大学化学 >> 2020, Vol. 35 >> Issue (4): 112-118.doi: 10.3866/PKU.DXHX201907039

所属专题: 全国大学生化学实验创新设计竞赛

  上一篇    下一篇

K2GeF6:Mn荧光粉的化学共沉淀合成、结构测定与发光性能研究——介绍一个研究型综合实验

魏灵灵, 焦桓()   

  • 收稿日期:2019-07-28 录用日期:2019-08-15 发布日期:2019-09-11
  • 通讯作者: 焦桓 E-mail:jiaohuan@snnu.edu.cn
  • 基金资助:
    陕西师范大学教育教学改革研究项目(GERP-19-42)

Study on Co-precipitation Synthesis, Structure Characterization and Photoluminescent Properties of K2GeF6: Mn Phosphors

Lingling Wei, Huan Jiao()   

  • Received:2019-07-28 Accepted:2019-08-15 Published:2019-09-11
  • Contact: Huan Jiao E-mail:jiaohuan@snnu.edu.cn

摘要:

介绍一个大学化学研究型综合实验——K2GeF6:Mn荧光粉的化学共沉淀合成、结构测定与发光性能研究。本实验结合氧化还原与化学共沉淀法制备K2GeF6:Mn荧光粉,借助XRD和SEM对粉体进行结构表征,并利用荧光光谱仪测试分析其发光性能,探究激活剂含量和反应温度对粉体结构与性能的影响,获得可应用于商业白光LED的红色荧光粉。通过该实验的设计与实施,使学生在掌握基本实验技能的同时,能够结合基础理论知识解释实验原理、分析实验现象,并进一步提升学生的科学研究思维和综合运用知识的能力。

关键词: 研究型综合实验, 化学共沉淀法, 氟化物红色荧光粉, 荧光光谱

Abstract:

A research-based comprehensive experiment was introduced:co-precipitation synthesis, structure characterization and photoluminescent properties of K2GeF6:Mn phosphors. Chemical redox and co-precipitation method was employed to synthesize K2GeF6:Mn phosphors. By using XRD, SEM and PL spectra characterization techniques, the effects of Mn contents and reactive temperatures on the structure and properties of K2GeF6:Mn phosphors were studied. The red phosphors show great potential in LEDs applications. Through this experiment, students can master the basic laboratory skills; interpret the experimental principles with their basic theoretical knowledge, which will further enhance their scientific research ability and comprehensive application of knowledge.

Key words: Research-based comprehensive experiment, Co-precipitation synthesis, Hexafluoride phosphors, Photoluminescence

MSC2000: 

  • G64