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Development of a new solid-state absorber material for dye-sensitized solar cell (DSSC)

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Bulletin of Materials Science

Source : Bulletin of Materials Science, Springer, Volume 37, Number 3, p.685–693 (2014)

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Campus : Kochi

School : Center for Nanosciences

Center : Nanosciences

Department : Radiodiagnosis

Year : 2014

Abstract : In contrast to the conventional DSSC systems, where the dye molecules are used as light harvesting material, here a solid-state absorber was used as a sensitizer in conjunction with the dye. The materials like ZnO and Al2O3 : C, which will show optically stimulated luminescence (OSL) upon irradiation were used as extremely thin absorber layers. This novel architecture allows broader spectral absorption, an increase in photocurrent, and hence, an improved efficiency because of the mobility of the trapped electrons in the absorber material after irradiation, to the TiO2 conduction band. Nanocrystalline mesoporous TiO2 photoanodes were fabricated using these solid-state absorber materials and after irradiation, a few number of samples were co-sensitized with N719 dye. On comparing both the dye loaded photoanodes (ZnO/TiO2 and Al2O3 : C/TiO2), it can be concluded from the present studies that, the Al2O3 : C is superior to ZnO under photon irradiation. Al2O3 : C is more sensitive to photon irradiation than ZnO and hence there can be more trap centres produced in Al2O3 : C.

Cite this Research Publication : S. Lilly Cyriac, Deepika, B., Pillai, B., Nair, S. V., and Subramanian, K. R. V., “Development of a new solid-state absorber material for dye-sensitized solar cell (DSSC)”, Bulletin of Materials Science, vol. 37, pp. 685–693, 2014.

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