High-efficiency oligothiopene-based light-emitting diodes

被引：130

作者：

Gigli, G ^{[1
]}

Barbarella, G

Favaretto, L

Cacialli, F

Cingolani, R

机构：

[1] Univ Lecce, Ist Nazl Fis Mat, Dipartimento Ingn Innovaz, I-73100 Lecce, Italy

[2] CNR, Area Ric, ICoCEA, I-40129 Bologna, Italy

[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 04期

关键词：

D O I：

10.1063/1.124403

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report investigations of the photoluminescence (PL) and electroluminescence (EL) of a thiophene oligomer for which we have devised a variety of substitutions aimed at enhancing the solid-state efficiency. We find that the absolute PL quantum efficiency in the solid state is up 37% for both powders or spin-coated thin films of the compound. The material thus becomes competitive for applications in organic light-emitting diodes (LEDs). EL efficiencies up to 1.2 cd/A are demonstrated in LEDs prepared with indium-tin-oxide and Ca-Al electrodes. (C) 1999 American Institute of Physics. [S0003-6951(99)00430-1].

引用

页码：439 / 441

页数：3

共 16 条

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