燃燒法制備釩酸鹽發(fā)光材料及發(fā)光性研究

1、成都理工大學(xué)碩士學(xué)位論文燃燒法制備釩酸鹽發(fā)光材料及發(fā)光性研究姓名：李鈞甫申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：邱克輝20100501成都理工大學(xué)碩士學(xué)位論文 II Combustion Synthesis and Luminescence Properties of Vanadate Luminescence Materials Introduction of the author: Junfu Li, male, was born

2、in October, 1984 whose tutor was Professor Qiu Kehui. He graduated from Chengdu University of Technology in Materials Science major and was granted the Master Degree in June, 2010. Abstract Vanadate luminescent materials

3、 have been attracting more and more attentions for the high-efficient sensitization from VO43- to rear earth ions as well as the self-activated emitting properties of VO43- group. The low synthesis temperature, good chem

4、ical and thermostability make vanadate phosphor a promising luminescent material. At present, YVO4:Eu3+ red phosphor has been a commercial product among the vanadate luminescent material. This famous phosphor was mainly

5、obtained by high tempareture solid state reaction or oxalate precipitation process in industry. The high energy-intensive, time-consuming solid state reaction and complex, difficult-to-control oxalate precipitation proce

6、ss all have their drawbacks. While the combustion method as an easy and rapide, high efficient and energy saving procedure has great value in the synthesis of new materials. So it is very significant to research and prac

7、tise combustion method to synthesis vanadate phosphor. In this study, a Eu3+ activated Ca3(VO4)2 red emitting phosphor and a self-activated emission vanadate garnet phosphor Ca2KMg2V3O12 were prepared by a high efficient

8、 citric acid-assisted sol combustion method. All the samples were characterized by X-ray diffraction (XRD)，scanning eleerton microsopy (SEM) and fluorescence spectroscopy. The effects of process parameters on the phase c

9、omposition, micor-structure and luminescence properties of as-synthesized smaples were investigated based on these measurements and analysises. The optimized procedure is Ca/V = 3:2.2、T = 900℃、n(CA):n(Ca2++V5+) = 0.8. Fu

10、rther, the influences of Eu3+ ion doping concentration, Na+ or Li+ co-doping with Eu3+ ion on the spectroscopic structure of Ca3(VO4)2:Eu3+ which prepared by the optimized processing were studied in the paper. It was fou