Highly efficient non-doped blue OLED based on perylene

被引：7

作者：

Liang, N. ^{[1
]}

Zhao, Y. K. ^{[1
]}

Wu, Y. Z. ^{[1
]}

Zhang, C. R. ^{[2
]}

Shao, M. ^{[3
]}

机构：

[1] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China

[2] Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China

[3] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2021年 / 119卷 / 05期

基金：

中国国家自然科学基金;

关键词：

LIGHT-EMITTING-DIODES; ELECTROLUMINESCENT; DEVICES; FLUORESCENCE; EMISSION; GREEN; PROBE; RED;

D O I：

10.1063/5.0044609

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An efficient non-doped blue organic light-emitting diode with several-nanometer-thick easy-to-aggregate fluorescent material perylene is reported in which two thin layers of perylene as blue emitters are located at both the sides of ambipolar material, 4,4 '-N,N '-dicarbazole-biphyenyl (CBP), and the aggregation behavior of perylene in films is prevented. The maximum luminance and external quantum efficiency are 16 000 +/- 600 cd/m(2) and 3.0% +/- 0.02% (3.70 +/- 0.03 cd/A), respectively. Commission Internationale de l'Eclairage co-ordinates are basically x = 0.14 and y = 0.15. Although Foster energy transfer from CBP to perylene is efficient, the carrier confining induced exciton direct formation mechanism is considered to dominate the process of electroluminescence.

引用

页数：6

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