Characterization of polymer microtip array coated GaN thin film using femtosecond pulsed laser deposition

The characterizations of polymer microtip array coated GaN thin film using femtosecond pulsed laser deposition have been studied. The results indicate that die GaN thin film deposited on polymer array is hexagonal polycrystalline, and die GaN microtip FEA has uniform size and well-defined profile, which shows a field emission characteristics.