铱
荧光粉
有机发光二极管
量子效率
材料科学
光电子学
甲苯
制作
光化学
二极管
蓝光
化学
纳米技术
有机化学
图层(电子)
催化作用
替代医学
病理
医学
作者
Hsin‐Hung Kuo,Ze‐Lin Zhu,Chun‐Sing Lee,Yi-Kuang Chen,Shih-Hung Liu,Pi‐Tai Chou,Alex K.‐Y. Jen,Yun Chi
标识
DOI:10.1002/advs.201800846
摘要
Sky-blue and blue-emitting, carbazolyl functionalized, bis-tridentate Ir(III) phosphors Cz-1-Cz-3 with bright emission and short radiative lifetime are successfully synthesized in a one-pot manner. They exhibit very high photostability against UV-vis irradiation in degassed toluene, versus both green and true-blue-emitting reference compounds, i.e., fac-[Ir(ppy)3] and mer-[Ir(pmp)3]. Organic light-emitting diodes (OLEDs) based on Cz-2 exhibit maximum external quantum efficiency (EQE) of 21.6%, EQE of 15.1% at 100 cd m-2, and with CIE x,y coordinates of (0.17, 0.25). This study provides a conceptual solution to the exceedingly stable and efficient blue phosphor. It is promising that long lifespan blue OLED based on these emitters can be attained with further engineering of devices suitable for commercial application.
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