Microstructure, Photoluminescent Properties and Application of ZnO Films Grown on Al Foils
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第2期
论文作者：吴红艳 ZHAO Jiayu XIE Aigen XU Linhua ZHONG Kun SHEN Tongtong
文章页码：408 - 411
摘 要：To obtain safety working before long-term early warning, we proposed a process for the preparation of luminescent films on metal substrate to detect the wear life. ZnO films were prepared on aluminum（Al） foils by the magnetron sputtering technique. The microstructure, tribological properties and photoluminescence（PL） spectra of ZnO films before and after the friction test were investigated. The microstructure of ZnO films grown on Al foils exhibited a closely packed hexagonal cone shape. ZnO films were grown along the orientation perpendicular to the substrate. The tribometric tests revealed that the average friction coefficient of ZnO films was lower and more stable than that of the substrate. The results of PL spectra indicated that the effect of Al element on ZnO films led to shifts of the defect related visible band. The luminescent center of ZnO films shifted from the emission peak at 510 nm before the friction to 647 nm after the friction, indicating that the green light shifted into the red light as the friction occurred. The visible light was helpful to understanding the failure characteristics during the friction and wear, and provide an early indicator of the impending failure.
吴红艳，ZHAO Jiayu，XIE Aigen，XU Linhua，ZHONG Kun，SHEN Tongtong
School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology
摘 要：To obtain safety working before long-term early warning, we proposed a process for the preparation of luminescent films on metal substrate to detect the wear life. ZnO films were prepared on aluminum（Al） foils by the magnetron sputtering technique. The microstructure, tribological properties and photoluminescence（PL） spectra of ZnO films before and after the friction test were investigated. The microstructure of ZnO films grown on Al foils exhibited a closely packed hexagonal cone shape. ZnO films were grown along the orientation perpendicular to the substrate. The tribometric tests revealed that the average friction coefficient of ZnO films was lower and more stable than that of the substrate. The results of PL spectra indicated that the effect of Al element on ZnO films led to shifts of the defect related visible band. The luminescent center of ZnO films shifted from the emission peak at 510 nm before the friction to 647 nm after the friction, indicating that the green light shifted into the red light as the friction occurred. The visible light was helpful to understanding the failure characteristics during the friction and wear, and provide an early indicator of the impending failure.
关键词：
