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

Tillin, M. and Charlton, M.D.B. and Gong, Z. and Khokhar, A.Z. and Massoubre, D. and Watson, I.M. and Gu, E. and Dawson, M.D. and Rahman, F. and Johnson, N.P. and Macintyre, D. and De La Rue, R.M. and Parsons, K. and Lin, S. (2010) Photonic quasi-crystal light emitting diodes: comparisons of device performance with pattern pitch. Proceedings of SPIE the International Society for Optical Engineering, 7713. 77130B-1. ISSN 0277-786X (http://dx.doi.org/10.1117/12.853796)

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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.

ORCID iDs

Tillin, M., Charlton, M.D.B., Gong, Z., Khokhar, A.Z., Massoubre, D., Watson, I.M. ORCID logoORCID: https://orcid.org/0000-0002-8797-3993, Gu, E. ORCID logoORCID: https://orcid.org/0000-0002-7607-9902, Dawson, M.D. ORCID logoORCID: https://orcid.org/0000-0002-6639-2989, Rahman, F., Johnson, N.P., Macintyre, D., De La Rue, R.M., Parsons, K. and Lin, S.;
  • Item type:Article
    ID code:27678
    Dates:
    Date
    Event
    12 May 2010
    Published
    Keywords:photonic crystal LEDs, photonic quasi-crystal LEDs, light emitting diodes, modelling, pattern pitch, Optics. Light, Physics, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering, Applied Mathematics, Computer Science Applications
    Subjects:Science > Physics > Optics. Light
    Science > Physics
    Department:Faculty of Science > Physics > Institute of Photonics
    Depositing user: Miss Sharon Kelly
    Date deposited:08 Oct 2010 16:25
    Last modified:20 May 2023 03:45
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/27678
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