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12 May 2004 The influences of injection and recombination on the EL efficiency in organic single-layer EL devices
Chu-jun Zhao, Hongjian Li, Hao-yang Cui, Xue-mei Xu, Shu Qu, Jingcui Peng
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Proceedings Volume 5280, Materials, Active Devices, and Optical Amplifiers; (2004) https://doi.org/10.1117/12.523025
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China
Abstract
We have developed an analytical model to calculate the EL profile at high electric field in single layer structure, taking into account the charge injection process at each electrode, fission and recombination of polaron-excitons. By simulation, the influences of injection barriers on EL efficiency and fission distance on recombination efficiency are thoroughly studied. Using either both ohmic contacts or using an ohmic contact to inject the low mobility carrier and a contact limited contact to inject the high mobility carrier can obtain efficient devices. By comparison of the theoretical results with the experimental data reported in the literature, we found this model can reasonably elucidates the influences of some factors on injection and recombination.
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Chu-jun Zhao, Hongjian Li, Hao-yang Cui, Xue-mei Xu, Shu Qu, and Jingcui Peng "The influences of injection and recombination on the EL efficiency in organic single-layer EL devices", Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); https://doi.org/10.1117/12.523025
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KEYWORDS
Electroluminescence
Data modeling
Electrodes
Optical amplifiers
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