摘要
采用单分子前驱体热分解的方法合成了单分散CdS纳米晶,以CdS纳米晶作为核,在CTAB辅助下,对其表面进行修饰,荧光光谱表明CdS/ZnO核壳结构被成功合成。考查了温度对包覆的影响,结果表明,随着温度的升高晶体结晶越好,包覆越来越完全,ZnO包覆在CdS纳米晶的表面而掩盖了CdS纳米晶的缺陷,使得缺陷发光减弱而带隙发光增强。
Well-dispersed CdS nanoparticle was synthesized via thermal decomposmon oi organometamc precu, sors in coordinating solvents. TEM images indicated that the size of CdS was about 12nm. CdS/ZnO core/shell structures were constructed by coating the CdS core with a layer of ZnO using CTAB as surfactant. Lumines- cence spectra suggested that CdS/ZnO was successfully synthesized. Compared to CdS nanoparticles, the band gap emission of CdS/ZnO was greatly improved with the temperature rising, which contributed to that the shell of ZnO modified the surface of CdS core and reduced the surface defect.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第6期791-794,共4页
Journal of Functional Materials
基金
安徽省教育厅自然科学基金重点资助项目(KJ2011Z368)
