%0 Journal Article %T Transition from n- to p-type of spray pyrolysis deposited Cu-doped ZnO thin films for NO2 sensing %A Rahmani, Mohammad Bagher %A Keshmiri, Sayyed-Hossein %A M. Shafiei %A K. Latham %A W. Wlodarski %A J. Du Plessis %A K. Kalantar-Zadeh %J Sensor Letters %@ 1546-198X %D 2009