Organic electroluminescence from singlet and triplet exciplexes: Exciplex electrophosphorescent diode

被引：47

作者：

Cocchi, M

Virgili, D

Sabatini, C

Kalinowski, J

机构：

[1] Gdansk Tech Univ, Dept Mol Phys, PL-80952 Gdansk, Poland

[2] CNR, Inst Organ Synthesis & Photoreactiv, CNR, ISOF, I-40129 Bologna, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 421卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2006.01.082

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 ; 081704 ;

摘要：

We have observed emission from singlet and triplet exciplexes in electron donor (D)-acceptor (A) organic electroluminescent systems. The exciplex singlet-to-triplet fraction appears to be a function of electronic properties of the (D-A) complex molecular components and applied electric field. The fluorescence from exciplex singlets could be eliminated using a heavy atom (Gd)-substituted acceptor molecule allowing the efficient intersystem crossing of singlet into triplet exciplex states. By this a pure exciplex electrophosphorescent diode has been realized. These findings are of importance for the understanding of the exciplex formation mechanism and, thus, for material choice in device applications. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：351 / 355

页数：5

共 16 条

[1] Highly efficient phosphorescent emission from organic electroluminescent devices [J].