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Considering the good conductivity and anti-electromigration and low price,Cu films were prepared as electrodes of ZnO-based devices via pulsed laser deposition method on Si(111) substrates.The XRD and SEM images of ZnO/Cu films were examined and the current-voltage characteristics were measured.The results exhibit that ZnO films are highly c-axis oriented,and Cu films are highly(111) oriented.Ohmic contact can be obtained when the ZnO∶Cu layer was involved between the ZnO film and the Cu film,and the Ohmic contact properties can be improved after annealing.Study on how to improve the properties of Ohmic contact of the ZnO/Cu films is still continued.The results indicate that Cu may be used as Ohmic contact electrodes for ZnO-based devices.

Based on the development of community colleges in our country and its transfer education, career education, compensatory education, community education, quality education functions; analysing community colleges how to improve community residents’ subjective quality of life in education threshold,students fees,institutions ,three aspects; then in school model, institutes, teaching content and teacher team construction, exploring how to build community colleges for improving local residents’subjective quality of life.