发光学报, 2019, 40 (12): 1486, 网络出版: 2020-01-09   

水热法合成GdInO3∶Yb3+/Ho3+荧光粉及其上转换发光性能

Hydrothermal Systheis and Upconversion Emission Properties of GdInO3∶Yb3+/Ho3+ Phosphors
作者单位
江西理工大学 化学化工学院, 江西 赣州 341000
摘要
采用水热过程与进一步热处理的方法合成了六方相GdInO3∶Yb3+/Ho3+荧光粉。采用X射线粉末衍射(PXRD)对晶体结构和相纯度进行了检测, 结构精修结果表明, 获得的样品为纯的六方相GdInO3∶Yb3+/Ho3+荧光粉。用扫描电镜(SEM)和透射电镜(TEM)对合成材料的形貌进行了表征。在980 nm激光激发下, 观察到Ho3+离子的539 nm绿光发射(5S2/5F4→5I8)和665 nm红光发射(5F5→5I8)。此外, 还发现通过改变Ho3+浓度得到了从绿光到黄光的可调发光特性。可调发光是由交叉弛豫(5F4/5S2+5I7→5F5+5I6)过程引起的。GdInO3∶Yb3+/Ho3+是一种很好的上转换材料, 可用于照明和显示领域。
Abstract
Yb3+ and Ho3+ codoped hexagonal GdInO3 phosphor has been synthesized by hydrothermal process and further heat treatment. The crystal structure and phase purity were checked by means of powder X-ray diffraction (PXRD), and the refinement results showed that pure phase GdInO3∶Yb3+/Ho3+phosphors were obtained. The morphology of the synthesized materials was characterized by SEM and TEM. The upconversion (UC) luminescence properties of the phosphor were investigated. Green emission at 539 nm (5S2/5F4→5I8) and red emission at 665 nm (5F5→5I8) of Ho3+ were observed upon 980 nm laser excitation. Moreover, it has been found that tuneable emission characteristics from green to yellow were obtained via the Ho3+ concentration modulation. The tunable emission is due to the cross-relaxation process (5F4/5S2+5I7→5F5+5I6). The GdInO3∶Yb3+/Ho3+ can be a good candidate for upconversion material in lighting and display fields.

廖金生, 孔莉芸, 王明华, 彭光怀. 水热法合成GdInO3∶Yb3+/Ho3+荧光粉及其上转换发光性能[J]. 发光学报, 2019, 40(12): 1486. LIAO Jin-sheng, KONG Li-yun, WANG Ming-hua, PENG Guang-huai. Hydrothermal Systheis and Upconversion Emission Properties of GdInO3∶Yb3+/Ho3+ Phosphors[J]. Chinese Journal of Luminescence, 2019, 40(12): 1486.

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