Fluorescent pyrene-imidazole material for deep-blue organic light-emitting devices

被引：12

作者：

Usman, Khurram ^{[1
,4
]}

Islam, Amjad ^{[1
,2
]}

Shah, Syed Hamad Ullah ^{[3
]}

Javaid, Kashif ^{[1
,5
]}

Amin, Al ^{[6
]}

Mustafa, Zeeshan ^{[1
,7
]}

Wattoo, Abdul Ghafar ^{[1
,9
]}

Abbas, Nadeem ^{[1
,8
]}

Ge, Ziyi ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China

[2] Coll Sci & Technol, Dept Appl Phys, Korea Univ, Sejong Campus,2511 Sejong Ro, Sejong 30019, South Korea

[3] Natl Univ Sci & Technol NUST, Sch Chem & Mat Engn, Dept Mat Engn, Islamabad 44000, Pakistan

[4] South China Normal Univ, Int Acad Optoelect Zhaoqing, Guangzhou, Peoples R China

[5] Univ Faisalabad, Dept Phys, Govt Coll, Allama Iqbal Rd, Faisalabad 38000, Pakistan

[6] Gyeongsang Natl Univ, Coll Engn, Dept Elect Engn, Jinju Si 52828, South Korea

[7] Lahore Garrison Univ, Dept Phys, Lahore, Pakistan

[8] Univ Leicester, Dept Chem, Univ Rd, Leicester LE1 7RH, Leics, England

[9] Khwaja Fareed Univ Engn & Informat Technol, Dept Phys, Rahim Yar Khan 64200, Pakistan

来源：

OPTICAL MATERIALS | 2021年 / 121卷

基金：

中国国家自然科学基金;

关键词：

Pyrene; Imidazole; Thermal-stability; Deep-blue; Organic light-emitting devices; ANTHRACENE-DERIVATIVES; HOST MATERIALS; DIODES; EFFICIENCY; DESIGN;

D O I：

10.1016/j.optmat.2021.111582

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Numerous endeavors have been exerted to devise deep-blue light-emitting materials (LEMs) for organic light-emitting devices (OLEDs). Nevertheless, deep-blue light-emitting materials exhibiting high efficiency for simple-structured OLEDs are still scarce. Herein, a donor-acceptor based LEM, 4'-(4, 5-diphenyl-1-(3-(pyren-1-yl) phenyl)-1H-imidazole-2-yl)-N,N-diphenylbiphenyl-4-amine (TPA-PyI) is developed by merging imidazole, triphenyl-amine and pyrene units for OLEDs. TPA-PyI is used as the emitting layer in OLED device, which emits a deep-blue fluorescence at 444 nm. With a current efficiency (CE) of 3.05 cd/A and a power efficiency (PE) of 2.95 lm/W, an EQE of 2.97% is achieved. High thermal-stability is achieved with decomposition-temperature (T-d) of 516 degrees C.

引用

页数：6

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