High efficiency color-tunable organic light-emitting diodes with ultra-thin emissive layers in blue phosphor doped exciplex

被引：20

作者：

Ying, Shian ^{[1
]}

Wu, Yibing ^{[1
]}

Sun, Qian ^{[1
]}

Dai, Yanfeng ^{[1
]}

Yang, Dezhi ^{[1
]}

Qiao, Xianfeng ^{[1
]}

Chen, Jiangshan ^{[1
]}

Ma, Dongge ^{[1
]}

机构：

[1] South China Univ Technol, Ctr Aggregation Induced Emiss, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2019年 / 114卷 / 03期

基金：

中国国家自然科学基金;

关键词：

OLEDS; TEMPERATURE; INDEX;

D O I：

10.1063/1.5082011

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High efficiency color-tunable organic light-emitting diodes (CT-OLEDs) have been demonstrated by combining non-doped ultrathin red and green phosphorescent emitters with a blue phosphorescence-doped exciplex system. The resultant devices deliver a sunlight-style emission with a wide correlated color-temperature span from 2143 to 7563 K and achieve the maximum current efficiency, the power efficiency, and the external quantum efficiency of 34.4 cd A(-1), 39.5 lm W-1, and 18.6%, respectively, without any out-coupling enhancements. Furthermore, the CT-OLEDs exhibit low efficiency roll-off that the external quantum efficiencies still remain 18.5% and 17.1% even at 1000 and 5000 cd m(-2), respectively, which are more efficient than those of state-of-the-art CT-OLEDs. Published under license by AIP Publishing.

引用

页数：5

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