Zn2+ions have been doped into single-crystalline silicon making use of quick diffusion method.Fluorescence photospectrometer has been used to analyze the photoluminescence properties of the samples which are fabricated by anode electrochemical etching,and the results show that the luminescence intensity of porous silicon is increased after Zn2+diffusion.Moreover,the surface morphology of the samples and FTIR absorption spectra have been investigated by means of scanning electron microscope and Fourier trans...