“…So far several methods are reported to yield C 3 N 4 coatings, amongst them, laser ablation [6], RF sputtering [7], CVD [8], reactive DC/RF magnetron sputtering [9,10], and Arc plasma deposition [11] are noteworthy. Though many techniques have been used to fabricate C -N film, yet the crystalline carbon nitride film has been reported by few research group only.…”