{"title":"Effect of calcination on the structural, morphological and optical properties of earth abundant Cu2FeSnS4 powders prepared by solid-state reaction","authors":"","doi":"10.1016/j.jssc.2024.124969","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper, we investigate the effect of calcination on the properties of Cu<sub>2</sub>FeSnS<sub>4</sub> (CFTS) prepared by solid-state reaction. As fabricated, the polycrystalline sample was crushed and the powders was calcined at different temperatures (<em>T</em><sub>C</sub> = 800, 900 and 1000 °C). A Rietveld analysis shows that the calcined powders have predominately the stannite phase with a nearly stoichiometric composition, with the presence of a small amount of SnS, supported by Raman scattering. Energy dispersive spectroscopy confirms the homogeneity of the CFTS materials. Moreover, the analysis of the surfaces of CFTS pellets using scanning electron microscopy showed a more compact and dense morphology as the calcination temperature increases, thus enhanced photosensitivity. From optical studies, we found that the bandgap energy decreases from 1.40 to 1.18 eV with increasing calcination temperature. Calcination can be a tool to engineer the optical band gap.</p></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":null,"pages":null},"PeriodicalIF":3.2000,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022459624004237","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we investigate the effect of calcination on the properties of Cu2FeSnS4 (CFTS) prepared by solid-state reaction. As fabricated, the polycrystalline sample was crushed and the powders was calcined at different temperatures (TC = 800, 900 and 1000 °C). A Rietveld analysis shows that the calcined powders have predominately the stannite phase with a nearly stoichiometric composition, with the presence of a small amount of SnS, supported by Raman scattering. Energy dispersive spectroscopy confirms the homogeneity of the CFTS materials. Moreover, the analysis of the surfaces of CFTS pellets using scanning electron microscopy showed a more compact and dense morphology as the calcination temperature increases, thus enhanced photosensitivity. From optical studies, we found that the bandgap energy decreases from 1.40 to 1.18 eV with increasing calcination temperature. Calcination can be a tool to engineer the optical band gap.
期刊介绍:
Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.