期刊
OPTICS EXPRESS
卷 18, 期 1, 页码 37-42出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.000037
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资金
- Hong Kong Government Research Grants Council [614807]
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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