Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells
The microstructures of photo- and counter-electrodes play critical roles in the performance of dye-sensitized solar cells (DSSCs). In particular, various interfaces, such as fluorinated-tin oxide (FTO)/TiO2, TiO2/TiO2, and TiO2/electrolyte, in DSSCs significantly affect the final power conversion ef...
| Main Authors: | , , , , |
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| Andre forfattere: | |
| Format: | Journal Article |
| Sprog: | English |
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2013
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| Online adgang: | https://hdl.handle.net/10356/97032 http://hdl.handle.net/10220/10422 |
| _version_ | 1826126393637863424 |
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| author | Chen, Tao Hu, Weihua Song, Junling Guai, Guan Hong Li, Chang Ming |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Chen, Tao Hu, Weihua Song, Junling Guai, Guan Hong Li, Chang Ming |
| author_sort | Chen, Tao |
| collection | NTU |
| description | The microstructures of photo- and counter-electrodes play critical roles in the performance of dye-sensitized solar cells (DSSCs). In particular, various interfaces, such as fluorinated-tin oxide (FTO)/TiO2, TiO2/TiO2, and TiO2/electrolyte, in DSSCs significantly affect the final power conversion efficiency (PCE). However, research has generally focused more on the design of various nanostructured semiconducting materials with emphasis on optimizing chemical or/and physical properties, and less on these interface functionalizations for performance improvement. This work explores a new application of graphene to modify the interface of FTO/TiO2 to suppress charge recombination. In combination with interfaces functionalization of TiO2/TiO2 for low charge-transport resistance and high charge-transfer rate, the final PCE of DSSC is remarkably improved from 5.80% to 8.13%, achieving the highest efficiency in comparison to reported graphene/TiO2-based DSSCs. The method of using graphene to functionalize the surface of FTO substrate provides a better alternative method to the conventional pre-treatment through hydrolyzing TiCl4 and an approach to reduce the adverse effect of microstructural defect of conducting glass substrate for electronic devices. |
| first_indexed | 2024-10-01T06:51:38Z |
| format | Journal Article |
| id | ntu-10356/97032 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:51:38Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/970322020-03-07T11:35:35Z Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells Chen, Tao Hu, Weihua Song, Junling Guai, Guan Hong Li, Chang Ming School of Chemical and Biomedical Engineering Centre for Advanced Bionanosystems The microstructures of photo- and counter-electrodes play critical roles in the performance of dye-sensitized solar cells (DSSCs). In particular, various interfaces, such as fluorinated-tin oxide (FTO)/TiO2, TiO2/TiO2, and TiO2/electrolyte, in DSSCs significantly affect the final power conversion efficiency (PCE). However, research has generally focused more on the design of various nanostructured semiconducting materials with emphasis on optimizing chemical or/and physical properties, and less on these interface functionalizations for performance improvement. This work explores a new application of graphene to modify the interface of FTO/TiO2 to suppress charge recombination. In combination with interfaces functionalization of TiO2/TiO2 for low charge-transport resistance and high charge-transfer rate, the final PCE of DSSC is remarkably improved from 5.80% to 8.13%, achieving the highest efficiency in comparison to reported graphene/TiO2-based DSSCs. The method of using graphene to functionalize the surface of FTO substrate provides a better alternative method to the conventional pre-treatment through hydrolyzing TiCl4 and an approach to reduce the adverse effect of microstructural defect of conducting glass substrate for electronic devices. 2013-06-17T03:26:06Z 2019-12-06T19:38:05Z 2013-06-17T03:26:06Z 2019-12-06T19:38:05Z 2012 2012 Journal Article Chen, T., Hu, W., Song, J., Guai, G. H., & Li, C. M. (2012). Interface Functionalization of Photoelectrodes with Graphene for High Performance Dye-Sensitized Solar Cells. Advanced Functional Materials, 22(24), 5245-5250. 1616-3028 https://hdl.handle.net/10356/97032 http://hdl.handle.net/10220/10422 10.1002/adfm.201201126 en Advanced functional materials © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | Chen, Tao Hu, Weihua Song, Junling Guai, Guan Hong Li, Chang Ming Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
| title | Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
| title_full | Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
| title_fullStr | Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
| title_full_unstemmed | Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
| title_short | Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
| title_sort | interface functionalization of photoelectrodes with graphene for high performance dye sensitized solar cells |
| url | https://hdl.handle.net/10356/97032 http://hdl.handle.net/10220/10422 |
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