Title :
Preparation and optical property of Co2+: CdS nanocrystals
Author :
Chen, S.Y. ; Yu, P. ; Zhang, J.J. ; Li, Y.L. ; Xie, R.S. ; Zhu, J.G. ; Xiao, D.Q. ; Jiang, M.
Author_Institution :
Coll. of Mater. Sci. & Eng., Sichuan Univ., Chengdu, China
Abstract :
Co doping CdS nanocrystals were synthesized in aqueous solution using mercaptoacetic acid as stabilizer. The prepared nanocrystals were examined using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) and UV-vis absorption spectroscopy (ABS). The cubic zinc blende nanocrystals were determined and the sizes were estimated by XRD. The compositions of the nanocrystals was confirmed by XPS, the resultes indiacated that Co2+ existed in the as-prepared nanocrystal. FTIR indicated that the doped as well as undoped nanocrystals were capped by mercaptoacetic acid molecules. Ultraviolet-visible absorption spectra indicated that Co2+ is located at the surface of the nanocrystals.
Keywords :
Fourier transform spectra; II-VI semiconductors; X-ray diffraction; X-ray photoelectron spectra; cadmium compounds; cobalt; doping profiles; infrared spectra; nanostructured materials; nanotechnology; semiconductor doping; ultraviolet spectra; visible spectra; wide band gap semiconductors; CdS:Co2+; FTIR spectroscopy; Fourier transform infrared spectroscopy; UV absorption spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; XPS; XRD; aqueous solution; cubic zinc blende nanocrystals; doping; mercaptoacetic acid; nanocrystal preparation; optical property; visible absorption spectroscopy; Doping; Electromagnetic wave absorption; Fourier transforms; Infrared spectra; Nanocrystals; Optical diffraction; Spectroscopy; X-ray diffraction; X-ray scattering; Zinc; CdS; absorption; doped; nanocrystals;
Conference_Titel :
Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4970-5
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2009.5307614
