On-chain defect emission in electroluminescent polyfluorenes

被引：188

作者：

Lupton, JM

Craig, MR

Meijer, EW

机构：

[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

[2] Eindhoven Univ Technol, Lab Macromol & Organ Chem, NL-5600 MB Eindhoven, Netherlands

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 24期

关键词：

D O I：

10.1063/1.1486482

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present time-resolved photoluminescence measurements on a range of poly- and oligofluorenes with different molecular weights in both dilute solution and thin films. The commonly observed parasitic broad green emission band, which has previously been attributed to an excimer, is identified in all solution and film samples and assigned to an on-chain emissive defect. By comparison of the luminescence decay in the solid state at different temperatures it is shown that, at room temperature, intramolecular relaxation is faster in these polyphenylenes than intermolecular exciton diffusion. (C) 2002 American Institute of Physics.

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页码：4489 / 4491

页数：3

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