Preparation and luminescent propeties of nanocrystalline ZrO2-Al2O3：Dy3+
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Corresponding author:
LIU Chun-xiang, lushuch.En63@yahoo.com.cn
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Received Date:
2009-04-20
Accepted Date:
2009-05-20
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Abstract
In order to study the phase change and luminescence properties of nanocrystalline ZrO2-Al2O3:Dy3+ an determine whether energy transfers between ZrO2-Al2O3 and Dy3+,the nanocrystalllne ZrO2-Al2O3:Dy3+ powders were prepared by means of co-precipitation method.The powders were characterized by X-ray diffraction.As the increasing of the sintering temperature,the crystalline phase was changed.The phase of power was analyzed.The results show ZrO2-Al2O3 were solution at 1100℃ to 1200℃,but ZrO2 and Al2O3 were m a small part of solution at 1300℃.Emission spectra of Dy3+ were observed under the excitation of 353nm.Dy3+-ion emission energy is rich.The emission spectra of the main emission peak are at 483nm and 583nm.Excitation spectra were obtained by monitoring 483nm emission.Because of the excitation spectrum including the absorption from the matrix,the energy transfer between the matrix of ZrO2-Al2O3 and Dy3+ occurred.
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