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Abstract

Prussian blue (PB) electrochromic (EC) thin films deposited on the FTO substrate 150,250 and 350 nm thickness, prepared by homemade spray pyrolysis technique. Thin films were irradiated by beta particles having energy 0.549 MeV from Sr-90 for half hour. Before and after irradiation, Structural, optical and electrical properties of the electrochromic thin films were studied by X-ray diffraction, Ultraviolet spectroscopy, Cyclic voltammetry and Chronoamperometry traces (CA) respectively. After irradiation absorbance increases for (525- 750) nm wavelength, furthermore transmittance decrease for low wavelength. The bleaching voltage of PB thin films decreases after irradiation from -75 mV to +50mV, as well the bleaching time of PB thin films decreased from 69.07s to 48.98s and coloring time decreased from 28.07 s to 20.54 s.