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학술지 Color-Stable, ITO-Free White Organic Light-Emitting Diodes with Enhanced Efficiency Using Solution-Processed Transparent Electrodes and Optical Outcoupling Layers
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저자
Hong-Wei Chang, Yong Hyun Kim, 이종희, Simone Hofmann, Bjorn Lussem, Lars Muller-Meskamp, Malte C. Gather, Karl Leo, Chung-Chih Wu
발행일
201405
출처
Organic Electronics, v.15 no.5, pp.1028-1034
ISSN
1566-1199
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.orgel.2014.02.017
협약과제
14PB2200, AMOLED TV용 soluble TFT 및 화소 형성 소재/공정 기술 개발, 이종희
초록
In this work, we demonstrate color-stable, ITO-free white organic light-emitting diodes (WOLEDs) with enhanced efficiencies by combining the high-conductivity conducting polymer PEDOT:PSS as transparent electrode and a nanoparticle-based scattering layer (NPSL) as the effective optical out-coupling layer. In addition to efficiency enhancement, the NPSL is also beneficial to the stabilization of electroluminescent spectra/colors over viewing angles. Both the PEDOT:PSS and the NPSL can be fabricated by simple, low-temperature solution processing. The integration of both solution-processable transparent electrodes and light extraction structures into OLEDs is particularly attractive for applications since they simultaneously provide manufacturing, cost and efficiency advantages. © 2014 Elsevier B.V. All rights reserved.
키워드
Conducting polymer, OLEDs, Optical outcoupling, Transparent electrode
KSP 제안 키워드
Conducting polymers, Coupling layer, ITO-free, Low temperature(LT), Organic light-emitting diodes(OLEDS), Scattering layer, Solution processing, Solution-processed, White organic light-emitting diodes, efficiency enhancement, enhanced efficiency