Back illuminated flexible dye sensitized solar cell using titanium foil and platinum coated indium tin oxide polyethylene terephthalat

Flexible Dye Sensitized Solar Cell (FDSSC) have attracted great attention due to its ability to install at curved and uneven surface. Therefore, several flexible substrates including plastic and metal substrate have been chosen to replace rigid glass substrate for DSSC application. However, due to the weak thermal stability of plastic Indium Tin Oxide Polyethylene Terephthalate (ITO-PET) substrate that limit the sintering process at 150℃, metal titanium (Ti) substrate was chosen as photoanode substrate due to its high thermal stability as well as good electrical conductivity. The main challenge for metal substrate is the opaqueness of metal substrate that need to be operated under back illumination method which will reduce the light penetration thus lead to the low power conversion efficiency. Consequently, the Platinum (Pt) layer on the ITO-PET for the counter electrode (CE) side need to be properly choose to allow sufficient light penetration under back illumination method. In this study, several experiments have been conducted to improve the efficiency of DSSC until the fabrication of flexible DSSC (FDSSC). During the fabrication of FDSSC, the titanium dioxide (TiO2) was deposited onto Ti foil using Doctor-Blade method while platinum (Pt) was deposited using sputtering method onto ITO-PET. The highest efficiency of FDSSC with 2.03% has been achieved by applying and pretreatment of hydrogen peroxide (H2O2) Ti foil as photoanode substrate and 7 nm thickness of Platinum (Pt) layer on ITO-PET as CE substrate under back illumination method.

Text 118453.pdf Download (1MB) Official URL or Download Paper: http://ethesis.upm.edu.my/id/eprint/18380

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