A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells
Ruthenium-based C106 and organic D131 sensitizers have been judicially chosen for co-sensitization due to their complementary absorption properties and different molecular sizes. Co-sensitization yields a higher light-harvesting efficiency as well as better dye coverage to passivate the surface of T...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/101063 http://hdl.handle.net/10220/11061 |
| _version_ | 1826127097386500096 |
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| author | Nguyen, Loc H. Mulmudi, Hemant K. Sabba, Dharani Kulkarni, Sneha A. Batabyal, Sudip Kumar Nonomura, Kazuteru Grätzel, Michael Mhaisalkar, Subodh Gautam |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Nguyen, Loc H. Mulmudi, Hemant K. Sabba, Dharani Kulkarni, Sneha A. Batabyal, Sudip Kumar Nonomura, Kazuteru Grätzel, Michael Mhaisalkar, Subodh Gautam |
| author_sort | Nguyen, Loc H. |
| collection | NTU |
| description | Ruthenium-based C106 and organic D131 sensitizers have been judicially chosen for co-sensitization due to their complementary absorption properties and different molecular sizes. Co-sensitization yields a higher light-harvesting efficiency as well as better dye coverage to passivate the surface of TiO2. The co-sensitized devices C106 + D131 showed significant enhancement in the performance (η = 11.1%), which is a marked improvement over baseline devices sensitized with either D131 (η = 5.6%) or C106 (η = 9.5%). The improved performance of the co-sensitized cell is attributed to the combined enhancement in the short circuit current, open circuit voltage, and the fill-factor of the solar cells. Jsc is improved because of the complementary absorption spectra and favorable energy level alignments of both dyes; whereas, Voc is improved because of the better surface coverage helping to reduce the recombination and increase the electron life time. The origins of these enhancements have been systematically studied through dye desorption, absorption spectroscopy, and intensity modulated photovoltage spectroscopy investigations. |
| first_indexed | 2024-10-01T07:03:10Z |
| format | Journal Article |
| id | ntu-10356/101063 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:03:10Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1010632021-01-14T08:14:33Z A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells Nguyen, Loc H. Mulmudi, Hemant K. Sabba, Dharani Kulkarni, Sneha A. Batabyal, Sudip Kumar Nonomura, Kazuteru Grätzel, Michael Mhaisalkar, Subodh Gautam School of Materials Science and Engineering Energy Research Institute @ NTU (ERI@N) Ruthenium-based C106 and organic D131 sensitizers have been judicially chosen for co-sensitization due to their complementary absorption properties and different molecular sizes. Co-sensitization yields a higher light-harvesting efficiency as well as better dye coverage to passivate the surface of TiO2. The co-sensitized devices C106 + D131 showed significant enhancement in the performance (η = 11.1%), which is a marked improvement over baseline devices sensitized with either D131 (η = 5.6%) or C106 (η = 9.5%). The improved performance of the co-sensitized cell is attributed to the combined enhancement in the short circuit current, open circuit voltage, and the fill-factor of the solar cells. Jsc is improved because of the complementary absorption spectra and favorable energy level alignments of both dyes; whereas, Voc is improved because of the better surface coverage helping to reduce the recombination and increase the electron life time. The origins of these enhancements have been systematically studied through dye desorption, absorption spectroscopy, and intensity modulated photovoltage spectroscopy investigations. 2013-07-09T06:00:14Z 2019-12-06T20:32:55Z 2013-07-09T06:00:14Z 2019-12-06T20:32:55Z 2012 2012 Journal Article Nguyen, L. H., Mulmudi, H. K., Sabba, D., Kulkarni, S. A., Batabyal, S. K., Nonomura, K., et al. (2012). A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells. Physical Chemistry Chemical Physics, 14(47), 16182-16186. https://hdl.handle.net/10356/101063 http://hdl.handle.net/10220/11061 10.1039/C2CP42959D en Physical chemistry chemical physics © The Owner Societies. |
| spellingShingle | Nguyen, Loc H. Mulmudi, Hemant K. Sabba, Dharani Kulkarni, Sneha A. Batabyal, Sudip Kumar Nonomura, Kazuteru Grätzel, Michael Mhaisalkar, Subodh Gautam A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells |
| title | A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells |
| title_full | A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells |
| title_fullStr | A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells |
| title_full_unstemmed | A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells |
| title_short | A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells |
| title_sort | selective co sensitization approach to increase photon conversion efficiency and electron lifetime in dye sensitized solar cells |
| url | https://hdl.handle.net/10356/101063 http://hdl.handle.net/10220/11061 |
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