摘要
利用静电纺丝和高温煅烧相结合的方法制备了一维Eu^(3+)掺杂In_2O_3无机纳米纤维,并对其发光性能和发光机理进行研究。借助SEM、TG、XRD和EDX对样品的形貌、热分解、晶相和成分进行分析,利用荧光分光光度计测试了样品在室温下的光致发光性能。结果显示,静电纺Eu^(3+)掺杂前驱体纤维成型良好,经700℃煅烧5 h制备的In_2O_3∶Eu^(3+)纳米纤维仍保持纤维状形貌,但纤维直径与前驱体纤维相比明显减小;样品XRD衍射峰均与立方铁锰矿型In2O3的衍射峰一致,没有出现Eu_2O_3的衍射峰,样品EDX能谱分析表明煅烧后样品中含有In、O、Eu元素,且Eu含量与实际掺杂浓度接近。样品的室温发射光谱显示,经290 nm光激发后,在597 nm、612 nm和629 nm处出现Eu3+的发射峰,其中612 nm处的发射峰强度最大。
One-dimensional Eu（3＋）-doped In2O3 inorganic nanofibers were fabricated by electrospinning and high temperature calcination,also,the luminescent property and mechanism were studied. The morphology,thermal decomposition,crystal structure and component of the samples were characterized by SEM,TG,XRD and EDX. The photoluminescent property at room temperature was measured by fluorescence spectrophotometer. The research indicated that the formation of electrospun Eu3＋-doped precursor nanofibers was favorable,In2O3∶ Eu^（3＋）nanofibers made by calcining at 700 ℃ for 5 h still remained fibrous appearance,however,the fibre diameter decreased obviously in comparison with the precursor fibers. XRD diffraction peaks of the samples were consistent with those of cubic bixbyite In2O3,no diffraction peaks of Eu2O3 were observed. EDX spectrum analysis showed that the calcined samples contained In,O and Eu elements,and Eu doping ratio was close to the actual content. The emission spectra of the samples under the excitation of 290 nm ultravidet ray at room temperature demonstrated that the characteristic emission peak of Eu3＋appeared at 597 nm,612 nm and 629 nm,in which the maximum intensity of emission peak was at 612 nm.
出处
《稀土》
EI
CAS
CSCD
北大核心
2016年第2期38-43,共6页
Chinese Rare Earths
基金
国家高技术研究发展计划(863)资助项目(2012AA030313)
江苏省产学研联合创新基金项目(BY2012068)
教育部长江学者和创新团队发展计划项目(IRT1135)
江苏省科技支撑计划(工业)项目(SBE201201094)
江苏省2013年度普通高校研究生科研创新计划项目(CXLX13_742)
