摘要
Solvothermal technique, an one-step soft solution-processing route was successfully employed to synthesize single crystalline CdS nanowires in ethylenediamine medium at lower temperature (170 ℃ ) for 1-8 d. In this route, polyethylene glycol 400 (PEG400) was used as surfactant, which played a crucial role in preferentially oriented growth of semiconductor nanowires. Characterizations of as-prepared CdS nanowires by X-ray powder diffraction(XRD), transmission electron microscopy(TEM) indicate that the naonowires, with typical diameters of 20nm and lengths up to several micrometers, have preferential [001] orientation. Also, investigations into the physical properties of the CdS nanowires were conducted with UV-Vis absorption spectroscopy and photoluminescence emission spectroscopy. The excitonic photo-optical phenomena of the nanowires shows the potential in the practical applications.
Solvothermal technique, an one-step soft solution-processing route was successfully employed to synthesize single crystalline CdS nanowires in ethylenediamine medium at lower temperature （170 □） for 1-8 d. In this route, polyethylene glycol 400 （PEG400） was used as surfactant, which played a crucial role in preferentially oriented growth of semiconductor nanowires. Characterizations of as-prepared CdS nanowires by X-ray powder diffraction（XRD）, transmission electron microscopy（TEM） indicate that the naonowires, with typical diameters of 20nm and lengths up to several micrometers, have preferential [001] orientation. Also, investigations into the physical properties of the CdS nanowires were conducted with UV-Vis absorption spectroscopy and photoluminescence emission spectroscopy. The excitonic photo-optical phenomena of the nanowires shows the potential in the practical applications.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2006年第1期105-109,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(J1300A002) supported by the National Defense Fundamental Fund of China
Project(51410040305hk0214) supported by the Weaponry Equipment Pre-research Foundation of China
Project(90505008) supported by the National Natural Science Foundation of China
关键词
聚乙二醇
诱导模板
硫化镉
XRD
TEM
合成
单晶
纳米线
Ⅱ -Ⅵsemiconductor
cadmium sulfide
nanowires
single crystal
photoluminescence properties
