Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (07): 1556-1569.doi: 10.3866/PKU.WHXB201205043

• REVIEW • Previous Articles     Next Articles

Application of Fused-Heterocyclic Compounds in Red Phosphorescent Iridium(III) Complexes

WANG Ling-Xia, MEI Qun-Bo, YAN Fang, TIAN Bo, WENG Jie-Na, ZHANG Bin, HUANG Wei   

  1. Key Laboratory for Organic Electronic & Information Displays, Institute of Advanced Materials, Nanjing University of Posts & elecommunications, Nanjing 210046, P. R. China
  • Received:2012-03-12 Revised:2012-05-02 Published:2012-06-07
  • Contact: MEI Qun-Bo, HUANG Wei E-mail:iamqbmei@njupt.edu.cn; iamwhuang@njupt.edu.cn
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (973) (2009CB930601), National Natural Science Foundation of China (50803027, 50903001, 20905038), and Natural Science Fund for Colleges and Universities in Jiangsu Province, China (08KJD430020).

Abstract:

Organic light-emitting diodes (OLEDs) have attracted considerable attention during the last decade because of the potential advantages associated with their usage in full-color displays. Electroluminescent phosphorescent materials have also enjoyed similar levels of attention because of their excellent luminescent properties. The three primary colors, blue, green, and red, are essential for the practical application of phosphorescent complexes in flat-panel displays. Relative to the efficient green phosphorescent materials, red phosphorescent materials suffer many problems, including poor color purity, low efficiency, and low luminance, and the design of appropriate red colored materials therefore represents a significant challenge. Fused-heterocyclic compounds have been widely used in red phosphorescent iridium(III) complexes because of their high quantum efficiency, color adjustability, and balanced charge injection and migration. This review summarizes the development and application of fused-heterocyclic compounds in recent years in small molecule, dendrimer and polymeric red phosphorescent iridium(III) complexes. The influence of the molecular structures of iridium(III) complexes on the optical and electrical properties and device performances has also been described. Finally, a discussion of the prospect of developing fused-heterocyclic compounds in the red phosphorescent materials has also been provided.

Key words: Phosphorescent material, Iridium(III) complexes, Fused-heterocyclic compound, Dendrimer, Polymer

MSC2000: 

  • O644