Nanoparticle layers transformed from ordered TiO2 nanotube arrays and dye-sensitized solar cells

Yahya Alivov, Xuan Pan, Mahesh Pandikunta, Vladimir Kuryatkov, Sergey Nikishin, Mark Holtz, Zhaoyang Fan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Transformation of titanium dioxide (TiO2) nanotubes (NTs) to truncated bipyramidal shape nanoparticles (NPs) with a large fraction of photo-catalytically active {001} facet surface was observed after thermal annealing TiO2 ordered nanotube arrays in fluorine ambient. Size of the formed nanoparticles depended on fluorine concentration and can be controlled from 20 nm to 350 nm. The crystal and optical properties of nanoparticle layers are superior to those of nanotube arrays, which are also annealed but without geometrical transformation. Using nanoparticle layers formed by this method we have fabricated dye-sensitized solar cells (DSSCs) with different size NPs in the range 35-350 nm. The dependence of solar cell performance on NP size is discussed.

Original languageEnglish
Title of host publicationAdvanced Nanostructured Solar Cells
Pages69-73
Number of pages5
StatePublished - 2010
Event2009 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 30 2009Dec 4 2009

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1211
ISSN (Print)0272-9172

Conference

Conference2009 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/30/0912/4/09

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    Alivov, Y., Pan, X., Pandikunta, M., Kuryatkov, V., Nikishin, S., Holtz, M., & Fan, Z. (2010). Nanoparticle layers transformed from ordered TiO2 nanotube arrays and dye-sensitized solar cells. In Advanced Nanostructured Solar Cells (pp. 69-73). (Materials Research Society Symposium Proceedings; Vol. 1211).