On-chain defect emission in electroluminescent polyfluorenes

J.M. Lupton; M.R. Craig; E.W. Meijer

doi:10.1063/1.1486482

On-chain defect emission in electroluminescent polyfluorenes

J.M. Lupton, M.R. Craig, E.W. Meijer

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Abstract

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

Original language	English
Pages (from-to)	4489-4491
Journal	Applied Physics Letters
Volume	80
Issue number	24
DOIs	https://doi.org/10.1063/1.1486482
Publication status	Published - 2002

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title = "On-chain defect emission in electroluminescent polyfluorenes",

abstract = "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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AU - Craig, M.R.

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N2 - 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

AB - 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

U2 - 10.1063/1.1486482

DO - 10.1063/1.1486482

M3 - Article

SN - 0003-6951

VL - 80

SP - 4489

EP - 4491

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

ER -

On-chain defect emission in electroluminescent polyfluorenes

Abstract

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