Optical Properties of ZnCoO Films and Nanopowders

• Authors: E. Wolska , M. Łukasiewicz , J. Fidelus , W. Łojkowski , E. Guziewicz , M. Godlewski
• Languages of publication: EN

Abstracts

EN

ZnCoO is one of the most studied and promising semiconductor materials for spintronics applications. In this work we discuss optical and electrical properties of ZnCoO films and nanoparticles grown at low temperature by either atomic layer deposition or by a microwave driven hydrothermal method. We report that doping with cobalt quenches a visible photoluminescence of ZnO. We could observe a visible photoluminescence of ZnO only for samples with very low Co fractions (up to 1%). Mechanisms of photoluminescence quenching in ZnCoO are discussed. We also found that ZnO films remained n-type conductive after doping with Co, indicating that a high electron concentration and cobalt 2+ charge state can coexist.

Keywords

EN

68.55.Ln; 78.55.Et; 81.07.Wx; 61.72.uf; 78.66.Hf

Discipline

• 78.66.Hf: II-VI semiconductors
• 81.07.Wx: Nanopowders
• 78.55.Et: II-VI semiconductors
• 68.55.Ln: Defects and impurities: doping, implantation, distribution, concentration, etc.(for diffusion of impurities, see 66.30.J-)
• 61.72.uf: Ge and Si

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 5
• Pages: 918-920

Dates

published

2009-11

Contributors

author

E. Wolska

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
• Institute of High Pressure Physics, Polish Academy of Sciences, "Unipress", Sokołowska 29/37, 01-142 Warsaw, Poland

author

M. Łukasiewicz

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

J. Fidelus

• Institute of High Pressure Physics, Polish Academy of Sciences, "Unipress", Sokołowska 29/37, 01-142 Warsaw, Poland

author

W. Łojkowski

• Institute of High Pressure Physics, Polish Academy of Sciences, "Unipress", Sokołowska 29/37, 01-142 Warsaw, Poland

author

E. Guziewicz

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Godlewski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
• Dept. of Mathematics and Natural Sciences, College of Science, Cardinal S. Wyszyński University, Dewajtis 5, 01-815 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.116.918