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High temperature study on the thermal properties of few-layer Mo0.5W0.5S2 and effects of capping layers
- Source :
- Results in Physics, Vol 7, Iss , Pp 4394-4397 (2017)
- Publication Year :
- 2017
- Publisher :
- Elsevier, 2017.
-
Abstract
- We investigated the thermal properties of few-layer Mo0.5W0.5S2 using a series of samples with different kinds of capping layers. Temperature-dependent Raman measurements were conducted in the range of 300–500 K, with power-dependent measurements also carried out. It indicated, for the few-layer Mo0.5W0.5S2, the temperature coefficients of the WS2-like E12g mode, MoS2-like E12g mode and A1g mode were −0.0155 cm−1/K, −0.0146 cm−1/K, and −0.0130 cm−1/K, respectively. And the thermal conductivity was estimated to be 44.8 W/mK. Moreover, the Mo0.5W0.5S2 samples coated with capping layers (ZrO2, HfO2) both showed a better thermal stability and a larger thermal conductivity than the one without. The results revealed that the capping layer should be an important factor in the thermal property. Keywords: Mo0.5W0.5S2, TMDs, Thermal properties, High temperature, Capping layers, Raman
Details
- Language :
- English
- ISSN :
- 22113797
- Volume :
- 7
- Issue :
- 4394-4397
- Database :
- Directory of Open Access Journals
- Journal :
- Results in Physics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.9a272453934f1fad8ce4383861a75f
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.rinp.2017.11.017