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Enhanced light extraction efficiency in organic light emitting diodes using a tetragonal photonic crystal with hydrogen silsesquioxane
- Authors
- Kim, Yang Doo; Han, Kyeong-Hoon; Park, Sang-Jun; Kim, Jung-Bum; Shin, Ju-Hyeon; Kim, Jang Joo; Lee, Heon
- Issue Date
- 15-10월-2014
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICS LETTERS, v.39, no.20, pp.5901 - 5904
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICS LETTERS
- Volume
- 39
- Number
- 20
- Start Page
- 5901
- End Page
- 5904
- ISSN
- 0146-9592
- Abstract
- We report an organic light emitting diode (OLED) with a hydrogen silsesquioxane as a scattering material, for enhancing light extraction efficiency. A tetragonal photonic crystal was used as pattern type, and fabricated using a direct printing technique. Planarization was accomplished using TiO2 solgel solution, having a refractive index identical to that of the indium zinc oxide transparent electrode. The current efficiency and power efficiency of the OLED increased by 17.3% and 43.4% at 10 mA/cm(2), respectively, without electric degradation. (C) 2014 Optical Society of America
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