Amorphous molecular materials:: charge transport in the glassy state of N,N′-di(biphenylyl)-N,N′-diphenyl-[1, 1′-biphenyl]-4,4′-diamines

被引：33

作者：

Okumoto, K ^{[1
]}

Wayaku, K ^{[1
]}

Noda, T ^{[1
]}

Kageyama, H ^{[1
]}

Shirota, Y ^{[1
]}

机构：

[1] Osaka Univ, Fac Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan

来源：

SYNTHETIC METALS | 2000年 / 111卷

关键词：

charge transport; hole drift mobility; amorphous molecular materials; 1,1 '-biphenyl]-4,4 '-diamine derivative;

D O I：

10.1016/S0379-6779(99)00421-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Charge transport in the glassy state of a new family of amorphous molecular materials, N,N'-di(biphenyl-2-yl)-N, N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (o-BPD), N,N'-di(biphenyl-3-yl)-N, N'-diphenyl-[1,1'-biphenyl]-4,Q-diamine (m-BPD), and N, N'-di(biphenyl-4-yl)N, N'-diphenyl-[1, 1'-biphenyl]-4,4'-diamine (p-BPD), has been studied. It was found that the molecular glass of p-BPD exhibits a high hole drift mobility of 1.0 x 10(-3) cm(2)V(-1)s(-1) at an electric field of 1.0 X 10(5) Vcm(-1) at 293 K and that the hole drift mobility of m-BPD is more than one-order of magnitude smaller than those of o- and p-BPD. The analysis of the electric-field and temperature dependencies of the drift mobilities in terms of the disorder formalism shows that the difference in energetic disorder is responsible for the difference in the drift mobilities of these materials. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：473 / 476

页数：4

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