Loading...

Synthesis and Characterization of Nanostructured Cadmium Tellurides for Solar Cell Application

Ranjbarzadeh, Shahin | 2004

864 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41232 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Mohammadi, Mohammad Reza
  7. Abstract:
  8. Recently, synthesis of nanostructured CdTe of II-VI semiconductors has caused much attention due to their great potential in many optoelectronic applications such as solar cells and detectors. Among different synthesis methods, solvothermal process is a suitable method due to low temperature synthesis. In this work CdTe nanoparticles, nanowires, nanorods and nanobelts with cubic structure (zincblende) were synthesized via a simple solvothermal method at a moderate temprature. The effect of processing parameters on some properties sush as crystal structure, morphology, crystallite size chemical bond configuration and optical properties of synthesized CdTe were investigated. It was found that, in presence of ethylenediamine CdTe nanoparticles with diameter of 25 nm at 160oc for 12h. With increasing process time up to 60 h, CdTe nanowires with a mean diameter of 70 nm and length greater than 30 micrometers were produced. CdTe nanorods with diameter of 80 nm and length smaller than 700 nm were obtained in presence of triethylene tetraamine. In presence of ethanolamine CdTe nanobelts with 70 nm wide and length of few micrometers were observed. The results showed that solvent plays a key role in solvothermal process. The blue shift in the absorption peak (420nm) of CdTe nanoparticles was observed and the energy gap is found to be 2.954 eV
  9. Keywords:
  10. Cadmium Telluride ; Solvothermal Method ; Nanostructure ; Solar Cells

 Digital Object List

 Bookmark