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Ag nanoparticle-deposited TiO2 nanotube arrays for electrodes of Dye-sensitized solar cells.

Kawamura G, Ohmi H, Tan WK, Lockman Z, Muto H, Matsuda A - Nanoscale Res Lett (2015)

Bottom Line: Efficient charge transportation through the ordered nanostructure of TNT arrays should be carried out compared to conventional particulate TiO2 electrodes.In this work, we deposited Ag nanoparticles (NPs) on the wall of TNT arrays to enhance light-harvesting property.Dye-sensitized solar cells with these Ag NP-deposited TNT arrays yielded a higher power conversion efficiency (2.03 %) than those without Ag NPs (1.39 %). 06.60.Ei Sample preparation, 81.05.Bx Metals, Semimetals, Alloys, 81.07.De Nanotubes.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, 441-8580 Aichi Japan.

ABSTRACT

Abstract: Dye-sensitized solar cells composed of a photoanode of Ag nanoparticle (NP)-deposited TiO2 nanotube (TNT) arrays were fabricated. The TNT arrays were prepared by anodizing Ti films on fluorine-doped tin oxide (FTO)-coated glass substrates. Efficient charge transportation through the ordered nanostructure of TNT arrays should be carried out compared to conventional particulate TiO2 electrodes. However, it has been a big challenge to grow TNT arrays on FTO glass substrates with the lengths needed for sufficient light-harvesting (tens of micrometers). In this work, we deposited Ag nanoparticles (NPs) on the wall of TNT arrays to enhance light-harvesting property. Dye-sensitized solar cells with these Ag NP-deposited TNT arrays yielded a higher power conversion efficiency (2.03 %) than those without Ag NPs (1.39 %).

Pacs codes: 06.60.Ei Sample preparation, 81.05.Bx Metals, Semimetals, Alloys, 81.07.De Nanotubes.

No MeSH data available.


Related in: MedlinePlus

UV-Vis spectra of TNT arrays before and after Ag nanoparticle deposition and dye loading
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Fig5: UV-Vis spectra of TNT arrays before and after Ag nanoparticle deposition and dye loading

Mentions: Figure 5 shows the UV-visible (Vis) spectra of TNT arrays on FTO substrates before and after Ag nanoparticle deposition and dye loading. TNT arrays showed strong absorption in the UV region due to interband transition of anatase. In addition to this absorption, TNT arrays with Ag nanoparticles showed a broad peak centered at 490 nm, which is attributed to LSPR of Ag nanoparticles. TNT arrays adsorbed with dye showed another absorption peak at 520 nm, which is defined as absorption of the dye molecules. TNT arrays with both Ag nanoparticles and dye (TNT-Ag-dye) showed a broad and strong peak centered at 500 nm, which is presumably integrated absorption of Ag nanoparticles and dye. This result indicates that Ag nanoparticle deposition clearly enhances the photon harvesting ability of TNT arrays adsorbed with dye.Fig. 5


Ag nanoparticle-deposited TiO2 nanotube arrays for electrodes of Dye-sensitized solar cells.

Kawamura G, Ohmi H, Tan WK, Lockman Z, Muto H, Matsuda A - Nanoscale Res Lett (2015)

UV-Vis spectra of TNT arrays before and after Ag nanoparticle deposition and dye loading
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4440869&req=5

Fig5: UV-Vis spectra of TNT arrays before and after Ag nanoparticle deposition and dye loading
Mentions: Figure 5 shows the UV-visible (Vis) spectra of TNT arrays on FTO substrates before and after Ag nanoparticle deposition and dye loading. TNT arrays showed strong absorption in the UV region due to interband transition of anatase. In addition to this absorption, TNT arrays with Ag nanoparticles showed a broad peak centered at 490 nm, which is attributed to LSPR of Ag nanoparticles. TNT arrays adsorbed with dye showed another absorption peak at 520 nm, which is defined as absorption of the dye molecules. TNT arrays with both Ag nanoparticles and dye (TNT-Ag-dye) showed a broad and strong peak centered at 500 nm, which is presumably integrated absorption of Ag nanoparticles and dye. This result indicates that Ag nanoparticle deposition clearly enhances the photon harvesting ability of TNT arrays adsorbed with dye.Fig. 5

Bottom Line: Efficient charge transportation through the ordered nanostructure of TNT arrays should be carried out compared to conventional particulate TiO2 electrodes.In this work, we deposited Ag nanoparticles (NPs) on the wall of TNT arrays to enhance light-harvesting property.Dye-sensitized solar cells with these Ag NP-deposited TNT arrays yielded a higher power conversion efficiency (2.03 %) than those without Ag NPs (1.39 %). 06.60.Ei Sample preparation, 81.05.Bx Metals, Semimetals, Alloys, 81.07.De Nanotubes.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, 441-8580 Aichi Japan.

ABSTRACT

Abstract: Dye-sensitized solar cells composed of a photoanode of Ag nanoparticle (NP)-deposited TiO2 nanotube (TNT) arrays were fabricated. The TNT arrays were prepared by anodizing Ti films on fluorine-doped tin oxide (FTO)-coated glass substrates. Efficient charge transportation through the ordered nanostructure of TNT arrays should be carried out compared to conventional particulate TiO2 electrodes. However, it has been a big challenge to grow TNT arrays on FTO glass substrates with the lengths needed for sufficient light-harvesting (tens of micrometers). In this work, we deposited Ag nanoparticles (NPs) on the wall of TNT arrays to enhance light-harvesting property. Dye-sensitized solar cells with these Ag NP-deposited TNT arrays yielded a higher power conversion efficiency (2.03 %) than those without Ag NPs (1.39 %).

Pacs codes: 06.60.Ei Sample preparation, 81.05.Bx Metals, Semimetals, Alloys, 81.07.De Nanotubes.

No MeSH data available.


Related in: MedlinePlus