The University of Southampton
University of Southampton Institutional Repository

Generalized rate-equation analysis of excitation exchange between silicon nanoclusters and erbium ions

Generalized rate-equation analysis of excitation exchange between silicon nanoclusters and erbium ions
Generalized rate-equation analysis of excitation exchange between silicon nanoclusters and erbium ions
We discuss the use of rate equations to analyze the sensitization of erbium luminescence by silicon nanoclusters. In applying the general form of second-order coupled rate-equations to the Si nanocluster-erbium system, we find that the photoluminescence dynamics cannot be described using a simple rate equation model. Both rise and fall times exhibit a stretched exponential behavior, which we propose arises from a combination of a strongly distance-dependent nanocluster-erbium interaction, along with the finite size distribution and indirect band gap of the silicon nanoclusters. Furthermore, the low fraction of erbium ions that can be excited nonresonantly is a result of the small number of ions coupled to nanoclusters.
1550-235X
035318-[9pp]
Kenyon, A.J.
e2e3bbbc-23b6-4c67-832d-9a16abf4aa31
Wojdak, M.
b4d7a1f8-6bf7-4c5e-b793-7362e97e7727
Ahmad, I.
2b2d5b11-2eb0-4846-ba64-face6a2b9235
Loh, W.H.
ad865cd3-2580-4afa-8607-1c1d30cf8312
Oton, C.J.
cc559bbe-1b21-4aa7-81fc-63ba4a5a94c9
Kenyon, A.J.
e2e3bbbc-23b6-4c67-832d-9a16abf4aa31
Wojdak, M.
b4d7a1f8-6bf7-4c5e-b793-7362e97e7727
Ahmad, I.
2b2d5b11-2eb0-4846-ba64-face6a2b9235
Loh, W.H.
ad865cd3-2580-4afa-8607-1c1d30cf8312
Oton, C.J.
cc559bbe-1b21-4aa7-81fc-63ba4a5a94c9

Kenyon, A.J., Wojdak, M., Ahmad, I., Loh, W.H. and Oton, C.J. (2008) Generalized rate-equation analysis of excitation exchange between silicon nanoclusters and erbium ions. Physical Review B, 77 (3), 035318-[9pp]. (doi:10.1103/PhysRevB.77.035318).

Record type: Article

Abstract

We discuss the use of rate equations to analyze the sensitization of erbium luminescence by silicon nanoclusters. In applying the general form of second-order coupled rate-equations to the Si nanocluster-erbium system, we find that the photoluminescence dynamics cannot be described using a simple rate equation model. Both rise and fall times exhibit a stretched exponential behavior, which we propose arises from a combination of a strongly distance-dependent nanocluster-erbium interaction, along with the finite size distribution and indirect band gap of the silicon nanoclusters. Furthermore, the low fraction of erbium ions that can be excited nonresonantly is a result of the small number of ions coupled to nanoclusters.

Text
F.pdf - Other
Restricted to Repository staff only

More information

Published date: 15 January 2008

Identifiers

Local EPrints ID: 50688
URI: http://eprints.soton.ac.uk/id/eprint/50688
ISSN: 1550-235X
PURE UUID: da0556bc-a5d3-49f0-b06a-5ca1ae9f51a7

Catalogue record

Date deposited: 13 Mar 2008
Last modified: 08 Jan 2022 03:58

Export record

Altmetrics

Contributors

Author: A.J. Kenyon
Author: M. Wojdak
Author: I. Ahmad
Author: W.H. Loh
Author: C.J. Oton

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×