  We deposited Ag_2O films in PLD system on glass substrate for a fixed partial
oxygen gas pressure (70 mili Torr) with the variation of laser energy from 75
to 215 mJ/Pulse. The XRD patterns confirm that the films have well
crystallinity and deposited as hexagonal lattice and the crystalline size
increases from 26.38 nm to 27.27 nm. The FESEM images show that the particle
size of the films increases from 34.84 nm to 65.83 nm. The composition of the
films is analyzed from EDX spectra which show that the percentage of oxygen
increases from 41.03% to 48.38% with the increment of laser energy. From the
optical characterization, it is observed that the optical band gap appears in
the visible optical range in an increasing order from 0.87 to 0.98 eV with the
increment of laser energy. Our analysis concludes that the Ag_2O thin films,
deposited with these parameters, can be considered as a good absorbent layer
for solar photovoltaic application.
