Rights statement: This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/
Final published version, 919 KB, PDF document
Available under license: CC BY
Rights statement: arXiv preprint
Submitted manuscript, 404 KB, PDF document
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Optical investigation of the natural electron doping in thin MoS2 films deposited on dielectric substrates
AU - Sercombe, D.
AU - Schwarz, S.
AU - Del Pozo-Zamudio, O.
AU - Liu, F.
AU - J. Robinson, B.
AU - A. Chekhovich, E.
AU - I. Tartakovskii, I.
AU - Kolosov, O.
AU - I. Tartakovskii, A.
N1 - This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ 17 pages, 5 figures
PY - 2013/12/12
Y1 - 2013/12/12
N2 - We use micro-photoluminescence (PL) and ultrasonic force microscopy to explore the effects of dielectric substrate and capping on optical properties of a few mono-layer MoS2 films. PL lineshapes and peak energies for uncapped films are found to vary widely. This non-uniformity is dramatically suppressed by capping with SiO2 and SiN, improving mechanical coupling of MoS2 with the surrounding dielectrics. Capping also leads to pronounced charging of the films, evidenced from the dominating negative trion peak in PL.
AB - We use micro-photoluminescence (PL) and ultrasonic force microscopy to explore the effects of dielectric substrate and capping on optical properties of a few mono-layer MoS2 films. PL lineshapes and peak energies for uncapped films are found to vary widely. This non-uniformity is dramatically suppressed by capping with SiO2 and SiN, improving mechanical coupling of MoS2 with the surrounding dielectrics. Capping also leads to pronounced charging of the films, evidenced from the dominating negative trion peak in PL.
KW - cond-mat.mtrl-sci
U2 - 10.1038/srep03489
DO - 10.1038/srep03489
M3 - Journal article
VL - 3
JO - Scientific Reports
JF - Scientific Reports
M1 - 03489
ER -