Organic electronics p. 285 - 291 (2015)
Update date:2022-08-25
Topics:
Jou, Jwo-Huei
Hsieh, Yao-Ching
Yu, Hui-Huan
An, Chih-Chia
Li, Chieh-Ju
Chen, Chien-Tien
Chao, Wei-Shan
Liu, Hao-Wei
Shyue, Jing-Jong
A bright orange-red organic light-emitting diode (OLED) with an extraordinarily high external quantum efficiency (EQE) was achieved by using a seven-member-ring based fluorescent emitter with a matching host. The emitter, 3-(N,N-diphenylamino)-7-(β,β-dicyanoethenyl)-5,5-spirofluorenyl-5H-dibenzo[a,d]-cycloheptene, was composed of a spirally configured cis-stilbene/fluorene moiety with an ambipolar character, and the matching host was 1-butyl-9,10-naphthalene-anthracene (BANE). An orange-red emission peaking at 617 nm with an EQE continuously rolling up to its observable maximum luminance was obtained as a 1.5 wt% of the red emitter was doped into the BANE host. For examples, the EQEs were increased from 5.01 ± 0.015% to 5.76 ± 0.02%, and 6.43 ± 0.04% as the luminance was increased from 10,000 to 15,000 and 20,000 cd/m2, respectively. The high efficiency at high brightness as well as an unusual efficacy roll-up may be attributed to both the efficiency-effective device architectural factors, including low injection barriers, balanced carrier injection, effective host-to-guest energy transfer, and effective exciton generation on both host and guest, and the ambipolar emitter that showed an increasing balance in carrier injection as the applied voltage continued to increase.
View MoreYurui(Shanghai)Chemical Co.,Ltd
Contact:0086 21-50456736
Address:No.3188 Xiupu Road,Shanghai
ZHEJIANG CHEMICAL INDUSTRY INSTITUTE TECHNOLOGY CO.,LTD
Contact:86-575-82730298
Address:shangyu
Shijiazhuang Haitian Amino Acid Co., Ltd.
Contact:+86-311-88908111
Address:Shijiazhuang Hebei province,China
Shanghai Send Pharmaceutical Technology Co., Ltd.
website:http://www.shsendpharma.com
Contact:021-58088081, +8613585868794
Address::Room A601, Building 1,NO. 800 Qingdai Road Pudong District Shanghai,China
Anhui Sholon New Material Technology Co., Ltd.
website:http://www.sholonchem.com
Contact:+86-550-5261666
Address:4/F Block B, Beijing Chemical Building.No.520 Tianrun Road ,Science & Education Town Wujin District, Changzhou City Jiangsu Province
Doi:10.1039/c6nj00478d
(2016)Doi:10.3390/molecules24203748
(2019)Doi:10.1016/S0040-4039(01)00346-X
(2001)Doi:10.1021/ja973408d
(1998)Doi:10.1039/d0cc06517j
(2020)Doi:10.1021/jp046514s
(2005)