溶液燃烧法制备纳米LaAlO_(3):Dy3+及发光性能研究  

Preparation and luminescent properties of LaAlO_(3):Dy^(3+) nanoparticles by solution combustion method

作　　者：储刚[1] 吴静 范华风 孟竺 张静 吴钳 CHU Gang;WU Jing;FAN Huafeng;MENG Zhu;ZHANG Jing;WU Qian(School of Petrochemical Engineering,,Liaoning Petrochemical University,Liaoning Fushun 113001,China;Engineering Training Center,Liaoning Petrochemical University,Liaoning Fushun 113001,China;Continual Education Institute,Liaoning Petrochemical University,Liaoning Fushun 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]辽宁石油化工大学工程训练中心,辽宁抚顺113001 [3]辽宁石油化工大学继续教育学院,辽宁抚顺113001

出　　处：《光电子．激光》2021年第10期1124-1128,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(21573101);辽宁省高等学校创新人才支持项目(LR2017011)资助项目。

摘　　要：通过溶液燃烧法以LaAlO_(3)·6H_(2)O,Dy(NO_(3))_(3)·9H_(2)O和Al(NO_(3))_(3)·9H_(2)O及C_(2)H_(5)NO_(2)为原材料制备纳米粉体La1-xDyxAlO_(3)(x=0,0.01,0.02,0.03,0.04,0.05)。采用X射线衍射、扫描电子显微镜、紫外-可见漫反射光谱和荧光光谱研究晶体结构、形貌、发光强度等内容,结果表明,通过溶液燃烧法在800℃下煅烧4 h,Dy^(3+)离子进入到LaAlO_(3)晶格中,荧光光谱分析结果表明La1-xDyxAlO_(3)粉体在370 nm的激发波长下,发光主峰位于423 nm处,在掺杂比例为0.03时发光强度最高,其禁带宽度5.54 eV与理论值5.6 eV相近。The nano-powder La_(1-x)Dy_(x)AlO_(3)(x=0,0.01,0.02,0.03,0.04,0.05)were prepared by solution combustion method with La(NO_(3))_(3)·6H_(2)O,Dy(NO_(3))_(3)9H_(2)O and C_(2)H_(5)NO_(2)as raw materials.XRD,SEM,UV-VIS diffuse reflectance spectroscopy and fluorescence spectroscopy were used to study the crystal system,morphology and luminescence intensity.The results show that Dy;ions enter into the lattice of LaAlO3 after calcined at 800℃for 4 h by solution combustion method,The results of fluorescence spectrum analysis show that the main emission peak of La;Dy;AlO;powder is at 423 nm at the excitation wavelength of 370 nm and the band gap was 5.54 eV close to the theoretical value 5.6 eV.

关 键 词：溶液燃烧法 钙钛矿 LaAlO_(3):Dy^(3+) 

分 类 号：O614[理学—无机化学]