1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material for organic light emitting diodes

• Опубліковано в: : Semiconductor Physics Quantum Electronics & Optoelectronics
• Дата: 2007
• Автори: Fenenko, L., Guoliang Mao, Akihiro Orita, Junzo Otera, Smertenko, P., Svechnikov, G., Jun-ichi Nishide, Hiroyuki Sasabe, Chihaya Adachi
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2007
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/117779
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: 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.

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.