Light Extraction from Organic Light Emitting Diodes Using Chemically Etched Glass Substrates
We have manufactured highly efficient OLED devices fabricated on chemically etched glass substrates. The external quantum efficiency of the OLED devices with the etched glass substrates was increased by 5∼27% in comparison with the reference flat glass substrate. Surface morphology, such as indented patterns, significantly affected the external luminance efficiency. A clean surface and the presence of smooth bent edges of indented patterns were found to be important for improving the external luminous efficacy.
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Document Type: Research Article
Publication date: 01 April 2012
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