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

Bulletin of materials science

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

[1] Amrita Centre for Nanosciences and Molecular Medicine, Ponekkara P.O., Kochi 682 041, India$$Amrita Centre for Nanosciences and Molecular Medicine, Ponekkara P.O., Kochi 682 041, IndiaAmrita Centre for Nanosciences and Molecular Medicine, Ponekkara P.O., Kochi 682 041, India$$;Department of Radiation Oncology, AIMS, Kochi 682 041, India$$Department of Radiation Oncology, AIMS, Kochi 682 041, IndiaDepartment of Radiation Oncology, AIMS, Kochi 682 041, India$$

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

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown