Low temperature synthesis of thiol-functionalized CdTe nanoclusters with different tellurium contents

R. Sathyamoorthy, P. Sudhagar, R. Saravana Kumar, T. M. Sathyadevan

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

In recent years thiol-functionalized cadmium telluride nanoparticles act as a core layers for obtaining high photovoltaic efficiency in conjugated polymer/inorganic nanocrystal solar cells and also provide easy tuning of quantum size effect by varying thiol groups and processing temperature. In this work, thiol functionalized CdTe nanoclusters were prepared for different tellurium concentrations at low temperature and its impact has been discussed. Structural parameters estimated by X-ray diffraction revealed hexagonal phases at lower tellurium concentration and cubic phase at higher tellurium concentrations. Surface morphology of the samples analyzed by transmission electron microscopy, exhibited cluster type of morphology. Optical band gap energy estimated by diffused electron microscopy showed an increase with Te content and band edge emission has been observed in the photoluminescence spectra of CdTe nanoclusters around 620 nm.

Original languageEnglish
Pages (from-to)99-103
Number of pages5
JournalCrystal Research and Technology
Volume45
Issue number1
DOIs
Publication statusPublished - Jan 2010

Keywords

  • Cadmium telluride
  • Diffused reflectance spectra
  • Mott-wannier exciton
  • Nanoclusters
  • Quantum confinement
  • Stabilizing ligands

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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