Loading...

Investigation of Electron Transport and Scattering Effect of Dye Sensitized Solar Cells by the Using Titania Nano Particles and Perovskite Structures ( ATiO3)

Ayneband, Samaneh | 2016

582 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48863 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Mohammadi, Mohammad Reza
  7. Abstract:
  8. Morphology, microstructure, phase composition and arrangement modes of the photoanode electrode are the most important parameters which affect the photovoltaic properties of dye-sentisized solar cells (DSSCs). In most DSSCs the scattering layer has been used to improve their efficiency. In addition, there are different techniques to improve the electron transport using different morphologies of titania such as one-dimensional nanostructures. In this research, the effect of peroskite structures on electron transport and scattering effect is investigated. Using sol-gel process, the compositions will be produced which have special morphology and appropriate band gap in spite of pure titania. The photoanode of the DSSCs has monolayer and bilayer configurations which the monolayers are the mixture of perovskite structures and nano titania, and the bilayers are consist of active and scattering layers. The composition of active layer is pure titania in form of anatase and the composition of scattering layer is the mixture of ATiO3structures and pure titania. At the end, after fabrication different photoelectrodes, the metallurgical, optical and photovoltaic properties will be investigated by the use of different analysis like SEM, XRD, EIS and UV-vis. Based on the results, Cobalt titanate cells have better scattering effect and dye loading. The J-V test showed that in a fixed thickness, 20% cobalt titanate can improve the efficiency from 4.13 to 5.37 and by altering the thickness this efficiency reached to 7.46 percent. Besides, between two- layer cells, 15 % Cobalt titanate in scattering layer can increase the efficiency up to 7.67 percent
  9. Keywords:
  10. Morphology ; Scattering Layer ; Dye Sensitized Solar Cells ; Electron Transition ; Perovskite ; Titania Nanoparticles

 Digital Object List

 Bookmark

No TOC