【摘要】 采用水热法合成了不同钇掺杂量的BaZrO3中空微球,并通过TEM,XRD和SEM等手段对样品进行了表征.结果表明,样品均为中空微球,钇掺杂进入BaZrO3晶格,产物均具有立方钙钛矿型结构.中空微球的粒径随钇掺杂量的增加由180 nm增大到300 nm.钇掺杂量小于3%时,可得到纯相.不同掺杂量的中空微球在410 nm光激发下发出波长为503 nm的蓝光,并且在钇掺杂量为0～3%范围内,随着钇掺杂量的增加发光强度逐渐增强.更多还原

【Abstract】 Y doped BaZrO3 hollow microspheres with different doping amounts were hydrothermally synthesized and characterized by TEM,XRD and SEM.The results show that Y was successfully introduced into the lattice and replaced the Zr at B position of perovskite.The mean particle size varied from 180 nm to 300 nm by elevating the Y content.Pure cubic perovskite phase formed when the doping amount of Y within 3%(molar fraction).When excited by 410 nm laser,these hollow microspheres emitted 503 nm light at room temperature.The photoluminescence intensity was positively related to Y doping amount due to the increased oxygen vacancies that were induced by Y doping.更多还原