摘要
以聚苯乙烯(PS)微球作为模板剂,采用溶胶-凝胶及煅烧处理等方法制备了三维有序大孔ZrO2材料。通过X射线衍射(XRD)以及扫描电镜(SEM)对其结构和形貌进行了表征。结果表明所制备的ZrO2材料为孔径约为180 nm的高度有序、堆叠紧密的三维有序大孔结构(3DOM)。对3DOM ZrO2的光谱分析表明:在宽禁带的ZrO2材料中存在着本征缺陷发光(氧空位缺陷)和杂质缺陷(主要杂质为TiO2)发光,掺杂浓度与基质的晶相结构对两种发光起到了至关重要的作用。对发光过程提出了简单的机理模型。
Three-dimensionally ordered macroporous (3DOM) ZrO2 inverse opal materials prepared by polystyrene (PS) colloidal crystal templating, using the sol-gel method, were successfully fabri- cated. The structure of 3 DOM ZrO2 was determined by X-ray diffraction (XRD) and scanning elec- tron microscope(SEM). The results show that the produced ZrO2 are arranged orderedly macropores with average diameter of 180 nm. The spectra show both intrinsic F centers emitter and impurity emitter exist in wide band gap ZrO2. The mechanism of the phosphorescence was formulated using a simplified scheme.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2013年第4期406-410,共5页
Chinese Journal of Luminescence
基金
国家自然科学基金(61205178)
辽宁省博士启动基金(20121073)
中央高校基本科研业务费专项资金(DC120101172)
大连民族学院大学生创新创业训练计划(G2012010)资助项目
关键词
三维有序大孔材料
ZRO2
胶晶模板法
发光
three-dimensionally ordered macroporous (3DOM)
ZrO2
colloidal crystal template
luminescence