Solution-processible corrugated structure and scattering layer for enhanced light extraction from organic light-emitting diodes

被引：6

作者：

Hyun, Woo Jin ^{[1
]}

Im, Sang Hyuk ^{[2
]}

Park, O. Ok ^{[1
,3
]}

Chin, Byung Doo ^{[4
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, BK21 Grad Program, 335 Gwahangno, Daejeon 305701, South Korea

[2] KRICT, Adv Mat Div, KRICT EPFL Global Res Lab, Daejeon 305600, South Korea

[3] DGIST, Dept Energy Syst Engn, Daegu 711873, South Korea

[4] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi, South Korea

来源：

JOURNAL OF INFORMATION DISPLAY | 2012年 / 13卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

organic light-emitting diodes; light extraction; sol-gel; corrugated structure; scattering layer;

D O I：

10.1080/15980316.2012.742470

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple method of fabricating out-coupling structures was demonstrated via solution-processing to enhance light extraction from organic light-emitting diodes (OLEDs). Scattering layers were easily obtained by spin-coating an SiO2 sol solution that contained TiO2 particles. By introducing the scattering layer and the solution-processible corrugated structure as internal and external extraction layers, the OLEDs showed increased external quantum efficiency without a change in the electroluminescence spectrum compared to conventional devices. Using these solution-processible out-coupling structures, nearly all-solution-processed OLEDs with enhanced light extraction could be fabricated. The light extraction enhancement is attributed to the suppression by the out-coupling structures of the light-trapping that arose at the interface of the glass substrate and the air.

引用

页码：151 / 157

页数：7

共 16 条

[1] Theoretical analysis on light-extraction efficiency of organic light-emitting diodes using FDTD and mode-expansion methods [J].