Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer
The absorption spectra of N719 sensitizer anchored on the films prepared by TiO2 nanocrystals with different morphology and size were investigated for improving the performance of dye-sensitized solar cell (DSC). We find that the morphology and size of TiO2 nanocrystals can affect the UV-vis and FT-...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/906198 |
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| author | Puhong Wen Yinfeng Han Weixing Zhao |
| author_facet | Puhong Wen Yinfeng Han Weixing Zhao |
| author_sort | Puhong Wen |
| collection | DOAJ |
| description | The absorption spectra of N719 sensitizer anchored on the films prepared by TiO2 nanocrystals with different morphology and size were investigated for improving the performance of dye-sensitized solar cell (DSC). We find that the morphology and size of TiO2 nanocrystals can affect the UV-vis and FT-IR spectra of the sensitizer anchored on their surfaces. In particular, the low-energy metal-to-ligand charge-transfer transitions (MLCT) band in the visible absorption spectra of N719 is strongly affected, and locations of these MLCT bands revealed larger differences. The results indicate that there is a red shift of MLCT band in the spectra obtained by using TiO2 nanocrystals with long morphology and large size compared to that in solution. And it produced a larger red-shift on the MLCT band after TiO2 nanocrystals with small size mixed with some long nanocrystals. Accordingly, the utilization rate to visible light is increased. This is a reason why the DSC prepared by using such film as a photoelectrode has better performance than before mixing. |
| format | Article |
| id | doaj-art-198a0d6273c348c096dabc142ce18f25 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-198a0d6273c348c096dabc142ce18f252025-02-03T01:29:51ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/906198906198Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 SensitizerPuhong Wen0Yinfeng Han1Weixing Zhao2Department of Chemistry and Chemical Engineering, Baoji University of Arts and Science, 1 Gaoxin Road, Shaanxi, Baoji 721013, ChinaDepartment of Chemistry and Chemical Engineering, Baoji University of Arts and Science, 1 Gaoxin Road, Shaanxi, Baoji 721013, ChinaDepartment of Chemistry and Chemical Engineering, Baoji University of Arts and Science, 1 Gaoxin Road, Shaanxi, Baoji 721013, ChinaThe absorption spectra of N719 sensitizer anchored on the films prepared by TiO2 nanocrystals with different morphology and size were investigated for improving the performance of dye-sensitized solar cell (DSC). We find that the morphology and size of TiO2 nanocrystals can affect the UV-vis and FT-IR spectra of the sensitizer anchored on their surfaces. In particular, the low-energy metal-to-ligand charge-transfer transitions (MLCT) band in the visible absorption spectra of N719 is strongly affected, and locations of these MLCT bands revealed larger differences. The results indicate that there is a red shift of MLCT band in the spectra obtained by using TiO2 nanocrystals with long morphology and large size compared to that in solution. And it produced a larger red-shift on the MLCT band after TiO2 nanocrystals with small size mixed with some long nanocrystals. Accordingly, the utilization rate to visible light is increased. This is a reason why the DSC prepared by using such film as a photoelectrode has better performance than before mixing.http://dx.doi.org/10.1155/2012/906198 |
| spellingShingle | Puhong Wen Yinfeng Han Weixing Zhao Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer International Journal of Photoenergy |
| title | Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer |
| title_full | Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer |
| title_fullStr | Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer |
| title_full_unstemmed | Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer |
| title_short | Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer |
| title_sort | influence of tio2 nanocrystals fabricating dye sensitized solar cell on the absorption spectra of n719 sensitizer |
| url | http://dx.doi.org/10.1155/2012/906198 |
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