Photonic Quasi-Crystal Light Emitting Diodes, - comparisons of device performance with pattern pitch
Photonic Quasi-Crystal Light Emitting Diodes, - comparisons of device performance with pattern pitch
In this paper we discuss theoretical modelling methods for the design of photonic crystal and photonic quasi-crystal (PQC) LEDs - and apply them to the analysis of the extraction enhancement performance and shaping of the emitted beam profile of PQC-LED structures. In particular we investigate the effect of the pitch of the PQC patterning, and consider the physical mechanisms giving rise to performance improvements. In addition, we examine the relative contributions to performance improvements from effective index reduction effects that alter the conditions for total internal reflection at the device air interface, and from photonic crystal scattering effects that give rise to radically improved extraction performance. Comparisons are made with the performance of recently fabricated devices.
Tillin, Martin
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Charlton, Martin
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Gong, Zheng
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Khokhar, Ali Z
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Massoubre, David
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Watson, Ian M
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Dawson, Martin D
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Rahman, Faiz
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Johnson, Nigel P
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De La Rue, Richard M
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Lin, Sean
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Tillin, Martin
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Charlton, Martin
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Gong, Zheng
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Khokhar, Ali Z
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Massoubre, David
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Watson, Ian M
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Dawson, Martin D
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Rahman, Faiz
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Johnson, Nigel P
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De La Rue, Richard M
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Lin, Sean
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Tillin, Martin, Charlton, Martin, Gong, Zheng, Khokhar, Ali Z, Massoubre, David, Watson, Ian M, Dawson, Martin D, Rahman, Faiz, Johnson, Nigel P, De La Rue, Richard M and Lin, Sean
(2010)
Photonic Quasi-Crystal Light Emitting Diodes, - comparisons of device performance with pattern pitch.
Proceedings of SPIE.
(Submitted)
Abstract
In this paper we discuss theoretical modelling methods for the design of photonic crystal and photonic quasi-crystal (PQC) LEDs - and apply them to the analysis of the extraction enhancement performance and shaping of the emitted beam profile of PQC-LED structures. In particular we investigate the effect of the pitch of the PQC patterning, and consider the physical mechanisms giving rise to performance improvements. In addition, we examine the relative contributions to performance improvements from effective index reduction effects that alter the conditions for total internal reflection at the device air interface, and from photonic crystal scattering effects that give rise to radically improved extraction performance. Comparisons are made with the performance of recently fabricated devices.
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SPIE-PE-2010_MC_edit2.doc
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Submitted date: 2010
Organisations:
Nanoelectronics and Nanotechnology
Identifiers
Local EPrints ID: 270975
URI: http://eprints.soton.ac.uk/id/eprint/270975
PURE UUID: 943b2673-e12d-4261-9b22-d585e23109db
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Date deposited: 04 May 2010 10:17
Last modified: 14 Mar 2024 09:19
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Contributors
Author:
Martin Tillin
Author:
Martin Charlton
Author:
Zheng Gong
Author:
Ali Z Khokhar
Author:
David Massoubre
Author:
Ian M Watson
Author:
Martin D Dawson
Author:
Faiz Rahman
Author:
Nigel P Johnson
Author:
Richard M De La Rue
Author:
Sean Lin
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