Luminescence properties of zinc oxide nanopowders doped with Al ions obtained by the hydrothermal and vapour condensation methods.

Tomasz Strachowski 1,2Witold Łojkowski 1Marek Godlewski 3,4Sergiy A. Yatsunenko 3Ewa Grzanka 1Adam M. Presz 1Robert R. Piticescu 5Claude J. Monty 6

1. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland
2. Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland
3. Polish Academy of Sciences, Institute of Physics, al. Lotników 32/46, Warszawa 02-668, Poland
4. Cardinal Stefan Wyszynski University, College of Science, Warszawa, Poland
5. Institute for Non-ferrous and Rare Metals, 102 Biruintei Blvd., Pantelimon 73957, Romania
6. CNRS laboratoire Procedes, Materiaux et Energie solaire (PROMES), BP5 Odeillo, Font-Romeu 66120, France

Abstract

In this work we analyze the influence of Al ions doping on light emission efficiency and microstructure of zinc oxide nanopowders obtained by the hydrothermal and vapour condensation method. Vaporization of the precursor nanopowders was caused by high solar energy and subsequent deposition. The structure, crytallinity, luminescense properties were investigated using a range of techniques, including SEM, XRD, spectrofluorymeter and photomultipler for the PL detection. We report an increase of lattice constant with increasing level of Al ions doping as well as large emission enhancement, which we relate to surface passivation of recombination mechanism and plasmon mechanism of photoluminescence stimulation.

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Presentation: Poster at E-MRS Fall Meeting 2007, Acta Materialia Gold Medal Workshop, by Tomasz Strachowski
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-07-20 11:16
Revised:   2009-06-07 00:44
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