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POUPON , Laurent

Last name: POUPON

First name: Laurent

1999 (v1)

Journal article

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Physical and quasi-chemical study of point defects in aluminium or niobium-doped polycrystalline tin dioxide

Poupon, Laurent Iacconi, Philibert Pijolat, Christophe

The influence of aluminium or niobium doping on the thermoluminescence (TL) of polycrystalline tetravalent tin dioxide is studied. The non-stoichiometry of SnO2−x is characterised by the presence of oxygen vacancies. These vacancies, once or twice ionised behave as donor centres. Introduction of trivalent or pentavalent impurities in the matrix...

Uploaded on: December 3, 2022
September 14, 1997 (v1)

Conference paper

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Identification of point defects in tin dioxide: Experimental and theoretical approach

Poupon, Laurent Iacconi, Philibert Pijolat, Christophe

Thermoluminescence (TL) glow curves of polycrystalline tin dioxide samples exhibit three main peaks below room temperature. Their relative intensities depend on experimental conditions. Especially, they are modified by aluminum doping or by wet air exposition. In SnO2, we suggest that ionised oxygen vacancies and hydroxyl groups are responsible...

Uploaded on: December 3, 2022