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Physics & Astronomy
This paper has met the requirements for Distinguished Honors
Chalcogenide glasses have gained attention in recent years for their ability to transmit light throughout most of the infrared spectrum and for their ability to alter their structural conformation from amorphous to crystalline as a result of heat exposure. Because the physical properties of the glass change with structural differences, these glasses are used in a variety of optical devices and lenses. Additionally, because they change conformation as a result of heat exposure, these glasses are particularly useful for read-write applications such as re-writable compact disks and computational random access memory cards. The cost and weight of these glasses however prevent them from being used in more applications. Here, we developed a novel approach for the application of thin-films of chalcogenide glass on flat and curved lens substrates using dip-coating procedures in solutions of chalcogenide glass dissolved in Ethylenediamine and Ethanethiol. In order to produce optical quality films, the homogeneous evaporation of solution components must be maintained to prevent precipitation of glass. Using FTIR analysis, we determined that Ethanethiol preferentially evaporates from mixtures, mostly within the first hour of dipping. However, we identified a solution that allows for the maintained dissolution of glass. Through this process, we developed refined dipping procedures to ensure a constant glass-solution homogeneity throughout the film-application procedure.
Altemose, Quentin D., "Processing and Properties of GeSeSbTe Chalcogenide Thin-Films for Optical Applications" (2018). Physics and Astronomy Honors Papers. 5.