Temperature dependent Raman spectroscopy of chemically derived few layer MoS{sub 2} and WS{sub 2} nanosheets
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 751013 (India)
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.
- OSTI ID:
- 22293029
- Journal Information:
- Applied Physics Letters, Vol. 104, Issue 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
High temperature Raman investigation of few-layer MoTe{sub 2}
Direct intercalation of MoS2 and WS2 thin films by vacuum filtration