Development of Porous Antireflective Films on Borosilicate Glasses

Experiments were conducted to characterize the development of gradient‐index antireflective (GIAR) films formed on a phase‐separated alkali borosilicate glass. Solution chemistry, secondary‐ion mass spectrometry, Auger electron spectroscopy, weight‐loss, scanning electron microscopy, and specific su...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1983-01, Vol.66 (4), p.302-307
Main Authors: IQBAL, ASIF, DANFORTH, STEPHEN C., HAGGERTY, JOHN S.
Format: Article
Language:English
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Summary:Experiments were conducted to characterize the development of gradient‐index antireflective (GIAR) films formed on a phase‐separated alkali borosilicate glass. Solution chemistry, secondary‐ion mass spectrometry, Auger electron spectroscopy, weight‐loss, scanning electron microscopy, and specific surface area analyses were used to evaluate a proposed model for film formation. The results suggest that the film‐forming process is more complicated than proposed. For near‐optimum heat trcatments, the film‐formation acid treatment was virtually nonselective; only for much longer than optimum annealing times was selectivity evident. The graded‐index films may result from precipitation of dissolved glass. The analyses were complicated by major compositional variations existing in the as‐received glass.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1983.tb15719.x