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煅烧温度对Cu掺杂ZnO纳米粉体的制备及发光性能的影响
引用本文:单民瑜,陈卫星,王丽玲,刘秀兰.煅烧温度对Cu掺杂ZnO纳米粉体的制备及发光性能的影响[J].发光学报,2012,33(11):1204-1208.
作者姓名:单民瑜  陈卫星  王丽玲  刘秀兰
作者单位:单民瑜:西安工业大学 材料与化工学院, 陕西 西安 710032
陈卫星:西安工业大学 材料与化工学院, 陕西 西安 710032
王丽玲:西安工业大学 材料与化工学院, 陕西 西安 710032
刘秀兰:西安工业大学 材料与化工学院, 陕西 西安 710032
基金项目:西安-应用材料创新基金(XA-AM-200912)资助项目
摘    要:在PVA溶液中制备ZnO∶Cu纳米粉体的前驱体,经过煅烧获得ZnO∶Cu纳米粉体,考察煅烧温度对制备过程及发光性能的影响。利用XRD、TEM分析了产物的结构和形貌,XRD分析结果表明,当煅烧温度高于500℃时,可以使PVA完全分解,制备出具有六角纤锌矿结构的ZnO∶Cu粉体。TEM结果表明,粉体呈球形,大小均匀,分散性好,平均粒径为20~25 nm。在342 nm波长光的激发下,在ZnO∶Cu的室温PL光谱中可以观察到两个中心波长位于458 nm和486 nm的较强的蓝光发射峰,经400℃煅烧处理的ZnO∶Cu纳米粉体的蓝光发射最强。煅烧后的ZnO∶Cu只有微弱的绿光发射(510~530 nm),Cu的掺杂使ZnO的绿光发射变为蓝光发射。蓝紫光的发射波长随煅烧温度的升高产生明显的红移,由300℃时的404 nm红移至600℃时的422nm,发射强度随温度升高先增大后减小。

关 键 词:氧化锌  掺杂  聚乙烯醇  煅烧温度  光致发光
收稿时间:2012/7/30

Effect of Calcination Temperature on Preparation and Luminescent Properties of Cu Doped ZnO Nano-powder
SHAN Min-yu,CHEN Wei-xing,WANG Li-ling,LIU Xiu-lan.Effect of Calcination Temperature on Preparation and Luminescent Properties of Cu Doped ZnO Nano-powder[J].Chinese Journal of Luminescence,2012,33(11):1204-1208.
Authors:SHAN Min-yu  CHEN Wei-xing  WANG Li-ling  LIU Xiu-lan
Institution:(School of Materials and Chemical Engineering,Xi’an Technological University,Xi’an 710032,China)
Abstract:The precursors of ZnO∶Cu nano-powder were prepared in PVA aqueous solution. Then the products were obtained by calcining with different temperature. The effect of calcination tempe-rature on preparation and the photoluminescence of the ZnO∶Cu nano-powder was investigated. The products dealed with different temperature were characterized by XRD, TEM and PL. The results of XRD indicated that when the clacination temperature was above 500 ℃, the products had a crystal structure of hexagonal wurtzite, while the polymer PVA decomposed completely. The TEM result showed that the nano-powder was spherical with a uniform size of 20~25 nm and good dispersibility. Two blue emission peaks centered at 458 nm and 486 nm were observed in the room temperature PL spectra excited with 342 nm light. The product calcined in 400 ℃ had the most strongest blue emission, while the green emissions (510~530 nm) became weak and changed into blue emission. With the clacination temperature increasing, the violet-blue spectral had an obvious red shift from 404 nm to 422 nm. The emission intensity increased firstly and then decreased.
Keywords:zinc oxide  doping  PVA  calcination temperature  photoluminescence
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