Photo-effect on crystallization kinetics of amorphous selenium doped with sulphur

Reverse Monte Carlo simulations of an amorphous Se0.90S0.10 alloy produced by mechanical alloying combining XRD and EXAFS data

“…Some interesting features can be noted. First, considering g Se − Se (r), the use of EXAFS data in the simulations produced a split in the first Se-Se shell, resulting in an intense shell with a maximum at r 1 Considering now the g Se − S (r) function, the use of EXAFS in the RMC simulations produced a much better defined Se-S shell at Table 1), it can be seen that they agree considering the error bars, but the use of EXAFS makes the obtained structural values more precise. The ranges used in the calculations were [2.20-2.65]Å and [2.65-3.05] Å for the first and second subshells, respectively.…”

“…Alloys formed by Se and S exhibit an electronic conductivity of p-type semiconductor and some properties related to these alloys were already studied. Thermal and electrical properties for amorphous samples were determined in some studies [1][2][3], and recently Musahwar et al [4] measured dielectric and electrical properties for Se x S 1−x glasses (x=1,0.95, 0.90,0.85,0.80), and the optical gap of Se x S 1−x thin films (x=0.9,0.8,0.7, 0.6) was determined by Rafea and Farag [5]. Ward [6] obtained vibrational modes for some crystalline Se-S alloys through Raman spectroscopy.…”

Vibrational, optical and structural studies of an amorphous Se0.90S0.10alloy produced by mechanical alloying

“…Ward [1] obtained vibrational modes for some crystalline Se-S alloys through Raman spectroscopy. Thermal and electrical properties for amorphous samples were determined in some studies [2][3][4], and recently Musahwar et al [5] measured dielectric and electrical properties for Se x S 1−x glasses (x = 1, 0.95, 0.90, 0.85, 0.80), and the optical gaps of Se x S 1−x thin films (x = 0.9, 0.8, 0.7, 0.6) were determined by Rafea and Farag [6]. However, concerning structural properties, relatively few investigations have been made on these alloys.…”

Structural characterization of light-induced crystal growth in Se98Sb2 chalcogenide glass

“…They found that light-induced crystallization effects result from the generation of electron-hole pairs in the vitreous phase. Kotkata et al [18] studied the effect of light on crystallization kinetics in amorphous selenium. The light-induced crystallization in amorphous Se 100-x Ge x has been investigated by Matushita et al [19].…”