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Highly Efficient TADF Polymer Electroluminescence With Reduced Efficiency Roll-off via Interfacial Exciplex Host Strategy

Xingdong Lin, Yunhui Zhu, Baohua Zhang, Xiaofei Zhao, Bing Yao, Yanxiang Cheng, Zhanguo Li, Yi Qu, Zhiyuan Xie

ACS Appl Mater Interfaces. 2018 Jan 10;10(1):47-52.

PMID: 29283240

Abstract:

Solution-processed organic light-emitting diodes (s-OLED) consisting of TAPC/TmPyPB interfacial exciplex host and polymer PAPTC TADF emitter are prepared, simultaneously displaying ultralow voltages (2.50/2.91/3.51/4.91 V at luminance of 1/100/1000/1000 cd m-2), high efficiencies (14.9%, 50.1 lm W-1), and extremely low roll-off rates (J50 of 63.16 mA cm-2, L50 of ca. 15000 cd m-2). Such performance is distinctly higher than that of pure-PAPTC s-OLED. Compared to pure-PAPTC, the advanced emissive layer structure of TAPC:PAPTC/TmPyPB is unique in much higher PL quantum yield (79.5 vs 36.3%) and nearly 4-fold enhancement in kRISC of the PAPTC emitter to 1.48 × 107 s-1.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP921205030 TmPyPB TmPyPB 921205-03-0 Price
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