水热法合成Gd2O3∶Dy3+纳米棒及发光性能

人工晶体学报, 2011, 40(6): 1440-1445.

水热法合成Gd2O3∶Dy3+纳米棒及发光性能

翟永清 ^1, , 刘亚红 ^2, , 游志江 ^3, , 邢瑞思 ^4, , 艾肖 ^5,

1.河北大学化学与环境科学学院,保定071002

2.河北大学化学与环境科学学院,保定071002

3.河北大学化学与环境科学学院,保定071002

4.河北大学化学与环境科学学院,保定071002

5.河北大学化学与环境科学学院,保定071002

基金项目: 国家自然科学基金(20675023)

关键词： Gd2O3∶Dy3+ , 纳米棒 , 水热合成 , 光致发光

Synthesis and Luminescent Properties of Gd2O3∶ Dy3+ Nanorods by Hydrothermal Method

以氢氧化钠为沉淀剂,采用水热方法制备了Gd2O3∶Dy3+纳米棒.通过红外光谱、扫描电镜及X射线衍射对前驱体及目标产物的物相结构、微观形貌进行了分析表征,通过荧光分光光度计测试了所得Gd2O3∶Dy3+的发光性能.结果表明:水热前驱体为六方相氢氧化钆(镝),经900℃焙烧得立方相的Gd2O3∶Dy3+.所得G d2O3∶Dy3为直径约100 nm,长度约500 nm～1μm的纳米棒.其激发光谱由一系列激发峰组成,峰值分别位于239 nm、279 nm、314 nm、353 nm,最强峰位于279 nm处；发射光谱主要由两部分组成,分别为460 ～500 nm的蓝光和560～590nm的黄绿光发射峰(带),均属于Dy3+的特征发射,且后者的强度远高于前者,因此,在紫外光激发下呈黄光发射.

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