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A Study on Transparent Polymer Composite Films with High Emissivity  

Kim, Jeong-Hwan (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education)
Shin, Dong-Kyun (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education)
Seo, Hwa-Il (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education)
Park, Jong-Woon (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education)
Publication Information
Journal of the Semiconductor & Display Technology / v.12, no.1, 2013 , pp. 29-33 More about this Journal
Abstract
We have fabricated transparent polymer composite films with high thermal emissivity, which can be used for heat dissipation of transparent electronics. PMMA (poly(methyl methacrylate)) solution with high transparency and thermal emissivity is mixed with various fillers (carbon nanotubes (CNTs), aluminum nitride (AlN), or silicon carbide (SiC)) with high thermal conductivity. We have achieved the thermal emissivity as high as 0.94 by the addition of CNTs. Compared with the PMMA film on glass, however, the addition of AlN or SiC is shown to rather decrease the thermal emissivity. It is also observed that the thickness of the PMMA film does not affect its thermal emissivity. To avoid any degradation of the thermal conductivity, therefore, the PMMA film thickness is desirable to be $1{\mu}m$. There also exists a tradeoff between the optical transmittance and thermal conductivity on the selection of the amount of fillers.
Keywords
Polymer composite; Emissivity; PMMA; Transparency; Thermal conductivity;
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Times Cited By KSCI : 2  (Citation Analysis)
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