Efficient blue thermally activated delayed fluorescent emitters based on a boranaphtho[3,2,1-de]anthracene acceptor
作者:Ranran Pei、He Liu、Changjiang Zhou、Jingsheng Miao、Chuluo Yang
DOI:10.1039/d1tc04699c
日期:——
inter-system crossing constant (kRISC) of 1.52 × 106 s−1 is achieved by emitter MH without phenyl decoration. Benefitting from their high PLQYs as blue emitters, the doped organic light-emitting diodes (OLEDs) based on these compounds achieve attractive EL performances. The blue-emitting OLEDs with CIE (0.141. 0.215) based on MH exhibits a maximum external quantum efficiency (EQEmax) of 23.9%, current efficiency
通过结合硼萘[3,2,1-脱]蒽(BO)受体(A)和螺-吖啶-芴供体(D),开发了一系列蓝色热激活延迟荧光(TADF)发射体。诱导不同的苯基取代以理解结构-性质关系。已详细进行了热、光物理、电化学和电致发光 (EL) 特性的系统表征。光物理分析表明,这些 D-A 型发射器具有良好的 TADF 特性,光致发光量子产率高达 99%。1.52 × 10 6 s -1 的高反向系统间交叉常数 ( k RISC )由发射极 MH 实现,没有苯基装饰。受益于它们作为蓝色发射器的高 PLQY,基于这些化合物的掺杂有机发光二极管 (OLED) 实现了有吸引力的 EL 性能。基于 MH 的 CIE (0.141. 0.215) 蓝色发光 OLED 的最大外部量子效率 (EQE max ) 为 23.9%,电流效率 (CE max ) 为 42.9 cd A -1和功率效率 (PE max ) 为 42.1 lm
ORGANIC ELECTROLUMINESCENCE DEVICE AND POLYCYCLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
申请人:Samsung Display Co., Ltd.
公开号:US20190214585A1
公开(公告)日:2019-07-11
An organic electroluminescence device and a polycyclic compound used for the organic electroluminescence device are provided. The polycyclic compound according to an embodiment of the inventive concept is represented by Formula 1. In Formula 1, Y is B, P═O, or P═S, and X is SiR
3
R
4
, or GeR
5
R
6
. At least one of R
1
or R
2
is NAr
2
Ar
3
.