Interchain and intrachain emission branching in polymer light-emitting diode doped by organic molecules

被引：8

作者：

Krautz, D. ^{[1
]}

Lunedei, E. ^{[2
]}

Puigdollers, J. ^{[3
]}

Badenes, G. ^{[1
]}

Alcubilla, R. ^{[3
]}

Cheylan, S. ^{[1
]}

机构：

[1] ICFO, Barcelona 08860, Spain

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

[3] Univ Politecn Cataluna, Dept Ingn Elect, Barcelona 08034, Spain

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 03期

关键词：

electroluminescence; electron transport theory; fluorescence spectroscopy; light emitting diodes; organic semiconductors; polymers; LUMINESCENCE; PERFORMANCE; EFFICIENCY; BLEND;

D O I：

10.1063/1.3276271

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A blend of the polymer poly[2-(2-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV) and the electron-transport molecule tris-(8-hydroxyquinoline) aluminum (Alq(3)) has been investigated by means of electroluminescence and fluorescence spectroscopy, upon variation of the Alq(3) content in the blend. A decreased interchain emission is observed upon increasing Alq(3) content, due to lower packing of the MEH-PPV chains which leads to a reduction in the interchain interaction, excimer formation, and emission probability. A branching of MEH-PPV interchain and intrachain emissive contributions is clearly time resolved and analyzed as a function of the Alq(3) content. At high doping concentration, direct emission from Alq(3) molecules is observed.

引用

页数：3

共 12 条

[1] Organic light-emitting diodes based on a blend of poly[2-(2-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] and an electron transporting material [J].