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http://dx.doi.org/10.6117/kmeps.2014.21.3.031

Light Efficiency of LED Package with TiO2-nanoparticle-dispersed Encapsulant  

Lee, Tae-Young (Advanced Welding and Joining R&BD Group, Korea Institute of Industrial Technology)
Kim, Kyoung-Ho (Advanced Welding and Joining R&BD Group, Korea Institute of Industrial Technology)
Kim, Mi-Song (Advanced Welding and Joining R&BD Group, Korea Institute of Industrial Technology)
Ko, Eun-Soo (EI Lighting Co., Ltd.)
Chio, Jong-Hyun (EI Lighting Co., Ltd.)
Moon, Kyoung-Sik (School of Materials Science and Engineering, Georgia Institute of Technology)
Kim, Mok-Soon (Dept. of Materials Science and Engineering, Inha University)
Yoo, Sehoon (Advanced Welding and Joining R&BD Group, Korea Institute of Industrial Technology)
Publication Information
Journal of the Microelectronics and Packaging Society / v.21, no.3, 2014 , pp. 31-35 More about this Journal
Abstract
$TiO_2$-nanoparticle-dispersed silicone was applied to a LED package and the light efficiency of the LED package was evaluated in this study. The addition of $TiO_2$ nanoparticles in silicone increased refractive index, which improved the light efficiency of the LED package. The $TiO_2$ nanoparticles were fabricated by hydrothermal synthesis and were dispsersed by a vinyl silane coating treatment. After the silane treatment, the $TiO_2$ nanoparticles dispersed with diameters of 10~40 nm but rod-shape $TiO_2$ nanoparticles with lengths of 100 nm were also observed. The refractive index increased with the $TiO_2$ concentration in silicone, while the transmittance decreased with the $TiO_2$ concentration. The light efficient of the LED package with $TiO_2$+silicone encapsulant was higher than that of the LED package with no $TiO_2$ in silicone encapsulant.
Keywords
LED; Package; $TiO_2$; Nanoparticle; Encapsulant; Light efficiency; Hydro thermal synthesis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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