摘要
稀土发光材料与器件是一门讲授发光材料与照明、显示产业结合的课程。发光材料的发光过程涉及复杂点电子跃迁等物理过程,传统的授课方式越来越难满足学生对复杂知识的掌握。本文针对这个问题,结合了教学实例,采用密度泛函理论计算硫化物荧光粉基质的电子结构,通过能带理论解释了荧光粉热猝灭的机理。结果表明,密度泛函理论能够直观地解释荧光粉热猝灭过程与能带的联系。探索了密度泛函理论融入稀土发光材料与器件课程的方式。
"Rare-earth luminescence materials and device" is a curriculum of the combination of luminescence materials with lighting and display. The luminescence process is related to the physical process of electron transition.Traditional teaching is becoming more and more difficult to help the student understand the knowledge. This work calculated the electron structures of sulfide phosphor to explain the mechanism of thermal quenching, combining with the teaching example. The results demonstrated the relation between the thermal quenching process and bandgap can be easily understood with the help of density functional theory. This work also explored the introduction of density functional theory into the curriculum of "rare-earth luminescence materials and device".
作者
温大尉
郭月
WEN Dawei;GUO Yue(School of Applied Physics and Materials,Wuyi University,Jiangmen,Guangdong 529020)
出处
《科教导刊》
2021年第31期104-106,共3页
The Guide Of Science & Education
基金
五邑大学高层次人才计划(2019TP007)(TP2018009)
广东省基础与应用研究联合项目(2019A1515111201)。
关键词
密度泛函理论
能带结构
电子态密度
发光材料
density functional theory
band structure
electronic density of states
luminescence materials
