Effect of Film Thickness on the Optical Properties of Las Thin Films Deposited by Spray Pyrolysis Technique
نویسنده
چکیده
Thin films of LaS were prepared by using spray pyrolysis technique at 270 0 C and thickness were varied by changing the concentration of reactant solution. The films were optically characterized and their variations with film thickness were studies. It was found that thickness can be tuned by varying concentration of reactant solution. The band gap was found to vary between 2.35eV to 2.50eV. The deposited films show improvement in optical properties with the increase in film thickness which is reflected in values of refractive index, extinction coefficient and average transmission of the films.
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