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

共 24 条

[1] Third-generation organic electroluminescence materials [J].

Adachi, Chihaya .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2014, 53 (06)

[2] Color-tunable organic light-emitting devices [J].

Burrows, PE ;

Forrest, SR ;

Sibley, SP ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 1996, 69 (20) :2959-2961

[3] Marching Toward Highly Efficient, Pure-Blue, and Stable Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes [J].

Cai, Xinyi ;

Su, Shi-Jian .

ADVANCED FUNCTIONAL MATERIALS, 2018, 28 (43)

[4] Strategies to Design Bipolar Small Molecules for OLEDs: Donor-Acceptor Structure and Non-Donor-Acceptor Structure [J].

Duan, Lian ;

Qiao, Juan ;

Sun, Yongduo ;

Qiu, Yong .

ADVANCED MATERIALS, 2011, 23 (09) :1137-1144

[5] Purely Organic Materials with Aggregation-Induced Delayed Fluorescence for Efficient Nondoped OLEDs [J].

Guo, Jingjing ;

Zhao, Zujin ;

Tang, Ben Zhong .

ADVANCED OPTICAL MATERIALS, 2018, 6 (15)

[6] Review paper: Recent developments in light extraction technologies of organic light emitting diodes [J].

Hong, Kihyon ;

Lee, Jong-Lam .

ELECTRONIC MATERIALS LETTERS, 2011, 7 (02) :77-91

[7] Sunlight-style organic light-emitting diodes [J].

Jou, Jwo-Huei ;

Shen, Shih-Ming ;

Wu, Ming-Hsuan ;

Peng, Shiang Hau ;

Wang, Hsi-Ching .

JOURNAL OF PHOTONICS FOR ENERGY, 2011, 1

[8] Sunlight-style color-temperature tunable organic light-emitting diode [J].

Jou, Jwo-Huei ;

Wu, Ming-Hsuan ;

Shen, Shih-Ming ;

Wang, Hsi-Ching ;

Chen, Sun-Zen ;

Chen, Szu-Hao ;

Lin, Chuen-Ren ;

Hsieh, Yueh-Lin .

APPLIED PHYSICS LETTERS, 2009, 95 (01)

[9] Color temperature tuning of white organic light-emitting diodes via spatial control of micro-cavity effects based on thin metal strips [J].

Lee, Jonghee ;

Koh, Tae-Wook ;

Cho, Hyunsu ;

Hofmann, Simone ;

Reineke, Sebastian ;

Lee, Jae-Hyun ;

Lee, Jeong-Ik ;

Yoo, Seunghyup ;

Leo, Karl ;

Gather, Malte C. .

ORGANIC ELECTRONICS, 2015, 26 :334-339

[10] High-Performance Doping-Free Hybrid White OLEDs Based on Blue Aggregation-Induced Emission Luminogens [J].

Liu, Baiquan ;

Nie, Han ;

Lin, Gengwei ;

Hu, Shiben ;

Gao, Dongyu ;

Zou, Jianhua ;

Xu, Miao ;

Wang, Lei ;

Zhao, Zujin ;

Ning, Honglong ;

Peng, Junbiao ;

Cao, Yong ;

Tang, Ben Zhong .

ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (39) :34162-34171

← 1 2 3 →