High-Efficiency Deep-Blue Solution-Processed OLED Devices Enabled by New Dopant Materials

Saeyoung Oh

doi:10.3390/ma18102213

2025-05-10

DOI：10.3390/ma18102213

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摘要

En 中文

设计了两种蓝色荧光掺杂剂并成功合成，分别为5-(2,12-二叔丁基-5,9-二氧杂-13b-硼杂萘[3,2,1-de]蒽-7-基)-5H-苯并[b]咔唑（TDBA-Bz）和9-(2,12-二叔丁基-5,9-二氧杂-13b-硼杂萘[3,2,1-de]蒽-7-基)-9H-咔唑（TDBA-Cz）。在溶液状态和薄膜状态下，这两种发射体均表现出深蓝色发光特性。在溶液处理的有机发光二极管（OLEDs）中，作为掺杂材料的TDBA-Bz和TDBA-Cz分别显示出436 nm和413 nm的电致发光峰值。对应的CIE色坐标确定为TDBA-Bz为(0.181, 0.114)，TDBA-Cz为(0.167, 0.086)。以TDBA-Cz作为掺杂剂的溶液处理器件表现出7.25 cd/A的电流效率（CE）和6.45%的外量子效率（EQE），其效率高于使用TDBA-Bz的器件。特别地，在亮度为2000 cd/m²时，TDBA-Cz维持了4.81%的EQE，仅从其最大EQE略有下降。

Keyword:

OLED

solution process

dopant

TDBA

carbazole

期刊

Materials

IF:

3.2

论文数:

5.7W

被引数:

15.1W

机构

kyung hee university

学者数:

2.3W

论文数: 2.2W

被引数: 234

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