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微乳液法制备(Y,Gd)2O3:Eu^3+纳米粒子及光谱特性
Alternative TitlePreparation and optical spectrum characterisitics of (Y, Gd)eO3:Eu^3+ nanoparticles by microemulsion
沈世妃; 马伟民; 闻雷; 郭易芬; 刘晶
2008
Source Publication中国有色金属学报
ISSN1004-0609
Volume18.0Issue:010Pages:1931-1936
Abstract采用反相微乳液法制备(Y,Gd)2O3:Eu3+纳米粉体。通过XRD、TG/DSC、SEM、TEM、PL等手段分别对样品的晶化过程、晶粒尺寸、粉体形貌以及发光性能进行分析。结果表明:晶粒尺寸随着晶化温度提高而增加,样品在800℃晶化完全。当乳液浓度为0.37mol/L时所得粉体颗粒呈近似球形,一次粒径尺寸约20nm。样品在612nm监控光下得到的激发光谱是宽带谱,对应着Eu3+-O2-的电荷迁移带跃迁。发射光谱的特征峰位于612nm处,是由于Eu3+离子的5D0-7F2跃迁造成的。当Eu的原子分数大于10%时发生浓度猝灭,导致特征峰强度降低。
Other Abstract(Y, Gd)2O3:Eu^3+ nanoparticles were prepared by reverse microemulsion method. The crystallization process, grain size, morphology and photoluminescence properties of the sample were characterized by XRD, TG/DSC, SEM, TEM and PL. The results show that the grain size increases with increasing crystallization temperature and the complete crystallization temperature of the precursor is 800 ℃. The particles are near-spherical with the primary size of 20 nm when the initiate concentration is 0.37 mol/L. The excitation spectra of (Y, Gd)2O3:Eu^3+ is observed by monitoring at 612 nm, and there is a wide band which is due to the charge transfer band (CTB) of Eu^3+-O^2-. The characteristic peak of (Y, Gd)2O3:Eu^3+ locates at 612 nm which is caused by ^5D0-^7F2 transition of Eu^3+ excited by 237 nm. When the atomic content of Eu is above 10%, the concentration quenching occurs and it leads to the intensity decreasing of the characteristic peak.
Keyword反相微乳液 (Y,Gd)2O3:Eu3+纳米粒子 发光性能 浓度猝灭
Indexed ByCSCD
Language中文
CSCD IDCSCD:3454774
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/142494
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
沈世妃,马伟民,闻雷,等. 微乳液法制备(Y,Gd)2O3:Eu^3+纳米粒子及光谱特性[J]. 中国有色金属学报,2008,18.0(010):1931-1936.
APA 沈世妃,马伟民,闻雷,郭易芬,&刘晶.(2008).微乳液法制备(Y,Gd)2O3:Eu^3+纳米粒子及光谱特性.中国有色金属学报,18.0(010),1931-1936.
MLA 沈世妃,et al."微乳液法制备(Y,Gd)2O3:Eu^3+纳米粒子及光谱特性".中国有色金属学报 18.0.010(2008):1931-1936.
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