Red electroluminescence from transparent PVK-dye films based on dipyrido[3,2-a:2′,3′-c]phenazine and Re(CO)3Cl-dipyrido[3,2-a:2′,3′-c]phenazine dyes

被引：46

作者：

David, G ^{[1
]}

Walsh, PJ ^{[1
]}

Gordon, KC ^{[1
]}

机构：

[1] Univ Otago, Dept Chem, Dunedin, New Zealand

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 383卷 / 3-4期

关键词：

D O I：

10.1016/j.cplett.2003.11.042

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

Light-emitting diodes based on dipyrido[3,2-a:2',3'-c]phenazine (dppz) and Re(CO)(3)Cl-dipyrido[3,2-a:2',3'-c]phenazine (Re(CO)(3)Cl(dppz)) dyes incorporated into a poly(N-vinylcarbazole) (PVK) host have been fabricated. The dppz dyes doped into PVK show PL spectra that have large Stokes shifts (more than 9000 cm(-1)), but the dppz emission does not appear in the EL spectra. The Re-based dyes show virtually no emission in the PL spectra when doped into PVK, however, the emission from the Re-based dyes dominates the EL spectra. This is because the Re-based dyes are able to transport efficiently hole and electron carriers leading to electronic excitation of the dye excited state through charge-carrier mechanisms. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：292 / 296

页数：5

共 28 条

[1]

Very high-efficiency green organic light-emitting devices based on electrophosphorescence [J].