Ga-Modified Nanostructured ZnO: Characterization and Application in Dye-Sensitized Solar Cells
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Trans Tech Publications Ltd
Trans Tech Publications
Trans Tech Publications
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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.
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Advanced Powder Technology Vi. Stafa-zurich: Trans Tech Publications Ltd, v. 591-593, p. 13-17, 2008.
