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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/037/03/0685-0693

    • Keywords

       

      Optically stimulated luminescence; DSSC; zinc oxide; carbon-doped aluminium oxide.

    • 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.

    • Author Affiliations

       

      Swapna Lilly Cyriac1 B Deepika1 Bhaskaran Pillai2 S V Nair1 K R V Subramanian1

      1. Amrita Centre for Nanosciences and Molecular Medicine, Ponekkara P.O., Kochi 682 041, India
      2. Department of Radiation Oncology, AIMS, Kochi 682 041, India
    • Dates

       
  • Bulletin of Materials Science | News

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