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Proceedings Paper

Production of angular-selective films by interdiffusion for novel spectral responses
Author(s): A. K. Moazzem M. Hossain; Geoffrey B. Smith
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Paper Abstract

Aluminum is a good candidate for both solar and visible angular selectivity if used in metal/high refractive index insulator combinations, but angular selectivity was not observed in Al/TiO2 films prepared in traditional co- deposition techniques. A new approach, deposition of a thin oblique Al layer, then oblique TiO2, and later annealing in vacuum, was attempted and good angular selectivity observed in this material combination. In contrast to other angular selective films, these films showed angular selectivity in s-polarized light for the plane of incidence parallel to the TiO2 columns. Spectral transmittance plots show the effects of Al content and annealing temperature of angular selectivity. SEM micrographs confirm the oblique columnar structure of the annealed complex, and inter-diffusion of Al through the TiO2 columns.

Paper Details

Date Published: 11 October 1999
PDF: 8 pages
Proc. SPIE 3789, Solar Optical Materials XVI, (11 October 1999); doi: 10.1117/12.367564
Show Author Affiliations
A. K. Moazzem M. Hossain, Univ. of Technology/Sydney (Australia)
Geoffrey B. Smith, Univ. of Technology/Sydney (Australia)

Published in SPIE Proceedings Vol. 3789:
Solar Optical Materials XVI
Carl M. Lampert; Claes-Goeran Granqvist, Editor(s)

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