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Phenothiazinen-Dimesitylarylborane-Based Thermally Activated Delayed Fluorescence: High-Performance Non-doped OLEDs With Reduced Efficiency Roll-Off at High Luminescence.

ABSTRACT: We report a phenothiazinen-dimesitylarylborane thermally activated delayed fluorescence (TADF) molecule that exhibits high external quantum efficiency (EQE) in non-doped organic light-emitting diodes (OLEDs) at high luminescence. The non-doped 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 a high luminescence of 1,500 cd m-2 with small efficiency roll-off.

SUBMITTER: Tang X 

PROVIDER: S-EPMC6548864 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Phenothiazinen-Dimesitylarylborane-Based Thermally Activated Delayed Fluorescence: High-Performance Non-doped OLEDs With Reduced Efficiency Roll-Off at High Luminescence.

Tang Xiangyang X   Tao Yanchun Y   Liu Hui H   Liu Futong F   He Xin X   Peng Qiming Q   Li Jinyu J   Lu Ping P  

Frontiers in chemistry 20190529

We report a phenothiazinen-dimesitylarylborane thermally activated delayed fluorescence (TADF) molecule that exhibits high external quantum efficiency (EQE) in non-doped organic light-emitting diodes (OLEDs) at high luminescence. The non-doped 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<sup>-2</sup>. The EQE is still as high as 17.31% at a high luminescence of 1,500 cd m<sup>-2</sup> with small efficie  ...[more]

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