Therefore. carbon nitride has possibility of hydrogen storage capacity in addition to its existing properties. Although we are not claiming to have made a hydrogen storing carbon nitride film, as lot of research in this area have to be done before strongly coming to the conclusion, however, a existence of such phenomena is a possibility, whose further investigation will get a boost through this work. We can see that the features are much smooth in CVD grown films with a string substrate influence which might also be due to lower film thickness. The higher roughness as well as in the sputtered films is due to the accelerated argon ions in the cathode sheath region which leads to higher sputtering rate and roughness.