Stibnite inverse opal

Khokhar, A. Z., De La Rue, R. M. , Treble, B. M., McComb, D. W. and Johnson, N. P. (2008) Stibnite inverse opal. Micro and Nano Letters, 3(1), pp. 1-6. (doi:10.1049/mnl:20070059)

Full text not currently available from Enlighten.

Abstract

A 3D photonic crystal (PhC), synthetic opal, has been constructed by self-assembly of sub-micrometre silica spheres and designed for operation in the visible spectral range. Because of its low refractive index contrast (RIC), this PhC does not exhibit a full photonic band gap (PBG), but this property could be achieved by increasing sufficiently the RIC. It is not easy to find a high refractive index material that is transparent in the visible spectral range, but we report here on a method for producing 3D PhC structures with increased RIC, using incorporation of stibnite (Sb2S3) into a silica opal PhC. The template is infiltrated with the precursor (Sb[CS(NH2)(2)](3)CI3), with subsequent thermal decomposition at 600 degrees C to form Sb2S3 in the voids of the opal PhC. Formation of Sb2S3 and removal of silica spheres by a chemical etching process can produce a structure that exhibits a full PBG in the visible spectral range. The optical properties of the inverse Sb2S3 opal have been measured and compared with theoretical calculations

Item Type:Articles
Keywords:BANDGAP etching FABRICATION GROWTH INDEX LITHOGRAPHY OPTICAL-PROPERTIES photonic crystal PHOTONIC CRYSTALS SB2S3 self-assembly SPHERES THIN-FILMS
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Johnson, Dr Nigel and Khokhar, Dr Ali and De La Rue, Professor Richard
Authors: Khokhar, A. Z., De La Rue, R. M., Treble, B. M., McComb, D. W., and Johnson, N. P.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Micro and Nano Letters
ISSN:1750-0443

University Staff: Request a correction | Enlighten Editors: Update this record