03 خرداد 1403
نادر قبادي

نادر قبادی

مرتبه علمی: دانشیار
نشانی:
تحصیلات: دکترای تخصصی / فیزیک-حالت جامد
تلفن:
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان
Correlation between the photocatalytic activity of CdSe nanostructured thin films with optical band gap and Urbach energy
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Nanostructured thin film Initial concentration Size-dependent photocatalytic Optical band gap Urbach energy
سال
2020
مجله CHEMICAL PHYSICS
پژوهشگران نادر قبادی

چکیده

In this research, the effects of initial concentrations on the optical properties of Cadmium Selenide nanostructured thin layers synthesized by the chemical solution deposition method have been investigated. Experimental data showed that the initial concentration controlling during deposition has a remarkable role in the optical band gap energy and thin film configuration. It was found that thin film thicknesses increase with increasing of the initial concentrations so a sample with higher initial concentration degrades the dye pollutant in more effective in comparison with a sample of the low initial concentration. The methylene blue and condo red were used as a pollutant to estimate the photocatalytic action of the sample. The optical band gap for deposited thin films decreased from 3.52 eV to 1.86 eV also Urbach energy, equal to the values of the tail of localized states increase from 0.176 to 0.9 eV with increasing of the initial concentration.