Probing the role of deposition time in tuning the physico-chemical, optoelectronic performance of Cu2SnS3 thin films

Publication date: 15 November 2019Source: Materials Letters, Volume 255Author(s): Monika P. Joshi, Popatrao N. BhosaleAbstractTime dependent Cu2SnS3 (CTS) thin films have been synthesized by simplistic arrested precipitation technique (APT) via restricted release of ions from metal complex and used as potential photocathode for photovoltaic application. The influences of deposition time on physico-chemical, optoelectronic performance have been studied for the first time. With progress in reaction time decrement in optical band gap from 1.94 to 1.75 eV was noticed. XRD & Raman analysis verified that CTS crystallize in tetragonal crystal structure. FESEM micrographs depicted nanospherical morphology of the material. The oxidation states of the elements were confirmed from XPS and are in good agreement with CTS. A drastic improvement in the photoconversion efficiency of bare CTS photocathode with 0.34 % was noticed through cell configuration glass/FTO/Cu2SnS3/(I−/I3−)/graphite.Graphical abstract
Source: Materials Letters - Category: Materials Science Source Type: research