通过对基板进行喷砂处理从用于照明应用的有机发光二极管中提取光。

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

作者信息

Chen Shuming, Kwok Hoi Sing

机构信息

Center for Display Research, Department of Electronic & Computer Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong.

出版信息

Opt Express. 2010 Jan 4;18(1):37-42. doi: 10.1364/OE.18.000037.

DOI:10.1364/OE.18.000037

PMID:20173819

Abstract

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.

摘要

通过散射光从有机发光二极管（OLED）中提取光，是用于大面积照明应用的有效方法之一。在本文中，我们提出了一种非常简单且经济高效的方法来使基板表面粗糙化，从而散射光。通过简单地对玻璃基板的边缘和背面进行喷砂处理，已证明正向效率提高了20%。此外，由于散射效应，在所有视角上都获得了恒定的颜色以及具有朗伯分布的均匀光图案。这种简单且经济高效的方法可能适用于用于照明应用的大面积OLED的大规模生产。