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Characterization of tmed-copper (I) iodide (Cul) thin film and performance for solid state dye sensitized solar cell applications

Ayib Rosdi, Zainun (2012) Characterization of tmed-copper (I) iodide (Cul) thin film and performance for solid state dye sensitized solar cell applications. PhD thesis, Universiti Teknologi Mara.

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Abstract

This thesis investigates the use of eco-friendly copper (I) iodide or cuprous iodide (Cul), a p-type semiconductor material, with the incorporation of a chelating agent or organic ligand, called tetramethylethylenediamine (TMED@TMEDA) in the preparation for solid-state dye-sensitized solar cells (DSSC). The Cul solution incorporated with the ligand was dispersed in acetonitrile solvent and deposited on glass and indium-doped tin oxide (ITO) substrates. The thin film is characterized to study its suitability for applications in dye sensitized solar cell (DSSC), a low cost solar cell but having high energy conversion efficiency. From the characterization, compared to that of pure Cul film, its optical properties show improved band-gap energy, while its electrical properties show improved conductivity. An efficient solid-state dye-sensitized solar cell (n-Ti0 2 /dyelp-CuI) with improved stability was fabricated. The TMED-capped Cul crystals not only controls pore-filling of the dyed Ti0 2 layer but also improves the electrical contacts between the Ti0 2 particles, which in general improves the efficiency of the DSSCs. Current-voltage characteristics of the cell showed a larger energy conversion, achieving higher energy conversion efficiency and improved stability.

Item Type: Thesis (PhD)
Additional Information: Thesis (Doctor of Philosophy in Engineering) -- Faculty of Electrical Engineering, Universiti Teknologi Mara - 2012
Uncontrolled Keywords: Solar cells; Copper indium selenide
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Unspecified
Depositing User: Nik Ahmad Nasyrun Nik Abd Malik
Date Deposited: 11 Nov 2015 03:05
Last Modified: 15 Jan 2018 07:44
URI: http://umpir.ump.edu.my/id/eprint/9010
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