White emission from organic light emitting diodes based on energy down-convertion mechanisms

被引：33

作者：

Mazzeo, M

Pisignano, D

Favaretto, L

Sotgiu, G

Barbarella, G

Cingolani, R

Gigli, G

机构：

[1] Univ Lecce, NNL, INFM, Dipartimento Ingn Innovaz, I-73100 Lecce, Italy

[2] CNR, ISOF, I-40129 Bologna, Italy

来源：

SYNTHETIC METALS | 2003年 / 139卷 / 03期

关键词：

white OLED; oligothiophenes; Foerster energy transfer;

D O I：

10.1016/S0379-6779(03)00306-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Balanced white electroluminescence (EL) emission from binary organic blends was achieved via intermolecular down-convertion processes: the exciplex and the Foerster transfer mechanisms. This was obtained by combining a low electronic affinity (EA) molecule, a diamine derivative (TPD), with two high electronic affinity substituted oligothiophenes having high and low ionization potential (IP), respectively. Both the energy down-convertion mechanisms were exploited in two single active-layer organic light emitting devices, showing stable white emission, independent of the applied voltage. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：675 / 677

页数：3

共 12 条

[1] Bright, saturated, red-to-yellow organic light-emitting devices based on polarization-induced spectral shifts [J].