(Cu,Co)-codoped ZnO thin films,Zn0.95-xCo0.05CuxO(x=0,0.01,0.03,0.05) thin films were prepared by sol-gel method.The morphology and structure of the thin films were investigated using metallographic microscopy and X-ray diffraction(XRD).The results indicate that the doping does not change the crystal structure of ZnO,but affect the intensity and position of the diffraction peak.The photoluminescence(PL) spectra measured at room temperature show that the ultraviolet light and blue emittion accompanied by a w...