基于苯并噻二唑的红光材料合成及其光电性质  

Synthesis and Photoelectric Properties of Benzothiadiazole Based Red Emitters

作　　者：祝杰记 杨国喜 佟庆笑[2] ZHU Jieji;YANG Guoxi;TONG Qingxiao(School of Chemistry and Environmental Engineering,Hanshan Normal University,Chaozhou 521041,China;School of Chemistry and Engineering,Shantou University,Shantou 515063,China)

机构地区：[1]韩山师范学院化学与环境工程学院,广东潮州521041 [2]汕头大学化学化工学院,广东汕头515063

出　　处：《发光学报》2024年第11期1819-1827,共9页Chinese Journal of Luminescence

基　　金：2022年度广东省普通高校青年创新人才类项目(2022KQNCX047);韩山师范学院2021年校级项目(XZ202105);韩山师范学院博士启动项目(QD202209);大健康产业校企共建协同创新中心(2022凯普专项,B22088)。

摘　　要：开发新型有机红光材料对于制备高效红光电致发光器件以及全彩显示具有重要意义。以三苯胺为电子给体(D),苯并噻二唑和2,6-二苯基-3,5-二氰基吡啶为电子受体(A),设计并合成了两个D-A-A´型红光材料TPA-BT-S和TPA-BT-D。作为电致发光器件的发光层,两个材料的电致发光波长分别为618 nm和610 nm,处于标准红光区;非掺杂器件的最大功率效率分别为11.9 lm·W^(-1)和12.0 lm·W^(-1);最大外量子效率为6.36%和5.32%,其中TPA-BT-S在器件中的激子利用率达到33.7%。实验结果表明,遵循杂化激发态机理并采用D-AA´型分子结构的设计策略具有可行性,这为开发高效红光材料提供了参考。The development of new organic red emitters is of great importance for OLEDs and full-color displays.Two D-A-A´type red emitters,named TPA-BT-S and TPA-BT-D,were designed and synthesized with triphenyl⁃amine as the electron donor(D),benzothiadiazole and 2,6-diphenyl-3,5-dicyanopyridine as the electron acceptors(A).In non-doped devices,the electroluminescent wavelengths of the two emitters are 618 nm and 610 nm,respec⁃tively,which are in the standard red light region.The maximum power efficiencies of the devices are 11.9 lm·W^(−1)and 12.0 lm·W^(−1),respectively;with maximum external quantum efficiencies of 6.36%and 5.32%,respectively.The exciton utilization of TPA-BT-S in the device reaches 33.7%.Those results demonstrate that emitters with hy⁃brid local and charge-transfer states characteristic and D-A-A´structure will exhibit high efficiency.Those provides a reference for the development of high-efficiency red emitters.

关 键 词：苯并噻二唑 红光材料 杂化激发态 发光二极管 

分 类 号：O482.31[理学—固体物理]