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

作者：Kawamura Go^*; Ohmi Hayato; Tan Wai Kian; Lockman Zainovia; Muto Hiroyuki; Matsuda Atsunori

来源：Nanoscale Research Letters, 2015, 10(1): 219.

DOI：10.1186/s11671-015-0924-1

• Anodization
• TiO2 nanotube arrays
• Ag nanoparticles
• Light harvesting
• Dye-sensitized solar cells

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 %).
06.60.Ei Sample preparation, 81.05.Bx Metals, Semimetals, Alloys, 81.07.De Nanotubes.

• 出版日期2015-5-15