標題: Efficient Heat Dissipation of Photonic Crystal Microcavity by Mono layer Graphene
作者: Shih, Min-Hsiung
Li, Lain-Jong
Yang, Yi-Chun
Chou, Hsiang-Yu
Lin, Cheng-Te
Su, Ching-Yuan
光電工程學系
Department of Photonics
關鍵字: graphene;photonic crystals;heat dissipation;thermal resistance;optical cavity
公開日期: 1-Dec-2013
摘要: Graphene, which exhibits excellent thermal conductivity, is a potential heat dissipation medium for compact optoelectronic devices. Photonic devices normally produce large-quantity of unwanted heat, and thus, a heat dissipation strategy is urgently needed. In this study, single-layer graphene (SLG) grown by chemical vapor deposition (CVD) is used to cover the surface of a photonic crystal (PhC) cavity, where the heat flux produced by the PhC cavity can be efficiently dissipated along the in-plane direction of the SLG. The thermal properties of the graphene-capped PhC cavity were characterized by experiments and theoretical calculations. The thermal resistance of the SLG-capped PhC cavity obtained from experiments is lower than half of that of a bare PhC cavity. The temperature of a SLG-capped PhC cavity is 45 K lower than that without SLG capping under an optical power of 100 mu W. Our simulation results indicate that SLG receives the majority of the heat fluxes from the device, leading to the efficient heat dissipation. Both the experimental and simulation results suggest that the SLG is a promising material to enhance the heat dissipation efficiency for optoelectronic applications.
URI: http://dx.doi.org/10.1021/nn404097s
http://hdl.handle.net/11536/23426
ISSN: 1936-0851
DOI: 10.1021/nn404097s
期刊: ACS NANO
Volume: 7
Issue: 12
起始頁: 10818
結束頁: 10824
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