Paper Title:
Investigation of Factors Induced the Non-Intrinsic Optical Properties for Water-Soluble CdSe Semiconductor Quantum Dots
  Abstract

For the purpose of investigating the factors induced the non-band-edge excitation optical properties of water-soluble CdSe semiconductor quantum dots (QDs), the initial molar ratio of Cd and Se(or Cd/Se), the temperature of crystal nucleation and growing, the time of the growth etc. are systematically studied in the fabricated process. The properties of the as-prepared nano-particles (NPs) have been characterized by ultraviolet-visible absorption spectra (UV-Vis), photoluminescence (PL) spectroscopy, X-ray powder diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS). The measured results show that it is possible to exist surface trapping, impurities and other defect energy states in the products with the non-band-edge excitation PL properties, and all the characteristics are involved with the different synthetic routes and prepared techniques.

  Info
Periodical
Materials Science Forum (Volumes 663-665)
Edited by
Yuan Ming Huang
Pages
437-440
DOI
10.4028/www.scientific.net/MSF.663-665.437
Citation
H. K. Qiu, Y. Shen, L. J. Wang, J. C. Zhang, K. F. Qin, "Investigation of Factors Induced the Non-Intrinsic Optical Properties for Water-Soluble CdSe Semiconductor Quantum Dots", Materials Science Forum, Vols. 663-665, pp. 437-440, 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: 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: Chun Gui Du
Abstract:Previous studies have indicated that Chinese fir glulam has many defects on surface: color is singleness, knot is more, surface is roughness,...
2033
Authors: Chong Lue Hua, Gui Cheng Wang, Hong Jie Pei, Gang Liu
Chapter 8: Modeling, Analysis, and Simulation of Manufacturing Processes
Abstract:Thermal stresses of grinding plays an important role on the fatigue and wear resistance of the component. A comprehensive analysis of thermal...
2211
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