Light extraction from organic light-emitting diodes for lighting applications by sand-blasting substrates

被引：77

作者：

Chen, Shuming ^{[1
]}

Kwok, Hoi Sing ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Ctr Display Res, Kowloon, Hong Kong, Peoples R China

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 01期

关键词：

SCATTERING; EFFICIENCY; DEVICES; OUTPUT;

D O I：

10.1364/OE.18.000037

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Light extraction from organic light-emitting diodes (OLEDs) by scattering the light is one of the effective methods for large-area lighting applications. In this paper, we present a very simple and cost-effective method to rough the substrates and hence to scatter the light. By simply sand-blasting the edges and back-side surface of the glass substrates, a 20% improvement of forward efficiency has been demonstrated. Moreover, due to scattering effect, a constant color over all viewing angles and uniform light pattern with Lambertian distribution has been obtained. This simple and cost-effective method may be suitable for mass production of large-area OLEDs for lighting applications. (C) 2009 Optical Society of America

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收藏

页码：37 / 42

页数：6

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