Thermoluminescent spectra of MgSO4 doped with Dy and Mn, P, Cu

被引：0

作者：

Zhang, Chun-Xiang ^{[1
]}

Tang, Qiang ^{[1
]}

Luo, Da-Ling ^{[1
]}

机构：

[1] Department of Physics, Zhongshan University, Guangzhou 510275, China

来源：

Wuli Xuebao/Acta Physica Sinica | 2000年 / 49卷 / 10期

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摘要：

Thermoluminescent 3D spectra of MgSO4 doped with Dy and Mn, P, Cu were measured. It is observed that the spectral wavelengths of MgSO4:Dy are related to the energy transitions of Dy3+ ions which play the role of luminescent centers. The glow peaks at 140°C and 190°C about 660 nm broad wavelength band were observed in MgSO4 doped with Mn. It means that Mn promotes to form the new luminescent centers. When MgSO4 was co-doped with Dy and Mn, the main glow peak occurred at 380°C in 480 nm and 580 nm wavelengths and the glow peaks in 480 nm and 580 nm below 300°C and all glow peaks in 660 nm are strongly suppressed. The emission spectra of the MgSO4:Dy, Mn phosphor show the characteristic wavelengths of Dy3+ ions. Therefore, Dy3+ ions remain the major luminescent centers and Mn plays an important role for energy transfer to the Dy ions in the MgSO4:Dy, Mn phosphor. Comparing the 3D glow curves between MgSO4:Dy and MgSO4:Dy, P shows that the 260°C glow peak of MgSO4:Dy shifts to 283°C with high intensity while the temperature of glow peak at 360°C remains unchanged. The relative intensities of glow peaks between 480 nm band and 580 nm band have been altered while the temperature of 283°C glow peak is unchanged after MgSO4 was codoped with Dy and P, Cu.

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页码：2072 / 2077