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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Chem. | doi: 10.3389/fchem.2019.00373

Phenothiazinen-Dimesitylarylborane based Thermally Activated Delayed Fluorescence: High Performance Nondoped OLEDs with Reduced Efficiency Roll-Off at High Luminescence

  • 1State Key Laboratory of Supramolecular Structure and Materials, Jilin University, China
  • 2Key Laboratory of Flexible Electronics, Institute of Advanced Materials, Nanjing Tech University, China

We report a phenothiazinen-dimesitylarylborane thermally activated delayed fluorescence molecule that exhibits high external quantum efficiency (EQE) in nondoped organic light emitting diodes (OLEDs) at high luminescence. The nondoped device shows green electroluminescence with an emission peak of 540 nm and a maximum EQE of 19.66% obtained at a luminescence of ~ 170 cd m-2. The EQE is still as high as 17.31% at high luminescence of 1500 cd m-2 with small efficiency roll-off.

Keywords: Thermally activated delayed fluorescence, OLEDs, Nondoped device, High efficiency, Low efficiency roll-off

Received: 31 Jan 2019; Accepted: 06 May 2019.

Edited by:

Lian Duan, Tsinghua University, China

Reviewed by:

Junqiao Ding, Changchun Institute of Applied Chemistry (CAS), China
Xin X. Ban, Huaihai Institute of Technology, China
Yanqin Miao, Taiyuan University of Technology, China  

Copyright: © 2019 Tang, Tao, Liu, Liu, He, Peng, Li and Lu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Ping Lu, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, Jilin Province, China, lup@jlu.edu.cn