Efficient single-layer yellow-light emitting diodes with ladder-type poly(p-phenylene)/poly(decyl-thiophene) blends

被引：40

作者：

List, EJW

Holzer, L

Tasch, S

Leising, G

Scherf, U

Müllen, K

Catellani, M

Luzzati, S

机构：

[1] Graz Tech Univ, Inst Festkorperphys, A-8010 Graz, Austria

[2] Max Planck Inst Polymerforsch, Mainz, Germany

[3] CNR, Ist Chim Macromol, I-20133 Milan, Italy

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 109卷 / 07期

关键词：

semiconductors; luminescence;

D O I：

10.1016/S0038-1098(98)00586-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present the realisation of efficient polymer light emitting diodes (PLEDs) with yellow emission in a single-layer configuration. We found that the external electroluminescence-quantum efficiencies of PLEDs made of a blend of a blue emitting laddertype poly(p-phenylene) (m-LPPP) and small amounts of an orange emitting poly(decyl-thiophene) (PDT) are significantly improved to 4.2% compared with PLEDs fabricated of pure m-LPPP (2%). In this paper, electroluminescence and photoluminescence properties of different PLEDs consisting of m-LPPP and different amounts of PDT are compared. The results are discussed in terms of excitation energy transfer of Forster type and charge transfer. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：455 / 459

页数：5

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