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Two‐Dimensional TiO 2 Inverse Opal with a Closed Top Surface Structure for Enhanced Light Extraction from Polymer Light‐Emitting Diodes
Author(s) -
Jin Hyun Woo,
Ken Lee Hang,
Soon Oh Sang,
Hess Ortwin,
Choi ChoonGi,
Hyuk Im Sang,
Park O Ok
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201004660
Subject(s) - materials science , electroluminescence , light emitting diode , anode , diode , optoelectronics , photonic crystal , inverse , substrate (aquarium) , polymer , electrode , extraction (chemistry) , nanotechnology , composite material , layer (electronics) , chemistry , geometry , mathematics , oceanography , chromatography , geology
Two‐dimensional TiO 2 inverse opal structures with a thin, flat‐top surface are fabricated and inserted between the glass substrate and the anode electrode of solution‐processed polymer light‐emitting diodes. It is demonstrated that the proposed inverse opal structure acts as a 2D photonic crystal, achieving a significant enhancement in the light extraction from the electroluminescent devices.