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Formulation and Prodution of Organometal-halide Provskite Cells to Increase Solar Cells Efficieny

Attari Navab, Arvin | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50889 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Nemati, Ali
  7. Abstract:
  8. Today organometallic perovskites are very important in fabrication of solar cells. This materials have advantages like high mobility of charge carriers, changing in range of light aborption with changing in structures atoms, having longer charge carrier diffusion lengths than other materials, high stability and efficiency, Low-cost fabrication process, having capability of studying and processing in low temperatures and having flexibility because of Weak chemical bond in perovskite structure. Due to the low stability and rapid decomposition of this material with the presence of light and moisture, in this study has tried to use PbS quantum dots which is used in sensitive dye solar cells as adsorbance material in order to improve the stability and performance of CH3NH3PbI3. Also due to the existence of preferred pathways for electrons moving and the reduction of electron and hole recombination in TiO2 nanorods, the synthesis and and optical properties of TiO2 nanorods was evaluated and studied. Finally, it was found that in absorber samples of perovskite-quantum dots, the absorption rate is about 3 times higher than that of quantum-dot alone. Similarly, in perovskite-quantum absorber the absorption edge increased by about 900 nm due to the presence of quantum dots
  9. Keywords:
  10. Solar Cells ; Synthesis ; Zinc Sulfide ; Titanium Dioxide ; Quantum Dot ; Perovskite ; Nanorod

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