Synthesis and photoluminescence of Y and Cd co-doped ZnO nanopowder  

钇、镉共掺杂氧化锌纳米粉体的合成及光学性能(英文)

作　　者：宋季岭[1] 郑佳红[1,2] 赵真[1] 周柏玉[1] 连建设[1] 

机构地区：[1]吉林大学汽车材料教育部重点实验室,长春130025 [2]吉林师范大学环境友好材料制备及应用省部共建教育部重点实验室,四平136000

出　　处：《Transactions of Nonferrous Metals Society of China》2013年第8期2336-2340,共5页中国有色金属学报（英文版）

基　　金：Project(2010CB631001) supported by the National Basic Research Program of China;Project(20121098) supported by the Foundation from of Key Laboratory of Preparation and Applications of Environmental Friendly Materials,Ministry of Education,China;Project supported by Graduate Innovation Fund of Jilin University,China

摘　　要：Y and Cd co-doped ZnO nanopowders were prepared via chemical precipitation method in order to modify the band gap and increase the luminescent intensity. The structures and optical properties of the as-synthesized samples were characterized by X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS） and photoluminescence （PL）. The effects of Y and Cd ions on the optical properties of the samples were studied. Doping of Y into ZnO evidently increases the intensity of UV emission, or co-doping of Y and Cd enhances the UV emission, narrows the band gap of ZnO and hence red shifts the UV emission at the same time. Therefore, Y and Cd co-doped ZnO nanopowders exhibit an intense violet emission in the room temperature PL spectrum, which could be a potential candidate material for optoelectronic applications.为了研究能隙修改和发光强度之间的关系,通过化学共沉淀法制备钇、镉共掺杂的氧化锌纳米粉体。采用XRD、XPS及PL对样品的晶体结构和光学性能进行研究。通过对钇、镉离子对氧化锌光学性能影响的研究发现,钇的掺入能够有效地增强氧化锌的紫外发光,钇、镉共掺杂在增强发光的同时,还使得氧化锌的带隙窄化,使得紫外发光红移,从而使得样品的室温光致发光图谱呈现出增强的紫光发射。该材料有望应用在制备光电器件方面。

关 键 词：ZnO nanopowders chemical precipitation optical properties 

分 类 号：O614.241[理学—无机化学] TB383.1[理学—化学]