Charge carrier transport in neat thin films of phosphorescent iridium complexes

被引：98

作者：

Matsusue, N ^{[1
]}

Suzuki, Y ^{[1
]}

Naito, H ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Dept Phys & Elect, Sakai, Osaka 5998531, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2005年 / 44卷 / 6A期

关键词：

iridium complexes; charge carrier transport; phosphorescence; CLED;

D O I：

10.1143/JJAP.44.3691

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The charge carrier transport properties of neat thin films of red-, green- and blue-phosphorescence Ir complexes have been investigated in terms of time-of-flight transient photocurrent measurement. Bis(2-(2'-benzo[4,5-a]thienyl)pyridinato-N,C-3')iridium(acetylacetonate) (btp(2)Ir(acac)) (red-phosphorescence emitter) and iridium(III) bis[(4,6-di-fluorophenyl)pyridinato-N,C-2']picolinate (FIrpic) (blue-phosphorescence emitter) thin films exhibit bipolar charge transport. In contrast, the electron and hole transit signals of fac-tris(2-phenylpyridine)iridium(III) (Ir(ppy)(3)) (green-phosphorescence emitter) thin films are unobservable. The charge carrier transport properties of thin films of an Ir-complex-doped 4,4'-N,N'-dicarbazolebiphenyl (CBP) and the appropriateness of FIrpic as a triplet-exciton and hole blocking layer are shown.

引用

页码：3691 / 3694

页数：4

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