A thermally cured 9,9-diarylfluorene-based triaryldiamine polymer displaying high hole mobility and remarkable ambient stability
Resource
Journal of Materials Chemistry 19: 3618-3623
Journal
Journal of Materials Chemistry
Journal Volume
19
Journal Issue
22
Pages
3618-3623
Date Issued
2009
Author(s)
Abstract
We have synthesized and characterized a novel thermally polymerizable triaryldiamine monomer (VB-FNPD) possessing a styrene-functionalized 9,9-diarylfluorene core and have used time-of-flight transient photocurrent techniques to investigate the hole transport properties of its solution-processed and subsequently thermally cured (170 °C) polymer films. This novel polymeric material exhibits non-dispersive hole transport behavior with a high hole drift mobility (up to 10-4 cm2 V -1 s-1). The film displayed remarkable ambient stability, even when exposed to air for one month. We tested the thermally generated polymer film as a hole transport material in organic light-emitting diodes incorporating tris(8-hydroxyquinolate) aluminium (Alq3) as the emission and electron transport layer. The device exhibited a maximum external quantum efficiency (ηex) of 1.4%, significantly better than that of the device prepared using the corresponding model compound VB-model (ηex = 1.1%). © 2009 The Royal Society of Chemistry.
Other Subjects
Ambient stability; Electron transport layers; External quantum efficiency; Functionalized; Hole drift-mobility; Hole transport materials; Hole transports; Model compound; Polymeric material; Solution-processed; Time of flight; Transient photocurrents; Curing; Functional polymers; Hole mobility; Light emitting diodes; Organic light emitting diodes (OLED); Plastic films; Polymers; Styrene; Transport properties; Polymer films
Type
journal article
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