Alternative TitlePreparation and Spectrum Characteristics of (Y, Gd)2O3:Eu^3+ Nano-particles by Ammonium Bicarbonate Co-precipitation Method
郭易芬; 马伟民; 闻雷; 沈世妃; 王华栋; 尹凯
Source Publication人工晶体学报
Abstract以碳酸氢铵作沉淀剂采用共沉淀法制备了(Y,Gd)2O3∶Eu^3+纳米粉体。用FT-IR、DTA/TG、XRD和SEM对样品进行了表征,并用荧光光度计分析了样品的发射光谱。结果表明:碳酸氢铵为沉淀剂,先驱沉淀物经150℃干燥,800℃煅烧保温2 h时,合成了近似球形、粒径均匀、约为15-20 nm、分散性好的(Y,Gd)2O3∶Eu^3+纳米粒子。随着掺入Eu^3+浓度的增加,发射峰强升高;当掺入5 mol%的Eu^3+时,峰强最大;当Eu^3+的含量高于5 mol%时出现了浓度猝灭,峰强反而降低。
Other Abstract(Y, Gd)2O3:Eu^3+ nanopowders were prepared by co-precipitation method using ammonium bicarbonate as precipitating agent. FT-IR, XRD, TEM, SEM, DTA/TG and SEM were used to charaeterize the samples. The emission spectrums of the samples were analyzed by the fluor-photometer. The results show that the powders are approximately spherical particles with even particle size of about 15-20 nm and good dispersivity under calcining at 800 ℃ for 2 h and drying at 150 ℃. With the increasing of Eu^3+ concentration, the peak intensity enhanced. When the concentration of Eu^3+ is 5 mol%, the emission peak of ^5D0→^7F2 transition has the strongest peak intensity. However, the peak intensity decreased when the doping concentration of Eu^3+ is higher than 5 tool%, which induced by the concentration quenching.
Keyword共沉淀法 (Y,Gd)2O3:Eu^3+纳米粒子 光谱特性 浓度猝灭
Indexed ByCSCD
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Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
郭易芬,马伟民,闻雷,等. 碳酸氢铵共沉淀法制备(Y,Gd)2O3:Eu^3+纳米材料及光谱特性[J]. 人工晶体学报,2009,38.0(003):746-750.
APA 郭易芬,马伟民,闻雷,沈世妃,王华栋,&尹凯.(2009).碳酸氢铵共沉淀法制备(Y,Gd)2O3:Eu^3+纳米材料及光谱特性.人工晶体学报,38.0(003),746-750.
MLA 郭易芬,et al."碳酸氢铵共沉淀法制备(Y,Gd)2O3:Eu^3+纳米材料及光谱特性".人工晶体学报 38.0.003(2009):746-750.
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