Transition from nto p-Type of Spray Pyrolysis Deposited Cu Doped ZnO Thin Films for NO 2 Sensing

Transition from nto p-Type of Spray Pyrolysis Deposited Cu Doped ZnO Thin Films for NO2 Sensing M. B. Rahmani1 2 ∗, S. H. Keshmiri2, M. Shafiei1, K. Latham3, W. Wlodarski1, J. du Plessis4, and K. Kalantar-Zadeh1 1Sensor Technology Laboratory, RMIT University, Melbourne, Australia 2Microelectronics Research Laboratory, Physics Department, School of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran 3Applied Chemistry, School of Applied Sciences, RMIT University, Melbourne, Australia 4Applied Physics, School of Applied Sciences, RMIT University, Melbourne, Australia