Molar optimization of spray pyrolyzed SnS thin films for photoelectrochemical applications

A systematic investigation of the effect of molar concentration ratio on the structural, morphological, optical and opto-electronic properties of spray deposited SnS thin films on F:SnO2 coated glass substrate is presented. The as-deposited SnS was polycrystalline with orthorhombic crystal symmetry. The S atomic percentage of SnS film was found to be linear with respect to the molar concentration of thiourea for fixed concentration of SnCl2. An optimum molar concentration ratio of S2−/Sn2+ in the range of 1.3-1.4 was found superior for photoelectrochemical applications.