Nanoparticle Layers Transformed from Ordered TiO2 Nanotube Arrays and Dye-Sensitized Solar Cells

Autor:	Mahesh Pandikunta, Zhaoyang Fan, Sergey A. Nikishin, Mark Holtz, Vladimir Kuryatkov, Yahya Alivov, Xuan Pan
Rok vydání:	2009
Předmět:	Nanotube Nanostructure Materials science Oxide Nanoparticle Nanotechnology law.invention Crystal Dye-sensitized solar cell chemistry.chemical_compound Chemical engineering chemistry law Solar cell Titanium dioxide
Zdroj:	MRS Proceedings. 1211
ISSN:	1946-4274 0272-9172
DOI:	10.1557/proc-1211-r08-33
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::93130d3cca7c14a141fdc5671ec20a2d https://doi.org/10.1557/proc-1211-r08-33 Zobrazit plný text záznamu Full text from SpringerLink