Ag Nanoparticle–Functionalized Open-Ended Freestanding TiO2 Nanotube Arrays with a Scattering Layer for Improved Energy Conversion Efficiency in Dye-Sensitized Solar Cells
Dye-sensitized solar cells (DSSCs) were fabricated using open-ended freestanding TiO2 nanotube arrays functionalized with Ag nanoparticles (NPs) in the channel to create a plasmonic effect, and then coated with large TiO2 NPs to create a scattering effect in order to improve energy conversion effici...
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MDPI AG
2016-06-01
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| Series: | Nanomaterials |
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| Online Access: | http://www.mdpi.com/2079-4991/6/6/117 |
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| author | Won-Yeop Rho Myeung-Hwan Chun Ho-Sub Kim Hyung-Mo Kim Jung Sang Suh Bong-Hyun Jun |
| author_facet | Won-Yeop Rho Myeung-Hwan Chun Ho-Sub Kim Hyung-Mo Kim Jung Sang Suh Bong-Hyun Jun |
| author_sort | Won-Yeop Rho |
| collection | DOAJ |
| description | Dye-sensitized solar cells (DSSCs) were fabricated using open-ended freestanding TiO2 nanotube arrays functionalized with Ag nanoparticles (NPs) in the channel to create a plasmonic effect, and then coated with large TiO2 NPs to create a scattering effect in order to improve energy conversion efficiency. Compared to closed-ended freestanding TiO2 nanotube array–based DSSCs without Ag or large TiO2 NPs, the energy conversion efficiency of closed-ended DSSCs improved by 9.21% (actual efficiency, from 5.86% to 6.40%) with Ag NPs, 6.48% (actual efficiency, from 5.86% to 6.24%) with TiO2 NPs, and 14.50% (actual efficiency, from 5.86% to 6.71%) with both Ag NPs and TiO2 NPs. By introducing Ag NPs and/or large TiO2 NPs to open-ended freestanding TiO2 nanotube array–based DSSCs, the energy conversion efficiency was improved by 9.15% (actual efficiency, from 6.12% to 6.68%) with Ag NPs and 8.17% (actual efficiency, from 6.12% to 6.62%) with TiO2 NPs, and by 15.20% (actual efficiency, from 6.12% to 7.05%) with both Ag NPs and TiO2 NPs. Moreover, compared to closed-ended freestanding TiO2 nanotube arrays, the energy conversion efficiency of open-ended freestanding TiO2 nanotube arrays increased from 6.71% to 7.05%. We demonstrate that each component—Ag NPs, TiO2 NPs, and open-ended freestanding TiO2 nanotube arrays—enhanced the energy conversion efficiency, and the use of a combination of all components in DSSCs resulted in the highest energy conversion efficiency. |
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| spelling | doaj.art-c0b315855de643dfb5f8f448a61aa70f2022-12-21T17:30:54ZengMDPI AGNanomaterials2079-49912016-06-016611710.3390/nano6060117nano6060117Ag Nanoparticle–Functionalized Open-Ended Freestanding TiO2 Nanotube Arrays with a Scattering Layer for Improved Energy Conversion Efficiency in Dye-Sensitized Solar CellsWon-Yeop Rho0Myeung-Hwan Chun1Ho-Sub Kim2Hyung-Mo Kim3Jung Sang Suh4Bong-Hyun Jun5Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, KoreaDepartment of Chemistry, Seoul National University, Seoul 151-747, KoreaDepartment of Chemistry, Seoul National University, Seoul 151-747, KoreaDepartment of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, KoreaDepartment of Chemistry, Seoul National University, Seoul 151-747, KoreaDepartment of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, KoreaDye-sensitized solar cells (DSSCs) were fabricated using open-ended freestanding TiO2 nanotube arrays functionalized with Ag nanoparticles (NPs) in the channel to create a plasmonic effect, and then coated with large TiO2 NPs to create a scattering effect in order to improve energy conversion efficiency. Compared to closed-ended freestanding TiO2 nanotube array–based DSSCs without Ag or large TiO2 NPs, the energy conversion efficiency of closed-ended DSSCs improved by 9.21% (actual efficiency, from 5.86% to 6.40%) with Ag NPs, 6.48% (actual efficiency, from 5.86% to 6.24%) with TiO2 NPs, and 14.50% (actual efficiency, from 5.86% to 6.71%) with both Ag NPs and TiO2 NPs. By introducing Ag NPs and/or large TiO2 NPs to open-ended freestanding TiO2 nanotube array–based DSSCs, the energy conversion efficiency was improved by 9.15% (actual efficiency, from 6.12% to 6.68%) with Ag NPs and 8.17% (actual efficiency, from 6.12% to 6.62%) with TiO2 NPs, and by 15.20% (actual efficiency, from 6.12% to 7.05%) with both Ag NPs and TiO2 NPs. Moreover, compared to closed-ended freestanding TiO2 nanotube arrays, the energy conversion efficiency of open-ended freestanding TiO2 nanotube arrays increased from 6.71% to 7.05%. We demonstrate that each component—Ag NPs, TiO2 NPs, and open-ended freestanding TiO2 nanotube arrays—enhanced the energy conversion efficiency, and the use of a combination of all components in DSSCs resulted in the highest energy conversion efficiency.http://www.mdpi.com/2079-4991/6/6/117open-ended freestanding TiO2 nanotube arraysdye-sensitized solar cellsplasmonicscatteringanodization |
| spellingShingle | Won-Yeop Rho Myeung-Hwan Chun Ho-Sub Kim Hyung-Mo Kim Jung Sang Suh Bong-Hyun Jun Ag Nanoparticle–Functionalized Open-Ended Freestanding TiO2 Nanotube Arrays with a Scattering Layer for Improved Energy Conversion Efficiency in Dye-Sensitized Solar Cells Nanomaterials open-ended freestanding TiO2 nanotube arrays dye-sensitized solar cells plasmonic scattering anodization |
| title | Ag Nanoparticle–Functionalized Open-Ended Freestanding TiO2 Nanotube Arrays with a Scattering Layer for Improved Energy Conversion Efficiency in Dye-Sensitized Solar Cells |
| title_full | Ag Nanoparticle–Functionalized Open-Ended Freestanding TiO2 Nanotube Arrays with a Scattering Layer for Improved Energy Conversion Efficiency in Dye-Sensitized Solar Cells |
| title_fullStr | Ag Nanoparticle–Functionalized Open-Ended Freestanding TiO2 Nanotube Arrays with a Scattering Layer for Improved Energy Conversion Efficiency in Dye-Sensitized Solar Cells |
| title_full_unstemmed | Ag Nanoparticle–Functionalized Open-Ended Freestanding TiO2 Nanotube Arrays with a Scattering Layer for Improved Energy Conversion Efficiency in Dye-Sensitized Solar Cells |
| title_short | Ag Nanoparticle–Functionalized Open-Ended Freestanding TiO2 Nanotube Arrays with a Scattering Layer for Improved Energy Conversion Efficiency in Dye-Sensitized Solar Cells |
| title_sort | ag nanoparticle functionalized open ended freestanding tio2 nanotube arrays with a scattering layer for improved energy conversion efficiency in dye sensitized solar cells |
| topic | open-ended freestanding TiO2 nanotube arrays dye-sensitized solar cells plasmonic scattering anodization |
| url | http://www.mdpi.com/2079-4991/6/6/117 |
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