Photoluminescence modification by a high-order photonic band with abnormal dispersion in ZnO inverse opal

Heeso Noh, Michael Scharrer, Mark A. Anderson, Robert P. H. Chang, Hui Cao

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Abstract

We measured the angle- and polarization-resolved reflection and photoluminescence spectra of ZnO inverse opals. Significant enhancement of spontaneous emission is observed. The enhanced emission not only has good directionality but can also be linearly polarized. A detailed theoretical analysis and numerical simulation reveal that such enhancement is caused by the abnormal dispersion of a high-order photonic band. The frozen mode at a stationary inflection point of a dispersion curve can strongly modify the intensity, directionality, and polarization of spontaneous emission.

Original languageEnglish
Article number115136
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number11
DOIs
Publication statusPublished - Mar 27 2008

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ASJC Scopus subject areas

  • Condensed Matter Physics

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