Thermal properties of ternary Ge–Sb–Se chalcogenide glass for use in molded lens applications

Structural and spectroscopic ellipsometry studies on vacuum-evaporated Sn2m−4Sb4S2m+2 (m = 2.5, 3 and 4) thin films deposited on glass and Si substrates

“…Generally, the increase of the density of the structural units or bonds assigned to each peak increases its intensity. The same behavior was found in similar ternary systems when studying the effect of Sn addition in Sn x Sb 20 Se 80-x [40], Sn x Sb 5 Se 95-x [4] and Sn x Sb 15 Se 85-x [43]. It is relevant to notice that P. Kumar chemically, structurally, with respect to temperature and stress stability.…”

“…The second intense peak is located at 230 cm -1 for SnSb 4 glass or silicon. Its origin will be raised in the discussion part.…”

“…They have advantageous properties such as high reflectivity contrast, cyclability, long term stability, and fast crystallization speed [3]. Ge-rich compositions of the Ge-Sb-Se system are preferable for molded lens application since thermal and mechanical properties are better in these compositions [4]. M x Sb y (S,Se,Te) z materials exhibit important phase-change kinetics for high switching speed and high reliability of random access memory [5,6] and high thermoelectric properties [7][8][9].…”

Enhanced surface patterning of chalcogenide glass via imprinting process using a buffer layer

“…However, experiments concerning the effects of buffer layer were mainly performed with As 2 S 3 glass, since this glass is one of the prototypical chalcogenide glasses [7]. As starting materials, arsenic (As) and sulfur (S) with purities of 99.999% were used in their elemental form to fabricate 'bulk' glass via the conventional melt-quenching route [8][9][10]. After being carefully weighed, each batch was vacuum-sealed inside a silica ampoule and then melted at 1000 • C for 24 h using a rocking furnace.…”

Thermal expansion behavior of Ge‐Sb‐Se glasses in a compositional range for molded infrared lens applications

“…3 Various properties of Ge-Sb-Se glass have been investigated in an effort to compositionally optimize it for this purpose. 8 Hardness also turned out to be proportionally more sensitive to the Ge content than other constituent atoms. To be more specific, a series of experiments conducted on glass in a compositional region conducive to the molding process verified that the Ge content was the most influential factor in determining the glass transition temperature and dilatometric softening point.…”