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1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material for organic light emitting diodes
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- Фізико-технічні та математичні науки
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- Відділення фізики і астрономії
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- Semiconductor Physics Quantum Electronics & Optoelectronics
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- Semiconductor Physics Quantum Electronics & Optoelectronics, 2007, том 10
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- Semicond. Physics Quantum Electronics & Optoelectronics, 2007, № 1
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1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material for organic light emitting diodes
Інший ID:
PACS 73.50.-h, 78.60.Fi
Посилання:
1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material
for organic light emitting diodes / L. Fenenko, Guoliang Mao, Akihiro Orita, Junzo Otera, P. Smertenko, G. Svechnikov, Jun-ichi Nishide, Hiroyuki Sasabe, Chihaya Adachi // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2007. — Т. 10, № 1. — С. 77-82. — Бібліогр.: 24 назв. — англ.
Підтримка:
We are very grateful to the 21st Century COE program of “Molecular Informatics” for financial support of this study.
Дата:
2007
Переглядів:
1027
Завантажень:
543
Анотація:
We report on the photophysical properties of 1,4-bis(2,2-diphenylethenyl)benzene
(PEB) in a solution and a solid state. A poor blue photoluminescence efficiency of PEB in a solution dramatically increases in the deposited film. We explain such properties in terms of molecular dynamics and degrees of intramolecular freedom in various molecular environments. PEB as an electron-transport and emitting layer in organic light-emitting diodes (OLEDs) shows bright blue-green electroluminescence (EL) with the peak wavelength at λmax ~ 495 nm. The maximum external EL quantum efficiency of ηEL = 2.5 % and maximum luminance of 41600 cd/m2 in the optimized device were obtained, indicating that PEB possesses superior electron-transport ability.
