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微波煅烧法合成荧光材料的研究

时间:2019-10-05 14:36来源:毕业论文
利用微波煅烧合成制备CaWO4:Eu2+,Dy3+发光材料,未取得如煅SrAl2O4:Eu2+,Dy3+的效果,针对此对比SrAl2O4:Eu2+,Dy3+分析了微波煅烧对于不同的发光材料合成的优势与局限性

摘要本论文对SrAl2O4:Eu2+,Dy3+以及CaWO4:Eu2+,Dy3+发光材料的微波煅烧合成方法进行了初步的研究,并对其发光性能进行了初步的研究探讨。论文的主要工作包括以下几个方面:
利用微波煅烧合成技术制备SrAl2O4:Eu2+,Dy3+和CaWO4:Eu2+,Dy3+发光材料,并对微波燃烧合成过程中的影响因素进行研究。研究结果表明,在微波功率为800W,煅烧时间为30MIN时可获得品相较好的SrAl2O4:Eu2+,Dy3+产品,材料可被紫外至可见光有效激发,有主要激发峰340nm,发射峰值位于514.2nm。CaWO4:Eu2+在XRD检测下有清晰的晶格构型,但未能有良好的发光性能。18908
利用微波煅烧合成制备CaWO4:Eu2+,Dy3+发光材料,未取得如煅SrAl2O4:Eu2+,Dy3+的效果,针对此对比SrAl2O4:Eu2+,Dy3+分析了微波煅烧对于不同的发光材料合成的优势与局限性。
关键词:SrAl2O4:Eu2+,Dy3+    CaWO4:Eu2+ ,Dy3+   微波煅烧
毕业设计说明书(毕业论文外文摘要
Title     Study on synthesis of  Fluorescent material By Microwave calcination
Abstract
In this study, the microwave calcination synthetic methods of luminescent materials were researched and the luminescent properties of these materials were discussed.
The main work of this paper contained three parts: Firstly, SrAl2O4:Eu2+,Dy3+ and CaWO4:Eu2+,Dy3+ were made by microwave calcination synthetic methods and the influenced paraments were discussed at the same time. The results showed that good SrAl2O4:Eu2+,Dy3+ products could be made when microwave power was 700W and calcination time was 30minutes. The material could be effectively motivated by ultraviolet radiation and visible lights, the main excitation peak was located at 340nm and emission peak was located at 514.2nm. Clear crystal lattice configurations of  CaWO4:Eu2+could be found under XRD tests, but luminescent properties couldn’t be found.
源`自<六:维;论-文>网/www.lwfree.cn

Then, CaWO4:Eu2+,Dy3+ were made by microwave calcination synthetic method and the results were not as good as SrAl2O4:Eu2+,Dy3+. According to this phenomenon, the advantages and disadvantages of microwave calcination synthetic methods were discussed.
Keywords  SrAl2O4:Eu2+,Dy3+ ;   CaWO4:Eu2+ ,Dy3+ ;   microwave calcination
目 次
1 文献综述    1
1.1 荧光材料概述    1
1.2 荧光材料的材料发光机理    1
1.3 荧光材料的合成方法简介    2
1.4低温燃烧合成的影响因素    5
1.5 荧光材料的发光模型    6
1.6 荧光材料的现状与展望    8
1.7 立题依据    9
2 发光材料的合成及实验方法    10
2.1 实验原料    11
2.2 实验仪器和设备    11
2.3 实验步骤和方法    11
2.4 样品测试    12
2.5 实验过程中的困难及改进方法    12
3 微波煅烧法合成工艺研究    14
3.1 苯甲酸添加对合成的影响    14
3.2 煅烧微波功率对材料的影响    16
3.3  硼酸助熔剂对微波煅烧的影响    18
3.4 反应体积对微波煅烧的影响    19
3.5 SrAl2O4:Eu2+,Dy3+发光性能分析    19
3.6 微波煅烧合成 CaWO4:Eu2+ ,Dy3+ 的工艺探究    21
结论    23
参考文献    25
1 文献综述 源`自<六:维;论-文>网/www.lwfree.cn
无论是古时帝王掌上夜明珠,还是现代百姓家的日光灯。荧光材料与人类的生活息息相关。本课题将利用微波煅烧法合成荧光材料。对工艺的反应功率,反应体积,反应原料等条件对反应的影响进行了实验。探寻微波煅烧法合成荧光材料的较佳工艺。 微波煅烧法合成荧光材料的研究:http://www.lwfree.cn/huaxue/20191005/40213.html
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