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Title: Temperature dependent Raman spectroscopy of chemically derived few layer MoS{sub 2} and WS{sub 2} nanosheets

Abstract

We have systematically investigated the temperature dependent Raman spectroscopy behavior of a few layered MoS{sub 2} and WS{sub 2} nanosheets synthesized using simple hydrothermal method. Our result reveals A{sub 1g} and E{sup 1}{sub 2g} modes soften as temperature increases from 77 K to 623 K. This behavior can be explained in terms of a double resonance process which is active in single- and few layer thick nanosheets. The frequency shifts and peak broadening can provide unambiguous, nondestructive, and accurate information of a few layered MoS{sub 2} and WS{sub 2}. This mechanism can also be applicable in characterizing the structural, optical, electronic, and vibrational properties of other emerging layered materials.

Authors:
; ;  [1]
  1. School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 751013 (India)
Publication Date:
OSTI Identifier:
22293029
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; HYDROTHERMAL SYNTHESIS; MOLYBDENUM SULFIDES; NANOSTRUCTURES; RAMAN SPECTROSCOPY; RESONANCE; SHEETS; TEMPERATURE DEPENDENCE; TUNGSTEN SULFIDES

Citation Formats

Thripuranthaka, M., Kashid, Ranjit V., Late, Dattatray J., E-mail: dj.late@ncl.res.in, E-mail: datta099@gmail.com, and Sekhar Rout, Chandra. Temperature dependent Raman spectroscopy of chemically derived few layer MoS{sub 2} and WS{sub 2} nanosheets. United States: N. p., 2014. Web. doi:10.1063/1.4866782.
Thripuranthaka, M., Kashid, Ranjit V., Late, Dattatray J., E-mail: dj.late@ncl.res.in, E-mail: datta099@gmail.com, & Sekhar Rout, Chandra. Temperature dependent Raman spectroscopy of chemically derived few layer MoS{sub 2} and WS{sub 2} nanosheets. United States. https://doi.org/10.1063/1.4866782
Thripuranthaka, M., Kashid, Ranjit V., Late, Dattatray J., E-mail: dj.late@ncl.res.in, E-mail: datta099@gmail.com, and Sekhar Rout, Chandra. 2014. "Temperature dependent Raman spectroscopy of chemically derived few layer MoS{sub 2} and WS{sub 2} nanosheets". United States. https://doi.org/10.1063/1.4866782.
@article{osti_22293029,
title = {Temperature dependent Raman spectroscopy of chemically derived few layer MoS{sub 2} and WS{sub 2} nanosheets},
author = {Thripuranthaka, M. and Kashid, Ranjit V. and Late, Dattatray J., E-mail: dj.late@ncl.res.in, E-mail: datta099@gmail.com and Sekhar Rout, Chandra},
abstractNote = {We have systematically investigated the temperature dependent Raman spectroscopy behavior of a few layered MoS{sub 2} and WS{sub 2} nanosheets synthesized using simple hydrothermal method. Our result reveals A{sub 1g} and E{sup 1}{sub 2g} modes soften as temperature increases from 77 K to 623 K. This behavior can be explained in terms of a double resonance process which is active in single- and few layer thick nanosheets. The frequency shifts and peak broadening can provide unambiguous, nondestructive, and accurate information of a few layered MoS{sub 2} and WS{sub 2}. This mechanism can also be applicable in characterizing the structural, optical, electronic, and vibrational properties of other emerging layered materials.},
doi = {10.1063/1.4866782},
url = {https://www.osti.gov/biblio/22293029}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 8,
volume = 104,
place = {United States},
year = {Mon Feb 24 00:00:00 EST 2014},
month = {Mon Feb 24 00:00:00 EST 2014}
}