High-efficiency blue multilayer polymer light-emitting diode based on poly(9,9-dioctylfluorene)

A highly efficient blue polymer light-emitting diode based exclusively on commercial poly(9,9-dioctylfluorene) and poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4′-(N-(4-s-butylphenyl)) diphenylamine)] is demonstrated. High electroluminescent efficiency is achieved by enhancing electron currents and ma...

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Published in:Journal of applied physics 2007-04, Vol.101 (8)
Main Authors: Tseng, Shin-Rong, Li, Shiuan-Yi, Meng, Hsin-Fei, Yu, Yi-Hsiang, Yang, Chia-Ming, Liao, Hua-Hsien, Horng, Sheng-Fu, Hsu, Chian-Shu
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cited_by cdi_FETCH-LOGICAL-c229t-d86fe74648040b1df4df487ed0ddaaf015f6e983960a5f9f57e3c50b72f2c0e83
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container_issue 8
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container_title Journal of applied physics
container_volume 101
creator Tseng, Shin-Rong
Li, Shiuan-Yi
Meng, Hsin-Fei
Yu, Yi-Hsiang
Yang, Chia-Ming
Liao, Hua-Hsien
Horng, Sheng-Fu
Hsu, Chian-Shu
description A highly efficient blue polymer light-emitting diode based exclusively on commercial poly(9,9-dioctylfluorene) and poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4′-(N-(4-s-butylphenyl)) diphenylamine)] is demonstrated. High electroluminescent efficiency is achieved by enhancing electron currents and making devices in multilayered structures. CsF∕Al is used as the efficient electron injection cathode, and the fabrication process is in the glove box to enhance electron mobility by reducing oxygen adsorption. The multilayer structure is prepared by the liquid buffer layer technique. The maximum efficiency is 2.5 cd∕A at deep blue with the corresponding external quantum efficiency of 2%.
doi_str_mv 10.1063/1.2721830
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title High-efficiency blue multilayer polymer light-emitting diode based on poly(9,9-dioctylfluorene)
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