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Title: Temperature dependent Raman spectroscopy of chemically derived few layer MoS2 and WS2 nanosheets
Authors: Thripuranthaka M.
Kashid R.V.
Sekhar Rout C.
Late D.J.
Issue Date: 2014
Citation: 123
Abstract: We have systematically investigated the temperature dependent Raman spectroscopy behavior of a few layered MoS2 and WS2 nanosheets synthesized using simple hydrothermal method. Our result reveals A1g and E12g 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 MoS2 and WS2. This mechanism can also be applicable in characterizing the structural, optical, electronic, and vibrational properties of other emerging layered materials. � 2014 AIP Publishing LLC.
Appears in Collections:Research Publications

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