Kang Hyun Ju, Lee Kum Hee, Kim Heo Mim, Seo Ji Hyun, Kim Young Kwan, Yoon Seung Soo
Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
J Nanosci Nanotechnol. 2012 May;12(5):4248-51. doi: 10.1166/jnn.2012.5924.
We have designed and synthesized four orange-red phosphorescent Ir(III) complexes based on the benzoylphenylpyridine ligand with fluorine and trifluoromethyl substitution. Multilayered OLEDs were fabricated using these complexes as dopant materials. Particularly, by using 1 as a dopant in the emitting layer, a highly efficient orange-red OLED was fabricated, showing a maximum luminance of 10410 cd/m2 at 10 V, a luminous efficiency of 17.47 cd/A, a power efficiency of 7.19 Im/W, an external quantum efficiency of 6.27% at 20 mA/cm2, respectively, and CIE(x,y) coordinates of (0.51, 0.48) at 10 V. Furthermore, a red OLED using dopant 2, with CIE(x,y) coordinates of (0.61, 0.39), exhibited a maximum luminance of 5797 cd/m2 at 10 V, a luminous efficiency of 11.43 cd/A at, a power efficiency of 4.12 Im/W, and an external quantum efficiency of 6.62% at 20 mA/cm2, respectively.
我们基于具有氟和三氟甲基取代的苯甲酰基苯基吡啶配体设计并合成了四种橙红色磷光铱（III）配合物。使用这些配合物作为掺杂材料制备了多层有机发光二极管（OLED）。特别地，通过在发光层中使用1作为掺杂剂，制备了一种高效的橙红色OLED，在10 V时最大亮度为10410 cd/m²，发光效率为17.47 cd/A，功率效率为7.19 Im/W，在20 mA/cm²时外量子效率为6.27%，在10 V时CIE（x，y）坐标为（0.51，0.48）。此外，使用掺杂剂2的红色OLED，CIE（x，y）坐标为（0.61，0.39），在10 V时最大亮度为5797 cd/m²，发光效率为11.43 cd/A，功率效率为4.12 Im/W，在20 mA/cm²时外量子效率为6.62%。
