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Solvent Engineering for Preparation of Perovskite Film based on Lead Iodide for Solar Cells Applications

Timasi, Nazanin | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50521 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Seyed Reyhani, Morteza; Mohammadi, Mohammad Reza; Riahi Noori, Nastaran
  7. Abstract:
  8. The microstructure, morphology and quality of the perovskite organic-inorganic layer as an absorber layer in perovskite solar cells has a significant role on the efficiency and energy conversion of the device. Different solvent engineering methods have been employed to prepare the perovskite layer with the desired properties and thier reproducibility have been studied. Herein, we applied a two-step solution approach by solvent engineering method, using solvents such as isopropyl alcohol, acetone and thier mixture, for preparation of lead iodide films. Moreover, their metallurgical and photovoltaic properties were investigated. The impact of solvent engineering, using solvents such as triethylentetramine and mixtures of dichloromethane and diethyl ether, on morphology of prepared perovskite films and photovoltaic properties of their corresponding devices were studied. In order to improve the conversion efficiency of the cells, the vapor assisted solution process combined with solvent engineering was also used to prepare the perovskite film. Amongst the fabrication methods, MAPbI3 films prepared by vapor assisted solution process showed good morphology and microstructure for solar cell applications. The highest efficiency of 7.71% was obtained by this method using triethylentetramine solvent
  9. Keywords:
  10. Solar Cells ; Perovskite ; Nanostructure ; Perovskite ; Lead Iodied ; Solvent Engineering

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