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采用高分子网络凝胶法,在较低温度下制备了YAG:Er3+纳米晶粉体。分别用热重-差热分析(TG-DSC)、X射线衍射(XRD)、扫描电子显微镜(SEM)以及激发和发射光谱对样品进行了表征。结果表明:石榴石晶相的形成温度为880oC,与YAG纳米晶粉体相比,用Er3+代替Y3+后,YAG:Er3+纳米晶粉体还是以石榴石晶相为主,未发生明显变化;YAG:Er3+纳米晶粉体有丰富的吸收谱线,并且在260nm激发光激发下YAG:Er3+纳米晶粉体可以发射出377nm紫光,可以作为紫光光源的考虑对象。
YAG: Er3 + nanocrystalline powders were prepared at lower temperature by polymer network gel method. The samples were characterized by TG-DSC, X-ray diffraction (XRD), scanning electron microscopy (SEM) and excitation and emission spectra, respectively. The results show that the formation temperature of the garnet crystal phase is 880oC. Compared with the YAG nanocrystalline powders, the YAG: Er3 + nanocrystalline powders are mainly composed of garnet crystal phases with no Er3 + substitution. YAG : Er3 + nanocrystalline powders have abundant absorption spectra, and YAG: Er3 + nanocrystalline powders can emit 377 nm violet light under the excitation of 260 nm excitation light, which can be considered as a violet light source.