欢迎访问过程工程学报, 今天是

›› 2011, Vol. 11 ›› Issue (3): 509-513.

• 材料工程专栏 • 上一篇    下一篇

不同硅源对水热合成Zn2SiO4:Mn荧光材料形貌及性能的影响

许海艇 徐光青 郑治祥 吴玉程   

  1. 合肥工业大学材料科学与工程学院 合肥工业大学材料科学与工程学院 合肥工业大学材料科学与工程学院 合肥工业大学材料科学与工程学院
  • 收稿日期:2011-02-25 修回日期:2011-04-11 出版日期:2011-06-20 发布日期:2011-06-20
  • 通讯作者: 徐光青

Effect of Silicon Sources on the Shapes and Luminescent Properties of Zn2SiO4:Mn Phosphors Synthesized by Hydrothermal Method

XU Hai-ting XU Guang-qing ZHENG Zhi-xiang WU Yu-cheng   

  1. School of Materials Science and Engineering, Hefei University of Technology School of Materials Science and Engineering, Hefei University of Technology School of Materials Science and Engineering, Hefei University of Technology School of Materials Science and Engineering, Hefei University of Technology
  • Received:2011-02-25 Revised:2011-04-11 Online:2011-06-20 Published:2011-06-20
  • Contact: XU Guang-qing

摘要: 分别以晶态和非晶态SiO2为硅源,在高压釜中采用水热法合成Zn2SiO4:Mn荧光粉,并对其晶体结构、形貌、光吸收及光致发光性能进行表征. 结果表明,在220℃下反应6 d,以晶态SiO2合成的Zn2SiO4:Mn纳米颗粒呈六棱柱状,具有单晶结构,颗粒长约5~8 mm,平均直径约1 mm;以非晶SiO2合成的Zn2SiO4:Mn纳米颗粒呈多晶结构,平均长约500 nm,平均直径约100 nm. 2种硅源所制样品在250 nm以下的紫外光区具有强吸收,且非晶SiO2所制样品在250~350 nm具有良好的紫外光吸收能力. 以不同硅源低温制备的Zn2SiO4:Mn样品在波长215和250 nm的紫外光激发下均能产生520 nm的绿色荧光,且在相同反应时间下非晶硅源制备的样品发光较强.

关键词: Zn2SiO4:Mn, 水热合成, 光致发光, 晶态氧化硅, 非晶态氧化硅

Abstract: Zn2SiO4:Mn phosphors were synthesized by hydrothermal method in stainless-steel autoclaves using both crystalline and amorphous SiO2 as silicon sources. The phase structures, morphologies, light absorption, and photoluminescence properties of the products were characterized. The results show that Zn2SiO4:Mn phosphor can be obtained by using the different silicon sources. With crystalline SiO2, monocrystalline Zn2SiO4:Mn can be obtained, and the shape of the products is hexagonal prism with the average length of 5~8 mm and diameter of about 0.8 mm. However, the products are polycrystalline Zn2SiO4 with the amorphous SiO2 as silicon sources. The average length of the particles is about 500 and 100 nm in diameter. Both of the two samples have strong absorption band with the wavelength from 200 nm to 250 nm, and the sample using crystalline SiO2 has an absorption band between 250 nm and 350 nm. Zn2SiO4:Mn phosphors using different silicon sources show a strong green emission with the wavelength at about 520 nm under 215 nm and 250 nm excitation, and the luminescent intensity of the sample using crystalline SiO2 is higher than that of the other one.

Key words: Zn2SiO4:Mn, hydrothermal synthesis, photoluminescence, crystalline SiO2, amorphous SiO2

中图分类号: