Na-Doped p-Type ZnO Microwires

p-Type ZnO microwires were first synthesized by a simple chemical vapor deposition method using Na as the dopant Source. p-Type doping was confirmed by the electrical transport in single-wire field-effect transistors and low-temperature photoluminescence. The carrier mobility of the microwires was estimated to be similar to 2.1 cm(2) V-1S-1.