Effect of substrate temperature on the morphology, structural and optical properties of Zn1−xCoxO thin films

▶ Zn1−xCoxO thin films on sapphire (0001) substrates were prepared by PLD. ▶ Ts affected the microstructure, morphology and optical properties of all samples. ▶ The emission peak at 418 and 490 nm was in relation to Zni and VOZni, respectively. ▶ The quantity of Zni remained mostly invariable under a fixed work ambient pressure.