SERIER, Hélène; GAUDON, Manuel; MÉNÉTRIER, Michel

doi:10.1016/j.solidstatesciences.2009.03.007

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SERIER, Hélène
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GAUDON, Manuel
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

MÉNÉTRIER, Michel
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Solid State Sciences. 2009, vol. 11, n° 7, p. 1192-1197

Elsevier

Résumé en anglais

Al-doped ZnO powder was synthesized via the Pechini route with a doping rate varying from 1 to 4 mol.%. A solubility limit has been estimated under 0.3 mol.% of Al using X-ray diffraction refinements. The incorporation of aluminium into the ZnO lattice was investigated by <sup>27</sup>Al NMR, which suggests an extremely low amount of Al in a distribution of sites in ZnO. In order to assess the impact of such a low dopant amount, diffuse reflection experiments were performed for a wavelength range from 200 to 2500 nm. If the effect of doping was negligible for samples prepared at 850 °C, annealing at 1200 °C clearly reveals enhanced IR absorption properties for the doped samples, which are similar whatever be the nominal Al content.< Réduire

Mots clés en anglais

Zinc oxide

Powder

Diffuse reflection

IR absorption

<sup>27</sup>Al MAS NMR

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Al-doped ZnO powdered materials: Al solubility limit and IR absorption properties

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