Kang Soo Kyung, Woo Jeongkyu, Han Ju Hee, Kim Ki Ju, Lee Hakjun, Kim Young Kwan, Yoon Seung Soo
Department of Chemistry, Sungkyunkwan University, Suwon, Kyunggi-do 440-746, South Korea.
Department of Information Display, Hongik University, Seoul, 121-791, South Korea.
J Nanosci Nanotechnol. 2020 Nov 1;20(11):6683-6687. doi: 10.1166/jnn.2020.18774.
In this study, we designed and synthesized two phosphorescent emitting materials based on tetradentate pyridine-containing ligands. Their photophysical properties were examined for OLEDs and multilayer devices using these materials were fabricated in the following sequence; ITO (180 nm)/4,4',4″-Tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA) (30 nm)/,'-di(1-naphthyl)-,'-diphenyl-1,1'-biphenyl)4,4'-diamine (NPB) (20 nm)/Tris(4-carbazoyl-9-ylphenyl)amine (TCTA) (10 nm)/4,4'-Bis(-carbazolyl)-1,1'-biphenyl(CBP): 5, 8, 15% Platinum (II) complexes (20 nm)/1,3,5-Tris(1-Phenyl-1-benzimidazol-2-yl)benzene) (TPBi) (40 nm)/Liq (2 nm)/Al (100 nm). In particularly, a device using Platinum (II) complex based on A/-(3,5-di-tert-butylphenyl)-6-phenyl--(6-phenylpyridin-2-yl)pyridin-2-amine ligand showed the efficient emission, with luminous efficiency, power efficiency, and external quantum efficiency, and the Commission International de LEclairge (CIE) coordinates of 29.29 cd/A, 9.37 lm/W, 8.66% at 20 mA/cm2, and (0.32, 0.62) at 8.0 V, respectively.
在本研究中，我们基于含四齿吡啶配体设计并合成了两种磷光发射材料。研究了它们在有机发光二极管（OLED）中的光物理性质，并按以下顺序制备了使用这些材料的多层器件；氧化铟锡（ITO，180纳米）/4,4',4″-三[2-萘基（苯基）氨基]三苯胺（2-TNATA，30纳米）/N,N'-二（1-萘基）-N,N'-二苯基-1,1'-联苯-4,4'-二胺（NPB，20纳米）/三（4-咔唑基-9-基苯基）胺（TCTA，10纳米）/4,4'-双（咔唑-9-基）-1,1'-联苯（CBP）：5%、8%、15%铂（II）配合物（20纳米）/1,3,5-三（1-苯基-1-苯并咪唑-2-基）苯（TPBi，40纳米）/锂（Liq，2纳米）/铝（Al，100纳米）。特别地，使用基于A/-(3,5-二叔丁基苯基)-6-苯基-'-（6-苯基吡啶-2-基）吡啶-2-胺配体的铂（II）配合物的器件显示出高效发射，在20毫安/平方厘米时的发光效率、功率效率和外量子效率分别为29.29坎德拉/安培、9.37流明/瓦、8.66%，在8.0伏时的国际照明委员会（CIE）坐标分别为（0.32，0.62）。
