فهرست نشریات علمی دسترسی آزاد ایران

SnS:Cd nanostructured thin films were produced via chemical spray pyrolysis (CSP). XRD analysis shows an orthorhombic structure. The film with 4% Cd-SnS demonstrated favorable structural attributes, featuring a large crystallite size of 13.44 nm and a small dislocation line density of 5.355 × 1015 lines/m2. SEM images revealed noticeable surface transformations in SnS films, characterized by uniform spherical nano-grains following Cadmium doping. Cadmium doping decreased the bandgap energy (Eg) of SnS, with the lowest value of (1.35 eV) observed at 4% Cd doping in SnS. Undoped SnS had lowest resistance; 4% Cd doping increased resistance via electron extraction. NO2 exposure decreased resistance via oxygen ion concentration change. The sensitivity decreases with cadmium doping in SnS, impacting NO2 exposure response. Higher doping reduces responsiveness due to increased charge carrier recombination.