NANODEV Research Group


Dye Sensitized Solar Cell


 

Due to such features, such as their being more economically feasible, capability of working in low-light condition and applicability to flexible substrates, dye sensitized solar cells have begun to take conventional solar cell’s place. Typically dye sensitized solar cells include organometallic ruthenium based dye sensitizer which coats up TiO2 that has wide band gap and as a result of the excitation of the dye by the solar light, electrical current is obtained. In this system, TiO2 layer is a porous structure that has high surface area, which is made of nanoparticles and it is placed onto a conductive layer coated glass. It is also possible to use microporous materials such as zeolites as alternative materials for this semiconductive layer. When compared to conventional nanomaterials such as TiO2, dye incorporation occurs not only in the external surface area but also in the internal surface area of such porous materials like zeolites. It provides a great advantage since it enables increased absorption of dye molecules, which are also prevented from external conditions. Furthermore, it is observed that usage of hydrated zeolites elongate the recombination time due to the encapsulation of charged species and their restricted mobility.

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