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Issue 88, 2014
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Tandem dye-sensitized solar cells with a back-contact bottom electrode without a transparent conductive oxide layer

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Abstract

We report on the architecture of tandem dye-sensitized solar cells (DSSCs) with a back-contact bottom electrode without a transparent conductive oxide layer (TCO-less tandem DSSCs). The bottom electrode consists of glass/stained porous TiO2/back-contact porous metal. As the structure has fewer TCO layers than simple mechanical stack tandem DSSCs, more light reaches the bottom electrode. Two model dyes (D131 and N719) were used to confirm the tandem performance of the cells. The open-circuit voltage (Voc) was the sum of the Voc of the top cell and the Voc of the TCO-less bottom cell, showing that the cell worked as a tandem cell. The power conversion efficiency of the TCO-less tandem DSSC (7.10%) was greater than that of the stack tandem DSSCs (6.28%).

Graphical abstract: Tandem dye-sensitized solar cells with a back-contact bottom electrode without a transparent conductive oxide layer

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Publication details

The article was received on 24 Jul 2014, accepted on 11 Sep 2014 and first published on 11 Sep 2014


Article type: Paper
DOI: 10.1039/C4RA07539K
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Citation: RSC Adv., 2014,4, 47735-47742

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    Tandem dye-sensitized solar cells with a back-contact bottom electrode without a transparent conductive oxide layer

    A. K. Baranwal, T. Shiki, Y. Ogomi, S. S. Pandey, T. Ma and S. Hayase, RSC Adv., 2014, 4, 47735
    DOI: 10.1039/C4RA07539K

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