... Preferential Crystal Orientation, J Am Ceram Soc., 81 [6] 162232 (1998) [10] Xu Zi-qiang, Deng Hong, Al- doping effects on structure, electrical and optical properties of c-axis-orientated ZnO: Al thin ... polycrystalline wurtzite structure of ZnO: Al films annealed at 500oC in air The conductivity depends on environment annealling conditions, i.e the conductivity increases 103 times by vacuum annealing ... (neutral defects) v cỏc nguyờn t Al trung hũa in tớch s khụng tham gia vo vic to thnh electron t [10] S lng Al hot tớnh in mng cng gim nng pha Al cng ln (nhiu nguyờn t Al b trung hũa nng pha Al...