物理化学学报 >> 2013, Vol. 29 >> Issue (09): 2056-2061.doi: 10.3866/PKU.WHXB201307091

光化学和辐射化学 上一篇    下一篇

CaF2对CaO-CaF2-B2O3-SiO2:Sm2O3玻璃的光致发光增强效应

乔荫颇, 殷海荣, 张燕斌, 潘云娟, 乔璐, 刘婷   

  1. 陕西科技大学材料科学与工程学院, 西安 710021
  • 收稿日期:2013-01-31 修回日期:2013-07-08 发布日期:2013-08-28
  • 通讯作者: 乔荫颇 E-mail:ypqiao@sust.edu.cn
  • 基金资助:

    中国博士后科学基金面上项目(20110491640);陕西省教育厅科研计划项目(11JK0839);陕西科技大学科研启动基金项目(BJ10-11);陕西科技大学创新创业训练计划项目(201310708008, 201210708011)资助

Enhanced Photoluminescence Properties of CaF2 in CaO-CaF2-B2O3-SiO2 Glass Doped with Sm2O3

QIAO Yin-Po, YIN Hai-Rong, ZHANG Yan-Bin, PAN Yun-Juan, QIAO Lu, LIU Ting   

  1. School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
  • Received:2013-01-31 Revised:2013-07-08 Published:2013-08-28
  • Contact: QIAO Yin-Po E-mail:ypqiao@sust.edu.cn
  • Supported by:

    The project was supported by China Postdoctoral Science Foundation Funded Project (20110491640), Scientific Research ProgramFunded by Shaanxi Provincial Education Department, China (11JK0839), Scientific Research Initial Funding of Shaanxi University of Science and Technology, China (BJ10-11), and Training Programs of Innovation and Entrepreneurship of Shaanxi University of Science and Technology, China (201310708008, 201210708011).

摘要:

用高温熔融法制备了掺杂Sm2O3的CaO-CaF2-B2O3-SiO2(CFBS:Sm)发光玻璃材料, 并借助X射线衍射(XRD)谱、傅里叶变换红外(FTIR)光谱以及光致发光(PL)光谱等分析手段研究了玻璃基体中CaF2的摩尔分数及其结构、红外透过性能以及荧光性能的关系. XRD和FTIR测试表明, 玻璃基体中引入CaF2并未引起非晶结构的变化但其红外透过峰发生移动. 光谱学测试表明, CFBS:Sm发光玻璃在404 nm波长激发下出现对应于Sm3+离子位于566、603和650 nm的特征荧光峰, 其发光颜色为橙红色(x=0.531, y=0.371). 此外, 随着玻璃基体中CaF2摩尔分数的增加, CFBS:Sm发光玻璃的荧光发射强度、荧光寿命(Sm3+4G5/2能级)和荧光量子效率也表现出增大的趋势. 这种CFBS:Sm发光玻璃中荧光发射强度和荧光寿命的提高主要是由于玻璃基体中的CaF2替代CaO引起基体相互作用和声子能量降低、无辐射跃迁减弱造成的.

关键词: 稀土掺杂, 发光玻璃, 氟化钙, 光致发光, 荧光寿命, 量子效率

Abstract:

Aseries of luminescent glass composed of CaO-CaF2-B2O3-SiO2 doped with samariumoxide (CFBS: Sm) were prepared. The structure, infrared transmittance and fluorescent properties of the samples were investigated by X-ray diffraction (XRD), Fourier transforminfrared (FTIR) spectroscopy and photoluminescence (PL) measurements, respectively. The XRD patterns of the CFBS:S msamples showed that the glass matrix had a non-crystalline structure, while the FTIR spectra exhibited shifts of absorption wavelength sensitive to the structure and function of the samples. The PL spectra of the CFBS:Smglasses showed the characteristic emission of Sm3+ centered at 566, 603 and 650 nmunder 404 nmexcitation, and their luminescence color was red-orange (x=0.531, y=0.371). Furthermore, the intensity of emission and fluorescent lifetime of Sm3+ at 603 nm (4G5/2) increased with the molar ratio of CaF2 in the glass samples. The enhanced intensity of emission, fluorescent lifetime and quantumefficiency with increasing molar ratio of CaF2 may result fromthe reduction of phonon energy in the CFBS:S mglass because some CaF2 substitutes CaO in the glass matrix.

Key words: Rare earth doped, Luminescent glass, Calciumfluoride, Photoluminescence, Fluorescent life, Quantumefficiency

MSC2000: 

  • O644