Spin coated amorphous chalcogenide films: Structural characterization

Abstract

Thin films that are substantially amorphous arsenic sulfide have been prepared by spin deposition from solutions of n-propylamine or n-butylamine. These materials have been investigated by nuclear magnetic resonance, infrared absorption, and elemental analysis. A structural model is suggested based on As2S3 clusters surrounded by amine as an amine salt.

Inverse opal photonic crystal of chalcogenide glass by solution processing

“…Dissolution mechanism of the As-S glass in propylamine was reported by Chern and Lauks [19]. Authors proposed a formation of nano-colloidal clusters of glass with nano-meter size, which are solvated by molecules of solvent.…”

“…Some chalcogenide glasses can be dissolved in highly volatile amines such as propyl-or butylamine forming nano-colloidal solutions [19,20]. Dissolution mechanism of the As-S glass in propylamine was reported by Chern and Lauks [19].…”

“…The nano-colloidal glass solution was prepared by dissolving 1 g of the chalcogenide glass in 7 ml of propylamine (99.95 wt.%, Sigma-Aldrich, St. Louis, MO, USA). The dissolution and clustering mechanisms are described elsewhere [19,20]. The as-prepared solution was filtered through the PTFE filter (pore size 250 nm) to remove any undissolved particles of the CHG and dust.…”

Spin-coated As33S67−Se thin films: the effect of annealing on structure and optical properties

“…Thin films of chalcogenides have been primarily deposited onto substrates using vacuum coating techniques, particularly by thermal evaporation. Some laboratory studies [7][8][9][10][11] have shown that binary As-S chalcogenides can be coated as amorphous films using spin-coating technique from amine solutions. Spin-coated films have demonstrated similar properties and potential applications [6] as vacuum deposited films but the spin-coating deposition method is technologically easier and cheaper.…”

Quantum cascade lasers tuned by amorphous As 2 S 3 claddings

“…As 2 S 3 was first considered as a material for photography and then as a potential photoresist, with methods for spin coating it and studies of the properties of spun films appearing in the early 1980s [6][7][8]. Studies of the dependence of the optical properties of spin-coated As 2 S 3 films on illumination soon followed [9,10].…”