Roll-Off Characteristics of Electroluminescence Efficiency of Organic Blue Electrophosphorescence Diodes
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概要
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We studied the relaxation of electroluminescence roll-off characteristics by changing the dopant concentration and thickness of the emitting layer in organic blue electrophosphorescence diodes composed of a 2,6-dicarbazolo-1,5-pyridine host doped with iridium(III)-bis[(4,6-di-fluorophenyl)-pyridinato-N,C2]picolinate. Analyzing the roll-off characteristics using the theoretical models of triplet–triplet annihilation and triplet–polaron annihilation (TPA), we found that the roll-off characteristics of these devices were determined primarily by TPA.
- 2008-09-25
著者
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Adachi Chihaya
Center For Future Chemistry Kyushu University
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Yahiro Masayuki
Center For Future Chemistry Kyushu University
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Imai Toshiro
Department Of Chemistry Faculty Of Science Hokkaido University
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Sasabe Hiroyuki
Department Of Drug Metabolism Tokushima Research Institute Otsuka Pharmaceutical Co. Ltd.
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YOSHIZAKI Hiroki
Koei Chemical Co.
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Imai Toshiro
Department of Photonics Materials Science, Chitose Institute of Science and Technology, 758-65 Bibi, Chitose, Hokkaido 066-8655, Japan
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Son Kyung
Center for Future Chemistry, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
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Nishide Junichi
Department of Photonics Materials Science, Chitose Institute of Science and Technology, 758-65 Bibi, Chitose, Hokkaido 066-8655, Japan
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Sasabe Hiroyuki
Department of Photonics Materials Science, Chitose Institute of Science and Technology, 758-65 Bibi, Chitose, Hokkaido 066-8655, Japan
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Yoshizaki Hiroki
Koei Chemical Co., Ltd., 3-7-2 Nihonbashi-honcho, Chuo, Tokyo 103-0023, Japan
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