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Enhancement of p-type dye-sensitized solar cell performance by supramolecular assembly of electron donor and acceptor

By H. Tian, J. Oscarsson, E. Gabrielsson, S.K. Eriksson, R. Lindblad, B. Xu, Y. Hao, G. Boschloo, E.M.J. Johansson, J.M. Gardner, A. Hagfeldt, H. Rensmo and L. Sun


Supramolecular interactions based on porphyrin and fullerene derivatives were successfully adopted to improve the photovoltaic performance of p-type dye-sensitized solar cells (DSCs). Photoelectron spectroscopy (PES) measurements suggest a change in binding configuration of ZnTCPP after co-sensitization with C60PPy, which could be ascribed to supramolecular interaction between ZnTCPP and C60PPy. The performance of the ZnTCPP/C60PPy-based p-type DSC has been increased by a factor of 4 in comparison with the DSC with the ZnTCPP alone. At 560 nm, the IPCE value of DSCs based on ZnTCPP/C60PPy was a factor of 10 greater than that generated by ZnTCPP-based DSCs. The influence of different electrolytes on charge extraction and electron lifetime was investigated and showed that the enhanced V oc from the Co 2+/3+ (dtbp) 3 -based device is due to the positive E F shift of NiO

Publisher: 'Springer Science and Business Media LLC'
Year: 2015
DOI identifier: 10.1038/srep04282
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