Phosphorescent Iridium Complexes for OLEDs Based on 1-Phenylpyrazole Ligands with Fluorine and Methyl Moieties

Bulletin of the Korean chemical society

Eun Jae Na¹  Seung Soo Yoon¹  Kum Hee Lee¹  Ji Young Song¹  Seok Jae Lee¹  Seong Kyu Kim¹  Young Kwan Kim¹  Dong Whan Lim¹ 

关键词: Phosphorescence;    Iridium complex;    Phenylpyrazole ligand;    White OLED;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A series of phosphorescent iridium(III) complexes 1-4 based on phenylpyrazole were synthesized and their photophysical properties were investigated. To evaluate their electroluminescent properties, OLED devices with the structure of ITO/NPB/mCP: 8% Iridium complexes (1-4)/TPBi/Liq/Al were fabricated. Among those, the device with 3 showed the most efficient white emission with maximum luminance of 100.6 cd/m2 at 15 V, maximum luminous efficiency of 1.52 cd/A, power efficiency of 0.71 lm/W, external quantum efficiency of 0.59%, and CIE coordinates of (0.35, 0.40) at 15.0 V, respectively.

【 授权许可】

Unknown