mono- and Few-Layer MoS₂

J. Klein
, J. Wierzbowski
, A. Regler
, J. Becker
, F. Heimbach
, K. Müller
, M. Kaniber
, J. J. Finley

Walter Schottky Institut
Technische Universität München
E. L. Ginzton Laboratory, Stanford University

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

93 Zitate (Scopus)

Abstract

We demonstrate electrical control of the A-exciton interband transition in mono- and few-layer MoS₂ 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 ∼16 meV from which we extract the mean DC exciton polarizability <β¯_N> = (0.58 ± 0.25) × 10^-8 Dm V^-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.

Originalsprache	Englisch
Seiten (von - bis)	1554-1559
Seitenumfang	6
Fachzeitschrift	Nano Letters
Jahrgang	16
Ausgabenummer	3
DOIs	https://doi.org/10.1021/acs.nanolett.5b03954
Publikationsstatus	Veröffentlicht - 9 März 2016

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title = "Stark Effect Spectroscopy of Mono- and Few-Layer MoS2",

abstract = "We demonstrate electrical control of the A-exciton interband transition in mono- and few-layer MoS2 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 ∼16 meV from which we extract the mean DC exciton polarizability <β¯N> = (0.58 ± 0.25) × 10-8 Dm V-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, electrical control, exciton polarizability, molybdenum disulfide, quantum confined Stark effect, transition metal dichalcogenides",

author = "J. Klein and J. Wierzbowski and A. Regler and J. Becker and F. Heimbach and K. M{\"u}ller and M. Kaniber and Finley, \{J. J.\}",

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T1 - Stark Effect Spectroscopy of Mono- and Few-Layer MoS2

AU - Klein, J.

AU - Wierzbowski, J.

AU - Regler, A.

AU - Becker, J.

AU - Heimbach, F.

AU - Müller, K.

AU - Kaniber, M.

AU - Finley, J. J.

PY - 2016/3/9

Y1 - 2016/3/9

N2 - We demonstrate electrical control of the A-exciton interband transition in mono- and few-layer MoS2 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 ∼16 meV from which we extract the mean DC exciton polarizability <β¯N> = (0.58 ± 0.25) × 10-8 Dm V-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.

AB - We demonstrate electrical control of the A-exciton interband transition in mono- and few-layer MoS2 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 ∼16 meV from which we extract the mean DC exciton polarizability <β¯N> = (0.58 ± 0.25) × 10-8 Dm V-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.

KW - 2D materials

KW - electrical control

KW - exciton polarizability

KW - molybdenum disulfide

KW - quantum confined Stark effect

KW - transition metal dichalcogenides

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U2 - 10.1021/acs.nanolett.5b03954

DO - 10.1021/acs.nanolett.5b03954

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