物理化学学报 >> 2013, Vol. 29 >> Issue (06): 13511351-1356.doi: 10.3866/PKU.WHXB201303281

材料物理化学 上一篇    下一篇

一种基于咔唑的新型磷光主体材料的合成及光电性能

杨婷婷1,2, 许慧侠1,2, 王华1,2, 苗艳勤1,2, 杜晓刚1,2, 景姝1,2, 许并社1,2   

  1. 1 太原理工大学材料界面科学与工程教育部重点实验室, 太原 030024;
    2 太原理工大学新材料工程技术中心, 太原 030024
  • 收稿日期:2012-10-22 修回日期:2013-03-28 发布日期:2013-05-17
  • 通讯作者: 许慧侠 E-mail:xuhuixia0824@163.com
  • 基金资助:

    教育部长江学者与创新团队发展项目(IRT0972); 国家国际科技合作专项(2012DFR50460); 国家自然科学基金(21071108, 60976018,21101111, 61274056, 61205179); 山西省自然科学基金(2010021023-2, 2011021022-2)和山西省科技攻关项目(20120321019)资助

Synthesis and Photoelectric Properties of a New Phosphorescent Host Material Based on Carbazole

YANG Ting-Ting1,2, XU Hui-Xia1,2, WANG Hua1,2, MIAO Yan-Qin1,2, DU Xiao-Gang1,2, JING Shu1,2, XU Bing-She1,2   

  1. 1 Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, P. R. China;
    2 Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
  • Received:2012-10-22 Revised:2013-03-28 Published:2013-05-17
  • Supported by:

    The project was supported by the Program for Changjiang Scholar and Innovation Research Team in University, China (IRT0972), International Science & Technology Cooperation Program of China (2012DFR50460), National Natural Science Foundation of China (21071108, 60976018, 21101111, 61274056, 61205179), Natural Science Foundation of Shanxi Province, China (2010021023-2, 2011021022-2), Key Scientific and Technological Project of Shanxi Province, China (20120321019).

摘要:

设计并合成了一种基于咔唑的新型的磷光主体材料, 即9-(6-(9-咔唑基)己基)咔唑(hCP), 对其结构及性能进行了表征. 研究结果表明: hCP分子中两个咔唑与烷基链是非共平面的, 由于长烷基链的缠绕, 因而具有较高的三线态能级(3.01 eV)和较高的玻璃化温度(93℃); 以hCP为主体材料, 与绿光磷光染料三(2-苯基吡啶)合铱(Ir(ppy)3)掺杂作为发光层, 制备了磷光电致发光器件, 其器件的最大电流效率为15.1 cd·A-1, 相对于4,4'-N,N'-二咔唑基联苯(CBP)为主体材料的参考器件, 显著提高了34.8%.

关键词: 咔唑, 有机磷光电致发光二极管, 主体材料

Abstract:

A new phosphorescent host material based on 9-[6-(9H-carbazol-9-yl)hexyl]-9H-carbazole (hCP) was designed and synthesized and its structure and properties were characterized. These investigations indicated that hCP possessed a twisted rigid structure, with the two carbazole units in a non-coplanar conformation leading to a higher triplet energy level (3.01 eV). hCP also possessed a high glass transition temperature (93℃). Electroluminescent devices were fabricated by doping the hCP host with the green- phosphorescent fac-tris(2-phenylpyridine)iridium(III) (Ir(ppy)3) as the light-emitting layer. Compared with devices employing the typical (4,4'-N,N'-dicarbazole)biphenyl) (CBP) as a host, the hCP host showed a 34.8% increase of current efficiency to 15.1 cd·A-1.

Key words: Carbazole, Phosphorescence organic light emitting device, Host material

MSC2000: 

  • O644