α-ZnS纳米粒子的制备及其光致发光和拉曼特性  

Synthesis of α-ZnS Nanoparticles and Their Photoluminescence and Raman Properties

作　　者：张东凤[1] 张亚辉[1] 郭林[1] 张蕊[1] 殷鹏刚[1] 张琦[1] 

机构地区：[1]北京航空航天大学应用化学系,北京100083

出　　处：《物理化学学报》2007年第12期1985-1988,共4页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20673009);"973"计划(2006CB932300)资助项目

摘　　要：以湿化学法合成了直径约35nm的蓬松的α-ZnS球形纳米粒子.XRD与TEM结果表明,硫化锌球形纳米粒子由粒径约6nm的二次晶粒组成.光致发光光谱表明,所得样品分别在约430nm及360nm处各有一个发射谱带,前者源于ZnS的表面缺陷发射,后者可被指认为六方相ZnS的近带边发射.拉曼表征结果表明,在较高激光功率的照射下,没有观察到样品的光氧化现象,表明所制备的硫化锌纳米粒子结构较为稳定.Nanoscaled α-ZnS spheres about 35 nm in diameter were synthesized by a chemical solution way. XRD and TEM results showed that the nanoscaled ZnS spheres were made up of secondary nanoparticles with diameters about 6 nm. Two emission bands were observed in the photoluminescence （PL） spectrum of ZnS nanocrystals, one centered at 430 nm while the other at 360 nm. The former was attributed to the surface trapped emission, while the latter was assigned to the near band-edge emission. The Raman spectra characterization showed that no photodecomposition was observed under the strong laser irradiation, which indicated that the as-prepared ZnS nanocrystals were of high chemical stability.

关 键 词：ZNS 纳米粒子 光致发光 拉曼光谱 

分 类 号：O614.241[理学—无机化学]