We have investigated the structural, electrical and optical properties of thin films of zinc oxide deposited by laser ablation. We find that even at room temperature the films are c-axis oriented on both crystalline and amorphous substrates. The electrical de resistivity is independent of substrate temperature and is about 2-3 m Omega cm(-1). The films have low absorption coefficient in the visible part of the spectrum and represent some of the best ZnO films deposited at low temperature.