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Nonradiative exciton energy transfer in hybrid organic-inorganic heterostructures

Nonradiative exciton energy transfer in hybrid organic-inorganic heterostructures
Nonradiative exciton energy transfer in hybrid organic-inorganic heterostructures
Nonradiative energy transfer from a GaAs quantum well to a thin overlayer of an infrared organic semiconductor dye is unambiguously demonstrated. The dynamics of exciton transfer are studied in the time domain by using pump-probe spectroscopy at the donor site and fluorescence spectroscopy at the acceptor site. The effect is observed as simultaneous increase in the population decay rate at the donor and of the rise time of optical emission at the acceptor sites. The hybrid configuration under investigation provides an alternative nonradiative, noncontact pumping route to electrical carrier injection that overcomes the losses imposed by the associated low carrier mobility of organic emitters.
carrier mobility, charge injection, dyes, excitons, fluorescence, gallium arsenide, III-V semiconductors, organic semiconductors, organic-inorganic hybrid materials, semiconductor heterojunctions, semiconductor quantum wells
1550-235X
193402-[4pp]
Chanyawadee, S.
859bf87d-c356-4935-ab66-e20f7a492dc9
Lagoudakis, P.G.
ea50c228-f006-4edf-8459-60015d961bbf
Harley, R.T.
54613031-f60f-45f4-9b20-e49bcfd53b77
Lidzey, D.G.
5d7d3f80-7bec-4d49-ac6c-8746d604f672
Henini, M.
dffaac17-caab-4a18-9eb6-c858d8bb1ed2
Chanyawadee, S.
859bf87d-c356-4935-ab66-e20f7a492dc9
Lagoudakis, P.G.
ea50c228-f006-4edf-8459-60015d961bbf
Harley, R.T.
54613031-f60f-45f4-9b20-e49bcfd53b77
Lidzey, D.G.
5d7d3f80-7bec-4d49-ac6c-8746d604f672
Henini, M.
dffaac17-caab-4a18-9eb6-c858d8bb1ed2

Chanyawadee, S., Lagoudakis, P.G., Harley, R.T., Lidzey, D.G. and Henini, M. (2008) Nonradiative exciton energy transfer in hybrid organic-inorganic heterostructures. Physical Review B, 77 (19), 193402-[4pp]. (doi:10.1103/PhysRevB.77.193402).

Record type: Article

Abstract

Nonradiative energy transfer from a GaAs quantum well to a thin overlayer of an infrared organic semiconductor dye is unambiguously demonstrated. The dynamics of exciton transfer are studied in the time domain by using pump-probe spectroscopy at the donor site and fluorescence spectroscopy at the acceptor site. The effect is observed as simultaneous increase in the population decay rate at the donor and of the rise time of optical emission at the acceptor sites. The hybrid configuration under investigation provides an alternative nonradiative, noncontact pumping route to electrical carrier injection that overcomes the losses imposed by the associated low carrier mobility of organic emitters.

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More information

Published date: 14 May 2008
Keywords: carrier mobility, charge injection, dyes, excitons, fluorescence, gallium arsenide, III-V semiconductors, organic semiconductors, organic-inorganic hybrid materials, semiconductor heterojunctions, semiconductor quantum wells
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 50848
URI: https://eprints.soton.ac.uk/id/eprint/50848
ISSN: 1550-235X
PURE UUID: 874a5fd9-3b7f-4795-a061-679996176655

Catalogue record

Date deposited: 12 Dec 2008
Last modified: 13 Mar 2019 20:49

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