Effect of post-oxidation on snO2 thin films

Abstract EN

An investigation which include sy nthesis of SnO 2 thin film by depositing onto glass substrates at room temperature using the rmal evaporation technique.

The films were post-annealing in furnace tube at 250 o C tempe rature for different time (10, 20, 30 and 40 minutes).

The films were charac terized by AFM microscopy , FTIR and optic al absorption spectrophotometer.

The grain size was observed to increase with increase the annealing duration.

Absorbance spectra were taken to examine the optical properties and band gap energy was observe d to dec rease with increase the annealing duration.

The e ffec t of annealing time on the optical and morphologi cal prope rties of films we re studied and discussed.