MgSnS Mg dopped SnS thin film are prepared by chemical both deposition tofind out the thickness of UV and XRD analysis carry out. The thickness of the filmfound to be that 476nm. The plot of extinction αhν*αhν against the photon is asshown in figure.3. From the figure that there is gradually decreases in extinction coefficient with the increasing in the photon energy. Thus the XRD analysis of MgSnSfilm is shown figure.4. The XRD analysis reveals that the MgSnS thin film hashexagonal crystalline structure.