Abstract
A particulate counter electrode with photo scattering and redox catalytic properties is applied to dye sensitized solar cells (DSSCs) in order to improve photo conversion efficiency and simplify the assembly process. Our particulate counter electrode acts as both a photo reflecting layer and a catalyst for reduction of electrolyte. The reflective and catalytic properties of the electrode are investigated through optical and electrochemical analysis, respectively. A short circuit current density enhancement is observed in the DSSCs without the need to add an additional reflecting layer to the electrode. This leads to a simplified assembly process.
Highlights
Dye sensitized solar cells (DSSCs) were first developed by Grätzel in 1991 [1] and are a promising system for generation solar cells
In order to overcome these stagnation of DSSCs performance and relatively lower property than inorganic based solar cells, many research groups have attempted to increase DSSC device performance through enhancement of the short-circuit current density (Jsc), open-circuit voltage (Voc), and fill factor (FF) [7,8,9,10]
These results show that replacing the counter electrode with the particulate counter electrode leads to an enhancement of the light harvesting properties and we can control the reflectance of counter electrode by controlling the H2PtCl6 solution concentration in TiO2 particle paste
Summary
Dye sensitized solar cells (DSSCs) were first developed by Grätzel in 1991 [1] and are a promising system for generation solar cells. The photo conversion efficiency of DSSCs is still well below that of traditional inorganic-based solar cells formed of chalcogenide compounds or amorphous silicon [4,5]. In order to overcome these stagnation of DSSCs performance and relatively lower property than inorganic based solar cells, many research groups have attempted to increase DSSC device performance through enhancement of the short-circuit current density (Jsc), open-circuit voltage (Voc), and fill factor (FF) [7,8,9,10]. The light harvesting ability of the DSSCs can be improved by increasing the intensity of incident light. This can be done through the addition of a reflecting or scattering layer, such as a photonic crystal layer [15,16].
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