MICROSTRUCTURE, CRYSTAL IMPERFECTIONS ANDULTRASONIC STUDIESOF SPRAYED NANOSIZEDCu2-xSxOAND Cu2-yCryOTHIN FILMS

[摘要] In the current work, Cu2-xSxO(x = 0.05, 0.1 and 0.2) and Cu2-yCryO (y = 0.03 and 0.06) composite thin films were deposited on a heated glass substrate using spray pyrolysis technique. The effect of S and Cr doping on microstructure, crystal defects and mechanical properties of Cu2O nanoparticles was studied. X-ray diffraction results reveal that the single phase of Cu2O has a cubic structure without any other phases related S and Cr.Scherrer and Williamson and Hall methods were used to determine the parameters of the microstructure by analyzing the X-ray diffraction line profile.Some important parameters such as crystallite size, microstrain,average residual stress, number of crystallite/cm2 and dislocation density were studied. Analysis of microstructure and crystal imprefications revealed that all the parameters studied were increased by increasing the concentration of S in Cu2-xSxO; conversely, when adding a Cr element to Cu2-yCryO. The Mechanical properties of the films was observed by ultrasonic technique deduced that the doping of Cu2O thin film with S caused good quality of crystallinity. The doped films can be used for optoelectronic applications.

[学科分类] 生物技术

[关键词] Cuprous oxide;Thin films;Microstructural;Crystal imperfections;Mechanical properties