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Proceedings Paper

Photonic quasi-crystal light emitting diodes: comparisons of device performance with pattern pitch
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Paper 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.

Paper Details

Date Published: 12 May 2010
PDF: 11 pages
Proc. SPIE 7713, Photonic Crystal Materials and Devices IX, 77130B (12 May 2010); doi: 10.1117/12.853796
Show Author Affiliations
Martin Tillin, Sharp Labs. of Europe Ltd. (United Kingdom)
Martin D. B. Charlton, Univ. of Southampton (United Kingdom)
Zheng Gong, Univ. of Strathclyde (United Kingdom)
Ali Z. Khokhar, Univ. of Glasgow (United Kingdom)
David Massoubre, Univ. of Strathclyde (United Kingdom)
Ian M. Watson, Univ. of Strathclyde (United Kingdom)
Erdan Gu, Univ. of Strathclyde (United Kingdom)
Martin D. Dawson, Univ. of Strathclyde (United Kingdom)
Faiz Rahman, Univ. of Glasgow (United Kingdom)
Nigel P. Johnson, Univ. of Glasgow (United Kingdom)
Douglas Macintyre, Univ. of Glasgow (United Kingdom)
Richard M. De La Rue, Univ. of Glasgow (United Kingdom)
Keith Parsons, MacDemid Autotype Ltd. (United Kingdom)
Sean Lin, Luxtaltek Corp. (Taiwan)


Published in SPIE Proceedings Vol. 7713:
Photonic Crystal Materials and Devices IX
Hernán R. Míguez; Sergei G. Romanov; Lucio Claudio Andreani; Christian Seassal, Editor(s)

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