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Issue 7, 2013
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Enhanced optical response of hybridized VO2/graphene films

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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.

Graphical abstract: Enhanced optical response of hybridized VO2/graphene films

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Publication details

The article was received on 12 Dec 2012, accepted on 03 Feb 2013 and first published on 13 Feb 2013


Article type: Communication
DOI: 10.1039/C3NR34054F
Citation: Nanoscale, 2013,5, 2632-2636
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    Enhanced optical response of hybridized VO2/graphene films

    H. Kim, Y. Kim, T. Kim, A. Jang, H. Y. Jeong, S. H. Han, D. H. Yoon, H. S. Shin, D. J. Bae, K. S. Kim and W. S. Yang, Nanoscale, 2013, 5, 2632
    DOI: 10.1039/C3NR34054F

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