Optical characterization of As2Se3–Ag4SSe–SnTe amorphous thin films

Synthesis and characterization of germanium sulfide aerogels

“…Examples of such materials include As 2 Se 3 -Ag 4 SSe-SnTe, Ag-doped GeSe, Ge-As-Se, GeS 2 and La 2 S 3 , among others, which exhibit about 10 times lower optical transmission losses than silica as IR window materials [9][10][11][12]. Thus, the synthesis and study of chalcogenide aerogel materials is of great interest because new applications could be envisioned that exploit the porous nature of aerogels with the opto-electronic properties of the metal chalcogenides, particularly in fields such as photocatalysis.…”

Optical constants of As2Se3–Ag4SSe–SnTe amorphous thin films

“…The present paper is a continuation of previous investigations on the optical properties of amorphous thin films from the As 2 Se 3 -Ag 4 SSe-SnTe system and reports new data for the film optical constants computed by mathematical simulation models of the experimental spectra measured [11].…”

“…Thin As 2 Se 3 -Ag 4 SSeSnTe films were prepared by thermal vacuum evaporation of the glassy materials in a standard high-vacuum set-up. Evaporation conditions allowing the preparation of uniform and homogeneous films with compositions close to those of the bulk multicomponent materials were established [11,12]. The evaporation process was carried out at a residual pressure of about 1.33 · 10 À3 Pa, evaporation temperature range of 900-1000°C depending on the glass composition and a source-substrate distance of 0.12 m. Optical 'corning glass 3003' substrates were used for the purposes of our investigation; they were rotated during the deposition to prevent non-uniformities of the thickness of the thin films.…”

Probable metal–insulator transition in Ag4SSe

“…The Ag 4 SSe was concluded to be a specific individual phase [2] and was used as the end member of several pseudobinary and pseudoternary systems [5][6][7][8][9][10][11][12][13][14]. Alternatively, it is considered to be an ordinary member of the monoclinic Ag 2 S-type solid solution [3,4].…”