摘要
以白磷作为磷源、醋酸铟为铟源、硬脂酸为表面包覆剂、十八烯为溶剂,采用胶体化学法合成了InP量子点。X射线衍射(XRD)和透射电子显微镜(TEM)分析测试显示InP量子点属于立方闪锌矿结构,并且是直径约为5 nm的球状纳米晶。紫外可见光谱和荧光光谱分析表明,InP量子点表现出明显的激子吸收和带边发射特征,荧光发射光谱在415~517 nm范围内连续可调,呈现明显的量子尺寸效应。
The InP quantum dots(QDs) were synthesized via a colloidal chemical method with white phosphorus(P4),indium acetate(In(Ac)3),stearic acid and 1-octadecene(ODE) as phosphorus source,indium source,surfactant and solvent,respectively.The structure,size and shape of the quantum dots were analyzed by XRD and TEM.The resulting InP QDs were also characterized by UV-Visible absorption and fluorescence spectroscopy.The title material exhibits well-resolved absorption and emission properties.Meanwhile,the InP QDs emit at 415~517 nm in the electromagnetic spectrum showing obvious quantum size effect.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2012年第2期342-346,共5页
Chinese Journal of Inorganic Chemistry
基金
国家重大科学基础研究计划(No.2007CB9-36001)
国家高技术研究发展计划(863计划)(No.2007AA03Z301)
国家自然科学基金(No.20771032
61076040)资助项目
关键词
半导体纳米晶
InP量子点
白磷
荧光光谱
semiconductor nanocrystals
InP quantum dots
white phosphorus
fluorescence spectra