Efficient excimer-based white OLEDs with reduced efficiency roll-off

被引：18

作者：

Wu, Jiang ^{[1
]}

Ameri, Lydia ^{[1
]}

Cao, Linyu ^{[1
]}

Li, Jian ^{[1
]}

机构：

[1] Arizona State Univ, Dept Mat Sci & Engn, Tempe, AZ 85284 USA

来源：

APPLIED PHYSICS LETTERS | 2021年 / 118卷 / 07期

关键词：

All Open Access; Green;

D O I：

10.1063/5.0043955

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A tetradentate Pt(II) complex, Pt2O2-p2m, which exhibits both efficient monomer and excimer emission, was synthesized. Through rational device design to broaden the recombination zone, an OLED device employing Pt2O2-p2m demonstrated an impressively high peak external quantum efficiency (EQE) of 21.5% and a warm white emission with a color rendering index of 71 and Commission Internationale de L'Eclairage coordinates of (0.409, 0.458). Moreover, a reduced efficiency roll-off was also observed to retain high EQE values of 20% EQE at 1000cd/m(2) and 17% EQE at 5000cd/m(2), and an LT70 (time to 70% initial luminance) was estimated to be over 150 h at 1000cd/m(2) under constant operation at accelerated driving conditions.

引用

页数：5

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