ZnS纳米微粒的形貌结构对其光学特性的影响  

Influence of the Structure and Morphology of ZnS Nanoparticle on Its Optical Properties

作　　者：闵嘉华[1] 桑文斌[1] 史伟民[1] 钱永彪[1] 陈宗高[1] 王灵玲[1] 刘引烽[1] 

机构地区：[1]上海大学材料科学与工程学院,上海201800

出　　处：《光学学报》2003年第3期257-260,共4页Acta Optica Sinica

基　　金：国家自然科学基金 (6 98710 17)资助课题

摘　　要：报道在聚乙烯醇 (PVA)膜上采用离子络合法镶嵌的ZnS纳米微粒的形貌结构与光学特性。透射电子显微镜结果表明 ,在聚乙烯醇膜中的ZnS纳米微粒分布比较均匀 ,粒径可控制在 2～ 7nm的范围内 ;电子衍射分析表明 ,ZnS纳米微粒具有类似于 β ZnS体材料的晶体结构。室温下的光发射峰的位置在 4 14～ 4 4 0nm范围内。着重分析了ZnS纳米形貌结构与其发射波长和强度之间的关系 ,并探讨了其不同的发射机理。The structural and optical properties of ZnS nanoparticles embedded in PVA films by an ion complexation method are reported. The results of TEM exhibit that the ZnS nanoparticles are well distributed in PVA films and their size can be controlled in the range of 2 nm-7 nm. ED analysis show that the ZnS nanoparticles have the similar structure of (β-ZnS bulk material). Emission peaks of the nanoparticles vary in the range of 414 nm-440 nm at room temperature, depending on the experimental conditions. The relationships between ZnS nanoparticle morphologies and the PL emission peaks, intensity are emphatically discussed and their different mechanisms of luminescence are explored.

关 键 词：低维物理 纳米材料 离子络合法 硫化锌 聚乙烯醇 

分 类 号：O734[理学—晶体学]