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Proceedings Paper

Monolithic all-solid-state dye-sensitized solar cells
Author(s): Yaoguang Rong; Zhiliang Ku; Mi Xu; Guanghui Liu; Heng Wang; Hongwei Han
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Paper Abstract

The high cost of electricity produced by solar cells compared with electricity from other energy sources inhibits a more widespread adoption of solar energy. Here, a low-cost monolithic all-solid-state dye-sensitized solar cell (DSSC) was developed with a mesoscopic carbon counter electrode (CE). Based on the design of a triple layer structure, the TiO2 working electrode layer, ZrO2 spacer layer and carbon counter electrode (CE) layer are constructed on a single conducting glass substrate by screen-printing. With a vacuum pore-filling technique, solid-state materials such as PEO/PVDF polymer composite, poly(3-hexylthiophene) (P3HT) and 2,2’,7,7’-tetrakis(N,N-di-p-methoxyphenylamine)- 9,9’-spirobifluorene (spiro-OMeTAD) hole transport material (HTM) could effectively infiltrate the multilayer thick films to assemble all-solid-state devices. The high surface area and large pore volume favor the penetration of the solidstate electrolyte materials and could reduce the resistance of the interface between CE and solid-state electrolyte. Correspondingly, efficiency up to 3.23% was obtained with polymer composite electrolyte and the dye of N719. With the dye of D102, efficiencies of 3.11% and 3.45% were obtained for the HTMs of P3HT and spiro-OMeTAD based electrolytes. In addition, a mesoscopic methylammonium lead iodide (CH3NH3PbI3) perovskite/TiO2 heterojunction solar cell was developed based on the monolithic structure and showed an efficiency of up to 6.53%. This design for monolithic DSSC with a carbon CE presents a promising commercial application prospect for this photovoltaic technology.

Paper Details

Date Published: 17 October 2013
PDF: 9 pages
Proc. SPIE 8830, Organic Photovoltaics XIV, 88301W (17 October 2013); doi: 10.1117/12.2023774
Show Author Affiliations
Yaoguang Rong, Huazhong Univ. of Science and Technology (China)
Zhiliang Ku, Huazhong Univ. of Science and Technology (China)
Mi Xu, Huazhong Univ. of Science and Technology (China)
Guanghui Liu, Huazhong Univ. of Science and Technology (China)
Heng Wang, Huazhong Univ. of Science and Technology (China)
Hongwei Han, Huazhong Univ. of Science and Technology (China)
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Published in SPIE Proceedings Vol. 8830:
Organic Photovoltaics XIV
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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