Skip to main content

Preparation and Spectroscopic Investigation of CdS/CdSe/CdS Quantum-Dot Quantum-Well Heterostructures

Buy Article:

$113.00 plus tax (Refund Policy)


CdS/CdSe/CdS quantum-dot quantum-well heterostructures with the different thicknesses of CdSe well layers were synthesized by using the colloidal chemical method. The absorption, photoluminescence and Raman scattering spectra of CdS cores, and CdS/CdSe, CdS/CdSe/CdS structures were investigated. A comparative study of their optical properties confirmed the formation of CdSe well and exterior CdS shell. Raman spectra of the nanostructures exhibit the quantum confinement of the optical phonons and the appearance of the surface phonons. It was found that the temperature dependence of the photoluminescence emission energy is described by Varshni relation with the different temperature coefficients for CdS/CdSe and CdS/CdSe/CdS structures. Upconversion luminescence was observed at low temperatures. The optical and vibrational properties of quantum-dot quantum-well heterostructures have been discussed.


Document Type: Research Article


Publication date: 2009-02-01

More about this publication?
  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more