发明授权
US07407604B2 Nanostructured re-doped SiO2-base fluorescent materials and methods for production of same
有权
纳米结构的重掺杂SiO2基荧光材料及其制备方法
- 专利标题： Nanostructured re-doped SiO2-base fluorescent materials and methods for production of same
- 专利标题（中）： 纳米结构的重掺杂SiO2基荧光材料及其制备方法
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申请号： US11029556申请日： 2005-01-05
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公开(公告)号： US07407604B2公开(公告)日： 2008-08-05
- 发明人: Bernard H. Kear , Christopher D. Haines , George H. Sigel , Lisa C. Klein , Varadh Ranganathan
- 申请人： Bernard H. Kear , Christopher D. Haines , George H. Sigel , Lisa C. Klein , Varadh Ranganathan
- 申请人地址： US NJ New Brunswick
- 专利权人： Rutgers The State University of New Jersey
- 当前专利权人： Rutgers The State University of New Jersey
- 当前专利权人地址： US NJ New Brunswick
- 代理机构： Watov & Kipnes, P.C.
- 代理商 Kenneth Watov
- 主分类号： C09K11/02
- IPC分类号： C09K11/02 ; C09K11/59 ; C09K11/64 ; C09K11/79
摘要：
A new class of nanostructured RE-doped SiO2-base materials that display superior fluorescence properties is provided. In particular, high gain combined with a broad and flat spectral band width is observed in material composed of a high fraction of a nano-dispersed metastable silicate phase in a glassy SiO2 matrix, produced by partial devitrification (crystallization) of several glassy Al2O3/Er2O3- and Y2O3/Er2O3-doped SiO2 compositions. Also, a highly deconvoluted spectral emission, with several prominent peaks, is observed in completely devitrified material, consisting of a uniform nano-dispersion of an equilibrium silicate phase in a crystobalite SiO2 matrix. Such enhanced fluorescence properties were observed in heat treated nanopowders prepared by vapor-phase, solgel, rapid solidification, and spray-pyrolysis methods.