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Title: Metal electroplating of three dimensional (3D) electrode in electrolyte-less dye sensitized solar cells (ELDSC)
Authors: Lim, Meng Keong
Jin, Ziyu
Gan, Chee Lip
Leong, Kam Chew
Wong, C. C.
Ong, Duen Yang
Keywords: DRNTU::Engineering::Materials::Compositional materials science
Issue Date: 2012
Source: Ong, D. Y., Lim, M. K., Jin, Z., Gan, C. L., Leong, K. C., & Wong, C. C. (2012). Metal Electroplating of Three Dimensional (3D) Electrode in Electrolyte-less Dye Sensitized Solar Cells (ELDSC). MRS Proceedings, 1390.
Series/Report no.: MRS proceedings
Abstract: The first Electrolyte-less dye sensitized solar cell (ELDSC) is proposed with the architecture of FTO-TiO2-dye-metal. In the ELDSC design, the most significant contact is the TiO2-dye-metal interface, whereby the metal electrode acts as the charge replenishment layer as well as the external electrode. In previous work, ELDSC has an inferior Fill Factor (FF) due to insufficient metal coverage from top-down physical vapor deposition. In this work, a three dimensional (3D) metal network plated through the mesoporous TiO2 network is achieved through bottom-up metal electroplating. This study focuses on the characteristics of electro deposition onto insulating planar TiO2 as well as mesoporous TiO2 network. For planar TiO2, gold (Au) islands form readily, becoming worm-like structures as they coalesce, subsequently becoming a continuous layer. (The plated metal on the insulating TiO2 layer is made possible by plane defects within the insulator layer that serve as the conductive supply path.) In contrast, electroplating carried out on a FTO-planar TiO2-mesoporous TiO2 substrate results in a 3D Au network within the mesoporous TiO2, where Au cords were observed as the connections among Au islands. This study demonstrates that a continuous metal layer can be electroplated onto an insulating TiO2 layer, borrowing its intrinsic planar defect network. Further, applying the same principle, a 3D metal network can be formed within mesoporous TiO2.
ISSN: 1946-4274
DOI: 10.1557/opl.2012.538
Rights: © 2012 Materials Research Society. This paper was published in MRS Proceedings and is made available as an electronic reprint (preprint) with permission of Materials Research Society. The paper can be found at the following official DOI: One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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