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采用均相沉积法制备了不同Er3+ 离子浓度掺杂的Y2 O3纳米晶 ,应用XRD ,SEM和PL光谱对该体系材料进行了表征 .在Y2 O3:Er3+ 纳米材料体系中 ,观察和研究了Stokes及anti StokesPL谱强度与Er3+ 离子摩尔浓度变化的关系 ,当Er3+ 离子浓度为 2 0mol%时 ,anti StokesPL强度最强 .粉末XRD和SEM照片分别表明 :制备的Y2 O3:Er3+ 纳米材料具有立方相结构 ,且粒径分布均匀 .实验结果证明 :anti StokesPL来自于这个体系中的双光子吸收过程
Y2 O3 nanocrystals doped with different concentrations of Er3 + ions were prepared by homogeneous deposition method, and characterized by XRD, SEM and PL spectroscopy. In the system of Y2O3: Er3 + nanomaterials, Stokes and anti StokesPL spectrum intensity and Er3 + ion molar concentration changes, when Er3 + ion concentration of 20mol%, anti StokesPL intensity strongest.Powder XRD and SEM photographs show that: prepared Y2O3: Er3 + nanomaterials have a cubic phase structure, And the particle size distribution is uniform.The experimental results show that anti StokesPL comes from the two-photon absorption process in this system