报告题目：Preparation and Luminescent Characteristics of Deep UV Emitting ZnAl2O4 Phosphor for Sterilization Device

主讲人：Hiroko Kominami

主持人：兰州大学材料与能源学院  王育华  教授

时间：2024年月24日（周二）上午10:40-11:40

地点：格致楼4022

        报告摘要：Recently, attention has been focused on the possibility of ultraviolet sterilization in order to remove harmful bacteria and viruses to the human body. However, UV-C has a higher photon energy than UV-A and UV-B, and the energy corresponds to the forbidden gap width of the phosphor. The light in this region constitutes the organism. Since it is larger than the binding energy of carbon–carbon bonds (including double and triple bonds) that it bears, it is possible to break these bonds in a non-contact, and it shows a function as sterilization. So far, 254nm, which is one of the emission lines of mercury, has been used as the light in this region. It is "fluorescent lamp" without phosphor coating. It is still widely used today because of its simple structure, low production cost, and strong sterilization line. However, concerns remain about the environmental issues of mercury utilization. Based on zinc oxide compound as the main material, this lecture discusses the detailed characteristics of this kind of structure and the luminescence characteristics of the application of germicidal lamp, and emphasizes the application of this kind of material in the ultraviolet luminescence device.

        个人简介：Hiroko Kominami is Regular a Member of the Japanese Society of Applied Physics, a Board member of the International Association of Display Seminars and won the Young Researcher Award. Received Ph.D. in Electronics and Material Science, Faculty of Engineering from Shizuoka University in 1999. The development and performance improvement of medical X-ray excited nanophosphors and ultraviolet emission phosphors have been studied deeply. Hiroko Kominami is currently an Associate Professor at Shizuoka University，previously served JSPS as a PhD Researcher.