固相法合成上转换荧光粉及光谱测量虚拟仿真实验的设计与实践

Design and practice of virtual simulation experiment for solid-state synthesis of upconversion phosphor and spectral measurement

为了将发光材料的合成及表征过程融入实验教学,解决仪器设备昂贵、实验成本高、实验过程存在高温烫伤风险等问题,构建了固相法合成上转换荧光粉及光谱测量虚拟仿真实验教学系统.基于“高阶性、创新性和挑战度”原则,设计了虚拟仿真实验教学内容,建立了学考分离的教学评价模式.通过对实验工艺方法、设备认知、光路拆装及测量等环节的虚拟训练,旨在使学生充分了解和掌握上转换发光的物理过程,固相法制备上转换荧光粉的工艺流程,相关仪器设备的使用以及发射光谱的测量和分析方法.该虚拟仿真实验为科研反哺教学提供了新的途径,拓展了基础物理实验教学的广度和深度.

In order to integrate the synthesis and characterization process of luminescent materials into experimental teaching,and to solve the problems of expensive instrument,high experimental costs,and the risk of high-temperature during the experimental process,a virtual simulation experimental teaching system for solid-state synthesis of upconversion phosphor and spectral measurement was constructed.Based on the principle of“high order,innovation and challenge”,a virtual simulation experiment teaching content had been designed,and a teaching evaluation model that separates“learning”and“examination”had been established.Through virtual training on experimental techniques,equipment cognition,light path disassembly and measurement,the aim was to enable for students to fully understand and master the physical process of upconversion luminescence,the process of solid-state method for preparing upconversion phosphor,the use of related instruments,and the measurement and analysis methods of emission spectra.This virtual simulation experiment provided a new way for promotion of scientific research to teaching,and expanded the breadth and depth of basic physics experiment teaching.