NDLI: Enhanced optical response of hybridized VO<sub>2</sub>/graphene films

Content Provider	Royal Society of Chemistry (RSC)
Author	Jeong, Hu Young Han, Seung Ho Kim, Yena Kim, TaeYoung Kim, Keun Soo Jang, A-Rang Yang, Woo Seok Shin, Hyeon Suk Yoon, Dae Ho Kim, Hyeongkeun Bae, Dong Jae
Copyright Year	2013
Abstract	Application of graphene as transparent electrodes is an active research area due to its excellent electrical and optical properties. Vanadium dioxide (VO2) is an attractive material since it is a thermochromic material that undergoes a structural phase transition when heat is applied. The phase transition results in the change of electrical and optical characteristics. We report optical characteristics of hybrid materials of graphene and VO2. We observed a 12% improvement in infrared transmittance with VO2 films deposited on graphene sapphire substrates compared to that of bare sapphire substrates. We also found that the phase transition temperature decreases as the number of graphene layers on the substrates increases. In the case of VO2 films on the substrate that was coated with four layers of graphene, the mean phase transition temperature was lowered to ∼56 °C.
Starting Page	2632
Ending Page	2636
Page Count	5
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	5
Issue Number	7
Journal	Nanoscale
DOI	10.1039/c3nr34054f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Vanadium(IV) oxide Infrared Graphene Thermochromism Phase transition
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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Enhanced optical response of hybridized VO₂/graphene films