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Fabrication of Dye-Sensitized Solar Cell Modules by Screen-Printing
Chalangar, Ebrahim | 2013
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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 46928 (04)
- University: Sharif University of Technology
- Department: Physics
- Advisor(s): Taghavinia, Nima
- Abstract:
- Dye-sensitized solar cells (DSSCs) are emerging as low-cost alternatives to conventional, solid-state, silicon solar cells. A porous network of a nanosize semiconductor material with a wide band-gaps usually TiO2, serves as charge transport medium. A monolayer of dye is chemically adsorbed on this material. Photoexcitation of dye causes injection of electrons into the conduction band of TiO2 from where they diffuse towards a transparent conducting oxide (TCO) substrate. The dye is regenerated through receiving electrons from a redox couple dissolved in the electrolyte. After passing through a desired load, the electrons enter the cell through a counter electrode to reduce the redox ions and thus complete the circuit. The manufacturing, reliability, performance, and stability of a DSC module are more complex compared with the test cell situation due to the larger size. In a parallel connection, conductive fingers are incorporated in a large cell to collect the current. The conductive fingers have to be protected against the redox electrolyte by glass frits or have to use a metal that has resistance against corrosion. The interface of electrolyte and metal busbar and effect of this on cell characteristics, has studied with more details
- Keywords:
- Solidstate Dye Sensitized Solar Cell ; Electroless Nickel ; Modules ; Screen Printed Electrode ; Busbar
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