Paper Title:
Synthesis of High-Performance Aqueous CdSe Quantum Dots Based on Combination of Se Source as Vapor-Phase and Hydrothermal Method
  Abstract

High performance aqueous CdSe quantum dots (QDs) have been prepared by combination of Se source as vapor-phase and hydrothermal method. The main advantages of this approach included: one is to utilize H2Se vapor as a higher pure selenium source to make the prepared QDs have little other impurities, another is to obtain the QDs with characteristics of more rapid growth in the hydrothermal reaction. The as-prepared products have been characterized by ultraviolet-visible absorption spectra, photoluminescence spectroscopy (PL), X-ray powder diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and energy dispersive spectroscopy (EDS) analysis etc. The results show the as-synthesized water-soluble CdSe nanoparticles possess higher purity and quantum yields (QY), favorable narrow photoluminescence band with full width of half-maximum (FWHM) down to 40 nm, better photo-stability, and less synthetic time as compared with aqueous CdSe QDs obtained by other methods.

  Info
Periodical
Materials Science Forum (Volumes 663-665)
Edited by
Yuan Ming Huang
Pages
96-99
DOI
10.4028/www.scientific.net/MSF.663-665.96
Citation
H. K. Qiu, Y. Shen, L. J. Wang, J. C. Zhang, K. F. Qin, "Synthesis of High-Performance Aqueous CdSe Quantum Dots Based on Combination of Se Source as Vapor-Phase and Hydrothermal Method", Materials Science Forum, Vols. 663-665, pp. 96-99, 2011
Online since
November 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: J.W. Paek, Beom Seob Kim, Deug Joong Kim
Abstract:Ceramic foams containing MoSi2 were prepared by a self-blowing process of poly-silsesquioxane with MoSi2 as filler. Ceramic foams prepared by...
129
Authors: Makoto Hayashi, Shinobu Okido
Abstract:In the X-ray diffraction method, the diffraction intensity, the half-value width, the residual stress and the amount of residual austenitic...
19
Authors: Murat Aydın, L.S. Ozyegin, Faik N. Oktar, E.Z. Erkmen, O. Anzabi, Kārlis A. Gross
Abstract:In order to overcome the fragility and to improve the physical stability of hydroxyapatite (HA) on the implant, 5, 10, and 15 % yttria...
631
Authors: Jin Feng Bai, Shi Yong Wu, Shao Feng Li, Wei Chen, Yan Li
Abstract:A novel tube-form asymmetrical carbon membrane based on phenol-formaldehyde resin (PFR) is proposed in this paper. The membrane is composed...
457
Authors: Hu Liu, Hong Yan Zhu, Qian Qian Shang, Guo Min Xiao
Chapter 17: Surface Engineering/Coatings
Abstract:In this study, water-based polyurethane coating with anti-graffiti property was prepared. The pot life and volatilization process of volatile...
2993