A thermally cured 9,9-diarylfluorene-based triaryldiamine polymer displaying high hole mobility and remarkable ambient stability

• DOI: 10.1039/b900977a
• Publication Date: 2009-04-22T08:30:19Z
• Authors: Chi-Yen Lin; Yu-Cheng Lin; Wen-Yi Hung; Ken-Tsung Wong; Raymond C. Kwong; Sean C. Xia; Yu-Hung Chen; Chih-I Wu
• Keywords: Photocurrent; Electron Mobility

We have synthesized and characterized a novel thermally polymerizable triaryldiamine monomer (VB-FNPD) possessing styrene-functionalized 9,9-diarylfluorene core used time-of-flight transient photocurrent techniques to investigate the hole transport properties of its solution-processed subsequently cured (170 °C) polymer films. This polymeric material exhibits non-dispersive behavior with high drift mobility (up 10−4 cm2V−1 s−1). The film displayed remarkable ambient stability, even when exposed air for one month. tested generated as in organic light-emitting diodes incorporating tris(8-hydroxyquinolate) aluminium (Alq3) emission electron layer. device exhibited maximum external quantum efficiency (ηex) 1.4%, significantly better than that prepared using corresponding model compound VB-model (ηex = 1.1%).