Photoinduced phenomena in spin-coated vitreous As 2 S 3 and AsSe films

Spin-coating of Ge23Sb7S70 chalcogenide glass thin films

“…The resulting solution is stored inside a nitrogen-purged glove box, with less than 1 ppm of O 2 and H 2 O, in order to eliminate possible sources of oxygen or water incorporation into solutions and subsequent films. The solution is then centrifuged at a speed of 3000 rpm for 3 min to remove any suspended or undissolved particulate or impurities [22]. One milliliter of the solution is pipetted onto the substrate, and the substrate is spun at 1000 rpm for 30 s. The resulting films are annealed in a nitrogen atmosphere at 90°C for 1 h immediately after coating and then heated at 180°C for 1 h in vacuum to remove excess solvent and to further densify the film.…”

“…Thermal, optical and structural properties of spin-coated As 2 S 3 films deposited from propylamine or butylamine have been processed along with other binary chalcogenide systems (e.g., As 2 S 2 , As 2 Se 3 , As 2 Te 3 and GeSe) [18,19]. Subsequent to these initial efforts, several groups have extended efforts to produce spin-coated chalcogenide films of As 2 S 3 , As 2 Se 3 and Sb 2 S 3 and investigated potential applications such as high-resolution photoresists and holographic gratings [20][21][22][23]. Spin-coating approaches have the added advantage that the same solutions can be adopted for other precision dispensing techniques such as ink jet or laser direct write [24,25], giving spatial control over the location of the added material with programmable patterns.…”

Characterization of As2(Se1−xSx)3 series glass system

“…The glassy-type diarsenic trichalcogenides (a-As 2 X 3 ) have a specific character of photo-induced structural modification when the high-power light beam impinges at these glasses [17][18][19][20]. The characteristic of photo-induced transformation makes these chalcogenide glasses becoming an interest subject of considerable attentions from the fundamental as well as practical aspects.…”

The effect of temperature on photoinduced metastability in avalanche a-Se layers

“…Optically induced phenomena, which include photostructural transformations accompanied by photodarkening, have been widely studied in chalcogenide glasses (ChG) for many years [1][2][3][4]. Despite extensive investigations, the microscopic mechanisms of photostructural changes remain unclear for different ChG.…”