首页> 外文期刊>Synthetic Metals >Synthesis of a dibenzothiophene/carboline/carbazole hybrid bipolar host material for green phosphorescent OLEDs
【24h】

Synthesis of a dibenzothiophene/carboline/carbazole hybrid bipolar host material for green phosphorescent OLEDs

机译:用于绿色磷光OLED的二苯并噻吩/咔啉/咔唑杂化双极性主体材料的合成

获取原文
获取原文并翻译 | 示例
           

摘要

A bipolar host material for green phosphorescent organic light-emitting diodes (OLEDs) was designed and synthesized through a combination of dibenzothiophene, alpha-carboline, and carbazole (DTCC) moieties. The synthesized host material showed a sufficient HOMO/LUMO bandgap (3.49 eV) and triplet energy (2.67 eV) for green emitting bis[2-(2-pyridinyl-N)phenyl-C] (acetylacetonato) iridium(III) [Ir (ppy)(2)(acac)]. From the results of a single charge device for DTCC, the hole current density of DTCC was similar to the electron current density, indicating that DTCC possesses bipolar charge transport properties, confirming its bipolar nature and thus its applicability as the host of PHOLED. Thus, the DTCC host showed efficient energy transfer to the Ir(ppy)(2)(acac) dopant in the device. A maximum external quantum efficiency of 18.9% was obtained using DTCC as the host material and the color coordinate of the green PHOLED was (CIEx,y= 0.34, 0.62) at 10% doping concentration. (C) 2015 Elsevier B.V. All rights reserved.
机译:通过结合二苯并噻吩,α-咔啉和咔唑(DTCC)部分,设计并合成了用于绿色磷光有机发光二极管(OLED)的双极性主体材料。合成的主体材料显示出足够的HOMO / LUMO带隙(3.49 eV)和三重态能量(2.67 eV),用于绿色发射双[2-(2-吡啶基-N)苯基-C](乙酰丙酮基)铱(III)[Ir( ppy)(2)(acac)]。从用于DTCC的单个电荷器件的结果来看,DTCC的空穴电流密度与电子电流密度相似,这表明DTCC具有双极性电荷传输性质,从而确认了其双极性性质,因此证明了其作为PHOLED主体的适用性。因此,DTCC主机显示出有效的能量转移到设备中的Ir(ppy)(2)(acac)掺杂剂。使用DTCC作为主体材料,最大外部量子效率为18.9%,在10%的掺杂浓度下,绿色PHOLED的色坐标为(CIEx,y = 0.34,0.62)。 (C)2015 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号