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Song, Myoung Hoon
Organic Photonics & Optoelectronics Lab
Research Interests
  • Organic optoelectrics, perovskite light-emitting diodes, surface treatment, photonic crystals

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High efficiency composite metal oxide-polymer electroluminescent devices: A morphological and material based investigation

Cited 71 times inthomson ciCited 67 times inthomson ci
Title
High efficiency composite metal oxide-polymer electroluminescent devices: A morphological and material based investigation
Author
Kabra, DineshSong, Myoung HoonWenger, BernardFriend, Richard H.Snaith, Henry J.
Keywords
LIGHT-EMITTING-DIODES; CONJUGATED POLYMERS; PHASE-SEPARATION; BLENDS; EMISSION; FILMS
Issue Date
2008-09
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED MATERIALS, v.20, no.18, pp.3447 - +
Abstract
A comprehensive study of various metal oxides in mesoporous and compact forms for electron injection in highly luminescent composite oxide-polymer light emitting diodes (COPLED) was presented. An improved performance with higher luminance and lower turn on voltage without O2 plasma treatment of the ITO prior to metal-oxide deposition is observed. It is found that the compact TiO2 performs considerably better than the mesoporous TiO2 and that the compact ZnO electron injection layer performs better than mesoporous and compact anatase. The higher current densities are due to leakage current through metal-oxide compact layers, and improvement of this deposition is found to increase the performance. Introducing a photonic structure into the metal oxide layers is found to enhance the optical out-coupling and electroluminescance efficiency.
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DOI
10.1002/adma.200800202
ISSN
0935-9648
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MSE_Journal Papers
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