Jump to main content
Jump to site search


High Efficiency Solid-State Dye-Sensitized Solar Cells using Cobalt(II/III) Redox Mediator

Abstract

Improvement on mass transport of the considerably large sized cobalt (II/III) complexes, particularly in high viscosity electrolyte, is crucial for solid-state dye-sensitized solar cells (SS-DSCs) to reach a reliable high efficiency toward practical applications. In this work, titania nanorod aggregates (TNA) with a great specific surface area and well-developed crystalline network were utilized as photoanode building blocks for application in cobalt (II/III) tris(2′2-bipyridine) complexes based solid-state electrolyte. An initial efficiency excess 7.1% and a long term stable efficiency of approximately 8.0% were achieved at full sun illumination by freshly assembled and aged TNA SS-DSCs, respectively. This represents dramatic enhancements of nearly 35% and 100% against the SS-DSCs prepared from two standard TiO2 nanoparticle samples – CCIC (approx. 5.9%) and Degussa P25 (approx. 4.0%), correspondingly. The TNA is characterised by a combination of mesopores within each aggregate and macro inter-aggregates voids, a high specific surface area and a great light scattering ability; such features make the aggregates superior photoanode building blocks for the application in bulky cobalt redox mediator based SS-DSCs system.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 08 Mar 2017, accepted on 18 Apr 2017 and first published on 19 Apr 2017


Article type: Paper
DOI: 10.1039/C7TC00994A
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
  •   Request permissions

    High Efficiency Solid-State Dye-Sensitized Solar Cells using Cobalt(II/III) Redox Mediator

    X. L. Zhang, W. Huang, A. Gu, W. Xiang, F. Huang, Z. X. Guo, Y. Cheng and L. Spiccia, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC00994A

Search articles by author