Synthesis of Al doped ZnO nanopowders and their enhanced luminescence

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

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

Abstract

Nanocrystalline ZnO doped with different ions shows improved electronic, optical, catalytic or antiseptic properties with high potential for high tech applications. These properties are strongly dependant on the microstructure and surface characteristics. New processes for the synthesis and processing are required to control and optimize the chemical composition, crystalline sizes and grain morphology. We present original results on the synthesis of zinc oxide powders with different Al content by two different procedures: hydrothermal route starting from soluble aqueous precursors and evaporation-condensation in a solar furnace of the hydrothermal synthesised powders.

The influence of the synthesis parameters on the chemical and microstructural characteristics of nanophases synthesized in the two methods has been studied using chemical analytical methods, XRD, BET, picnometric density, SEM and TEM. Some results on the luminescence properties of Al-doped ZnO nanopowders are finally presented.

Acknowledgement: Research supported by contract CEEX 69/2006 SINAPS financed by Romanian Agency for Research and Innovation , ECO-NET “Fun Nanos” financed by EGIDE-France and COST Action D 30.

 

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Presentation: Poster at COST D30 Final Evaluation Meeting, by Robert R. Piticescu
See On-line Journal of COST D30 Final Evaluation Meeting

Submitted: 2007-10-09 09:17
Revised:   2009-06-07 00:44