Structural and vibrational properties of α- and π-SnS polymorphs for photovoltaic applications

A Novel Thermochemical Metal Halide Treatment for High-Performance Sb2Se3 Photocathodes

“…The observed blue shift of the peaks with original positions at 155 and 191 cm −1 can be related to the reduced level of internal stress in the films as Sb excess was disappeared and crystalline quality improved after the Cl-GT. Similar changes in peak positions have been recently reported for SnS films when the Sn/S ratio was increased and moved towards the more stoichiometric values [ 37 ]. With increased concentrations of SbCl 3 in solution to 300 mM, a reverse red shift was observed, indicating the back evolution of tensile strain ( Figure 3 , Table 1 ).…”

Single source precursor route to nanometric tin chalcogenides

“…Two-dimensional atomically thin semiconductor nanostructures, like tin monochalcogenides SnE (E = S, Sn) and tin dichalogenides SnE 2 (E = S, Se), have been attracting worldwide attention due to their exceptional electrical and optical properties, and their potential applications in nanoscale electronics, photonics and functional materials as well as semiconducting and optical devices. [1][2][3][4][5] Mono or few layered 2D van der Waals (vdW) tin-based chalcogenide materials are distinguished in their chemical and physical properties 6,7 as compared to their bulk counterparts. Additionally, these layered vdW materials have the advantage of their constituent elements being abundant in nature and not posing any health and environmental hazards.…”

Insights on the Thermal Stability of the Sb2Se3 Quasi‐1D Photovoltaic Technology

“…Recently, Raman scattering spectroscopy combined with Rietveld profile analysis of the XRD diffractograms has demonstrated to possess a high potential for the analysis of emergent multicomponent inorganic compounds such as Cu 2 SnS 3 , SnS, and Sb 2 Se 3 . [ 37–43 ] The close combination of both techniques allows to assess changes not only in the crystalline quality of the samples, but also variations in the chemical and phase composition, in the structure (including different polymorphs and texture), and even in point defect concentrations. [ 37–43 ] Finally, these structural and compositional information extracted by Raman and XRD analyses can be directly correlated with the optoelectronic properties of the individual solar cells.…”

“…[ 37–43 ] The close combination of both techniques allows to assess changes not only in the crystalline quality of the samples, but also variations in the chemical and phase composition, in the structure (including different polymorphs and texture), and even in point defect concentrations. [ 37–43 ] Finally, these structural and compositional information extracted by Raman and XRD analyses can be directly correlated with the optoelectronic properties of the individual solar cells. This analysis is structured in four sections: 1) study of the thermal stability of the bare Sb 2 Se 3 absorber under different PDA temperatures; 2) extension of the analysis by completing devices with the annealed absorbers and analyzing the effect of the PDA process on the optoelectronic properties; 3) direct application of the PDA to full Sb 2 Se 3 devices; and 4) detailed exploration of the degradation mechanisms and the thermal limitations of the Sb 2 Se 3 PV technology.…”