title: Influence of annealing conditions on the optical and structural properties of spin-coated As(2)S(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(2)S(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.
authors.affiliation: Department of Electrical Engineering and Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ 08544, USA.
authors.forename: Shanshan
authors.initials: S
authors.lastname: Song
authors.forename: Janesha
authors.initials: J
authors.lastname: Dua
authors.forename: Craig B
authors.initials: CB
authors.lastname: Arnold
mesh_terms: D018011:Chalcogens / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D006358:Hot Temperature; D008422:Materials Testing; D008567:Membranes, Artificial; D012031:Refractometry; D013499:Surface Properties
chemical_list: D018011:Chalcogens; D008567:Membranes, Artificial