Enhanced light extraction efficiency in organic light emitting diodes using a tetragonal photonic crystal with hydrogen silsesquioxane

Yang Doo Kim, Kyeong Hoon Han, Sang Jun Park, Jung Bum Kim, Ju Hyeon Shin, Jang Joo Kim, Heon Lee

Research output: Contribution to journalArticle

12 Citations (Scopus)


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/cm2, respectively, without electric degradation.

Original languageEnglish
Pages (from-to)5901-5904
Number of pages4
JournalOptics Letters
Issue number20
Publication statusPublished - 2014 Jan 1


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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