Layer optimization in wight organic light emitting diodes (WOLEDs) to reduce the portion of guided waves in ITO/Glass interface |
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| Authors: | A. Rostami M. Noori S. Matloub |
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| Affiliation: | 1. Photonics and Nanocrystals Research Lab, Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz 5166614761, Iran;2. School of Engineering-Emerging Technologies, University of Tabriz, Tabriz 5166614761, Iran |
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| Abstract: | In this paper, our main attempt was to reduce Total Internal Reflection (TIR) happening at Indium Tin Oxide (ITO, nito = 1.8 + 0.01i) and Glass (nglass = 1.51) interface, which is due to ITO's higher index in comparison with Glass's, that makes light guided in ITO layer, 50% of generated light in Wight Organic Light Emitting Diodes (WOLED) are trapped in ITO layer; here we tried to reduce this portion of trapped light by implying 12-fold quasi-photonic crystal to the mentioned interface. With some gentle changes in 12-fold's structure we could reduce TIR in this interface to less than 9%. Also, far field results before and after adding the structure to WOLED were studied, which represents suitability of using this structure for lighting applications. |
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| Keywords: | WOLED 12-Fold quasi-photonic crystal TIR ITO IQE |
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