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Published March 15, 2010 | Published
Journal Article Open

Influence of annealing conditions on the optical and structural properties of spin-coated As_2S_3 chalcogenide glass thin films

Abstract

Spin-coating of chalcogenide glass is a low-cost, scalable method to create optical grade thin films, which are ideal for visible and infrared applications. In this paper, we study the influence of annealing on optical parameters of As_2S_3 films by examining UV-visible and infrared spectroscopy and correlating the results to changes in the physical properties associated with solvent removal. Evaporation of excess solvent results in a more highly coordinated, denser glass network with higher index and lower absorption. Depending on the annealing temperature and time, index values ranging from n = 2.1 to the bulk value (n = 2.4) can be obtained, enabling a pathway to materials optimization.

Additional Information

© 2010 Optical Society of America. Received 13 Oct 2009; revised 13 Feb 2010; accepted 16 Feb 2010; published 3 Mar 2010. This work is supported by the National Science Foundation under Grant No. EEC-0540832. The authors also wish to thank K. Richardson for valuable discussion.

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August 19, 2023
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