Chemosorption-related shift of a photonic bandgap in photoconductive ZnO inverse opal

Worawut Khunsin, Sergei G. Romanov, Michael Scharrer, Larry K. Aagesen, Robert P.H. Chang, Clivia M.Sotomayor Torres

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Abstract

A change of up to 40% of the relative transmission at the photonic bandgap edge has been observed in photoconductive inverted ZnO opals under ultraviolet laser irradiation. This effect has been related to the irradiation-stimulated change of the refraction index of the photonic crystal. The desorption (chemosorption) of oxygen molecules on the surface of the ZnO backbone leading to destruction (formation) of a depletion layer at the ZnO surface has been suggested as the mechanism responsible for the slow variation of polarizability of the inverted ZnO opal.

Original languageEnglish
Pages (from-to)461-463
Number of pages3
JournalOptics Letters
Volume33
Issue number5
DOIs
Publication statusPublished - Mar 1 2008

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Khunsin, W., Romanov, S. G., Scharrer, M., Aagesen, L. K., Chang, R. P. H., & Torres, C. M. S. (2008). Chemosorption-related shift of a photonic bandgap in photoconductive ZnO inverse opal. Optics Letters, 33(5), 461-463. https://doi.org/10.1364/OL.33.000461