红色长余辉材料的研究进展  

Research progress of red long afterglow materials

作　　者：赵珊珊 俞彬 林远英 王振斌 高秀萍 刘伟生 Shanshan Zhao;Bin Yu;Yuanying Lin;Zhenbin Wang;Xiuping Gao;Weisheng Liu(State Key Laboratory of Applied Organic Chemistry,Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province,College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou 730000,China;School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学化学化工学院甘肃省有色金属化学与资源利用重点实验室功能有机分子化学国家重点实验室 [2]兰州大学物理科学与技术学院

出　　处：《科学通报》2019年第35期3717-3729,共13页Chinese Science Bulletin

基　　金：国家自然科学基金(21431002,21701072)资助

摘　　要：长余辉材料具有诱人的应用前景.然而在三基色长余辉材料中,相对于蓝色和绿色,红色长余辉材料的发光强度和余辉时间还远远不能满足实际应用的需要.因此,探索和研究新型的红色长余辉材料具有重要的理论和实际意义.本综述总结了红色长余辉材料的余辉机理、合成方法、发光中心类型和应用,讨论了红色长余辉材料研究和应用中存在的问题,并对红色长余辉材料发展前景进行了展望.Long afterglow materials have attractive application prospects.However,compared with the blue and green long persistence materials,the initial strength and decay time of red long afterglow materials cannot satisfy the practical application.Therefore,it is extremely urgent to explore efficient red long afterglow materials.Thus,it is of great theoretical and practical significance to explore and study new red long afterglow materials.In this review,we summarize the red afterglow performance and application of the long persistence materials,discusses the existing problems,and puts forward some suggestions for development of red long persistence materials.Luminescent materials can store energy after absorbing light energy,radiant energy,electrical energy,mechanical energy and other external energy.And then release the stored energy in the form of light after the excitation is stopped,and the luminescence can last for a long time(from a few seconds to dozens of hours).This luminescence is called long afterglow and the materials with long afterglow properties are called long afterglow materials.Currently,it is known that the mechanism of luminescence is a form of thermal excitation,results from storage of the excitation energy in traps and subsequent release induced by external thermal energy.The long afterglow phenomenon has been found in nature materials for over 1000 years,for example,documented in ancient Chinese paintings.The first scientifically documented long afterglow material was the bologna stone discovered by Vincenzo Cascariolo in 1602,but it was not until 1640 that Fortunius Liceyus recorded its luminous principle.The afterglow is generated by the electron transition of Cu+impurity level,and the Cu2+is reduced to the sulfur vacancy generated by Cu+as the trap center to store energy.Since then,there is a lot of long persistence materials have been reported,but it was only in 1996 that long persistence materials became a new optical materials research hotspot due to the discovery of the excellent SrAl2O4:Eu

关 键 词：红色长余辉材料 陷阱 发光中心 无机化合物 

分 类 号：G63[文化科学—教育学]