Metal-based bracken-like single-sided dye-sensitized solar cells with horizontal separation

Physical Chemistry Chemical Physics : PCCP
F BehrouznejadFariba Tajabadi

Abstract

One of the drawbacks of typical dye-sensitized solar cells (DSCs) is their high cost and the high electrical resistance of the transparent conducting substrate. In conventional sandwich-type DSCs, only one of the FTO substrates can be replaced by a metal substrate. We investigated an all-metal-electrode single-sided DSC in which interpenetrated bracken-like Cr electrodes were created using photolithography; mesoporous TiO2 and Pt films were deposited on the laterally separated electrodes. Thermal Pt deposition and electrodeposition methods were investigated and it was found that a cyclic electrodeposition method resulted in selective Pt deposition at room temperature with a higher device performance. Cu or ZnO sacrificial layers and TiO2 or TiO2/SiO2 porous layers were used for the spacer layer that keeps the Pt electrode away from the TiO2 mesoporous layer and the optimum results were obtained when a TiO2/SiO2 layer was used. The best device had a current density of 8.47 mA cm(-2), an open circuit voltage of 0.685 V and an efficiency of 2.44%. The results of open circuit voltage decay and electrochemical impedance spectrometry showed the formation of a high-resistivity blocking layer, which was attributed to the Cr oxide forme...Continue Reading

References

May 17, 2005·Nature Materials·Matt LawPeidong Yang
Jul 27, 2006·The Journal of Physical Chemistry. B·Petra J CameronSarmimala Hore
Jun 11, 2010·Advanced Materials·Dongchuan FuUdo Bach
Sep 14, 2010·Chemical Reviews·Anders HagfeldtHenrik Pettersson
Feb 26, 2013·ACS Applied Materials & Interfaces·Jeong KwonJong Hyeok Park

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Citations

Jun 21, 2017·ACS Applied Materials & Interfaces·Fatemeh BehrouznejadNima Taghavinia

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