Compositional dependence of the optical properties of novel Ga–Sb–S–XI (XI = PbI₂, CsI, AgI) infrared chalcogenide glasses

Abstract

A novel family of Ga2S3–Sb2S3–XI (XI = PbI2, CsI, AgI) was investigated to understand the role of metal halides and exploit new chalco‐halide glasses for infrared optics. The dependence of the thermal properties, infrared optical properties, and structural information of the novel family on different metal–iodines was investigated. Results showed that metal halides increase the glass stability but decrease the glass network connectivity. The compositional dependence of the short‐wave cut‐off edge is associated with the electronegativity difference between the cations and anions of the metal halides. Raman study showed that the metal–iodine modified the glass structure mainly through the iodide content, and the cations dissolved in the glass network mostly as charge compensators for the aperiodic network. For the glasses in the series Ga2S3–Sb2S3–XI–Dy3+, Dy3+ emission increased in the PbI2‐ and CsI‐doped glasses but decreased in the AgI‐doped glass due to the combined effect of dysprosium and oxygen. For all that, these novel glasses are highly promised for use in infrared optics.

Structure promoted electrochemical behavior and chemical stability of AgI‐doped solid electrolyte in sulfide glass system

“…The as‐prepared powder sample after the deliquescence process for different times was subjected to Raman scattering measurement for a better understanding of the influence of humidity on the network. The Raman peaks were decomposed in a series of sub‐bands for further accurate analysis by Gaussian fitting method 24,25 . Figure 9A‐C indicate that, after three days of exposure, the entire Raman peak presented a declining trend in intensity.…”

Effect of glass composition on the physical properties and luminescence of Pr3+ ion‐doped chalcogenide glasses

“…22 A high degree of cross-linking and a large average bond energy typically imply high T g . 25,26 In Table 1, the density is greater in the Sb-containing glass than in the In-and Ga-containing glasses because the atomic mass of Sb is larger than that of In and Ga. Figure 1A illustrates that the refractive index is higher in the In-containing glass than in the Ga-containing glass, that is, n (Ge 20 Ga 15 Se 65 ) < n (Ge 20 Ga 10 In 5 Se 65 ) < n (Ge 20 Ga 5 In 10 Se 65 ). The bond energies of 22 This result is consistent with the change in T g .…”

“…These effects can reduce the connectivity of the glass network, and therefore account for the decrease in T g with the increase in I addition Ge 20 Ga 5 Sb 10 Se 65 glass. 25,26 In Table 1, the density is greater in the Sb-containing glass than in the In-and Ga-containing glasses because the atomic mass of Sb is larger than that of In and Ga. Figure 1A illustrates that the refractive index is higher in the In-containing glass than in the Ga-containing glass, that is, n (Ge 20 Ga 15 Se 65 ) < n (Ge 20 Ga 10 In 5 Se 65 ) < n (Ge 20 Ga 5 In 10 Se 65 ). Moreover, the Sb-containing glass has a higher refractive index than the Ga-containing glass, that is, n (Ge 20 Ga 15 Se 65 ) < n (Ge 20 Ga 10 Sb 5 Se 65 ) < n (Ge 20 Ga 5 Sb 10 Se 65 ).…”