An efficient yellow thermally activated delayed fluorescence emitter with universal applications in both doped and non-doped organic light-emitting diodes†,Materials Chemistry Frontiers

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An efficient yellow thermally activated delayed fluorescence emitter with universal applications in both doped and non-doped organic light-emitting diodes†
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2018-03-13 00:00:00 , DOI: 10.1039/c8qm00064f
Xiaojie Chen _{1,

2,

3,

4,

5} , Zhan Yang _{1,

2,

3,

4,

5} , Zongliang Xie _{1,

2,

3,

4,

5} , Juan Zhao _{1,

2,

3,

4,

5} , Zhiyong Yang _{1,

2,

3,

4,

5} , Yi Zhang _{1,

2,

3,

4,

5} , Matthew. P. Aldred _{1,

2,

3,

4,

5} , Zhenguo Chi _{1,

2,

3,

4,

5}

Affiliation

Thermally activated delayed fluorescence (TADF) emitters have aroused serious attention for their use in organic light-emitting diodes (OLEDs). However, TADF emitters providing both doped and non-doped OLEDs with high device performance are rare. In this work, we present a yellow TADF emitter (OPDPO) meeting the above requirements. The OPDPO-based doped OLEDs show a maximum external quantum efficiency (EQE) of 26.7%, which is amongst the highest ever reported for doped yellow TADF-based OLEDs. The EQE remains as high as 22.1% at a luminance of 1000 cd m⁻². Meanwhile, the OPDPO-based non-doped OLEDs afford a maximum EQE of 16.6% at a high luminance of 3600 cd m⁻², which is amongst the best performances of non-doped yellow TADF-based OLEDs. Moreover, simple and efficient white OLEDs are implemented by combining a blue conventional fluorescent emitter with either a doped or non-doped OPDPO emissive layer, confirming the universal applications of OPDPO in high-performance OLEDs.

中文翻译：

高效的黄色热激活延迟荧光发射器，在掺杂和非掺杂有机发光二极管中都有通用应用†

热活化延迟荧光（TADF）发射器因其在有机发光二极管（OLED）中的使用而引起了人们的严重关注。然而，提供具有高器件性能的掺杂和非掺杂的OLED的TADF发射极是罕见的。在这项工作中，我们提供了满足上述要求的黄色TADF发射器（OPDPO）。基于OPDPO的掺杂OLED的最大外部量子效率（EQE）为26.7％，这是有报道的基于掺杂黄色TADF的OLED的最高量子效率之一。在1000 cd m ^-2的亮度下，EQE保持高达22.1％。同时，基于OPDPO的非掺杂OLED在3600 cd m ^-2的高亮度下可提供16.6％的最大EQE。，这是非掺杂的基于黄色TADF的黄色OLED的最佳性能之一。此外，通过将蓝色常规荧光发射器与掺杂或未掺杂的OPDPO发光层结合在一起，可以实现简单有效的白色OLED，从而确认了OPDPO在高性能OLED中的普遍应用。

更新日期：2018-03-13

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