Epitaxial zinc oxide, graphene oxide composite thin-films by laser technique for micro-Raman and enhanced field emission study

We made an attempt to form a high quality epitaxial zinc oxide, diamond-like-carbon and graphene oxide composite thin-film on device substrate p-Si(1 0 0) using third-harmonic (Nd:YAG Ultraviolet) laser at single footstep. Pulsed laser deposition (PLD) technique using 366 nm (energy∼150 mJ), vacuum 10-6 mbar has been used to grow these films in reactive gas oxygen with argon (O2|Ar) ambiance. Synthesized thin-films were investigated systematically by fingerprint technique of confocal micro-Raman and field emission studies. As synthesized pure ZnO, nanocomposite thin films like DLC/ZnO and GO/ZnO shows the enhanced field emission (F-E) performances in this present study.