Formation, Microstructure, and Conductivity of a Novel Ga2S3-Sb2S3-AgI Chalcogenide System

Abstract

Novel glasses in a Ga2S3-Sb2S3-AgI system were prepared with a melt-quenching method, and their glass-forming region was identified. The maximum dissolvable AgI in glasses was 65 mol%. The thermal, optical, and structural properties of glasses were investigated as a function of AgI and Ga2S3 contents. The Ga2S3-Sb2S3-AgI glasses possess a wide region of transmission window (0.65−14 μm). An ionic conductivity of approximately 1.01 × 10−3 S/cm can be obtained for a 40 (0.8Sb2S3-0.2Ga2S3)-60AgI glass at an ambient temperature, and the ionic conductivity increased as temperature increased. The relative activation energy of Ag+ conduction was also calculated. These novel glasses show potential for the combined application of infrared optics and solid electrolytes.

Effect of heat treatment on AgI‐rich chalcogenide glasses with enhanced ionic conductivity

“…The second change was that the Raman band around 275 cm −1 shifted to 265 cm −1 . Considering the previous studies on chalcogenide glass containing AgI and the vibration theory, we surmised that the peak at 275 cm −1 is caused by the formation of the [SbS 3‐x I x ] mixed structure . Owing to the precipitation of AgI, [SbS 3‐x I x ] and [GaS 4‐x I x ] units decreased in amount and decomposed to the [SbSI], [SbS 3 ], and [GaS 3 –S 3 Ga] units to compensate the loss of I − in the network structure.…”

“…Ga–Sb–S glass is a recent novel Ge‐free system that has a broader transmission range and lower cost than Ge‐based chalcogenide glasses. In our previous work, we successfully introduced a large amount of AgI in a Ga–Sb–S glass matrix, which subsequently exhibited good glass‐forming ability, transparency, and heat stability. To fabricate chalcogenide glass‐ceramics used in solid batteries, we investigated glass composition of 40(0.8Sb 2 S 3 ‐0.2Ga 2 S 3 )‐60AgI containing large amounts of AgI.…”

Glass formation and physical properties of Sb2S3–CuI chalcogenide system*

“…Conductivity of (100 − x)Sb 2 S 3 -xCuI samples can be calculated according to σ = L/(SZ 0 ) (L: the thickness of asprepared samples; S: electrolyte-electrode surface area; Z 0 : specific value of the bulk resistance). [21,22] Figure 5(c) shows the temperature-dependence (between 30 • C to 200 • C) of conductivities for the (100 − x)Sb 2 S 3 -xCuI samples. The conductivity of glass ceramics is dependent on the composition and structure of glass ceramics.…”

“…In addition, fast Cu-ion conduction was also investigated in this glassy system, which is of guiding significance for future designing solid glassy electrolytes. [19][20][21][22]…”

EFFECT OF Ga/Ge RATIONS ON THE STRUCTURE AND ELECTRIC PROPERTIES OF Ga–Ge–Sb–S–AgI SYSTEM

“…Activation energy (Ea) is often defined as a temperature-independent constant. Therefore, the antiderivative of the above Arrhenius equation was obtained using the formula lnσT = lnσ 0 − Eа/kT, and the values of Ea and σ 0 could be easily deduced from the linear regression [17][18][19][20][21][22] . Fig.…”