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Type: Artigo de evento
Title: Ga-modified Nanostructured Zno: Characterization And Application In Dye-sensitized Solar Cells
Author: Goncalves A.S.
Nogueira A.F.
Davolos M.R.
Masaki N.
Yanagida S.
Antonio S.G.
Paiva-Santos C.O.
Abstract: ZnO has received great attention in many applications due to its electronic and optical properties. We report on the preparation of ZnO and gallium-containing ZnO (ZnO:Ga) nanoparticles by the precipitation method. The nanoparticles have the wurtzite structure and a high crystallinity. Gallium ions are present as Ga 3+, as evidenced by the binding energies through XPS. Porosity and surface area of the powder increased under increasing gallium level, explained by the smaller particle size of ZnO:Ga samples compared with ZnO. The estimated optical band gap of ZnO was 3.2 eV, comparable to ZnO:Ga.
Rights: fechado
Identifier DOI: 
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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