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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Structural, optical, and electrical properties of Yb-doped ZnO thin films prepared by spray pyrolysis method
Journal of Applied Physics, Volume 109, No. 3, Article 033708, Year 2011
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Description
Yb-doped ZnO thin films were prepared on glass substrates by spray pyrolysis technique in order to investigate the insertion of Yb ions in the ZnO matrix and the related optical properties of the films. The molar ratio of Yb in the spray solution was varied in the range of 0-5 at. %. X-ray diffraction patterns showed that the undoped and Yb-doped ZnO films exhibit the hexagonal wurtzite crystal structure with a preferential orientation along [002] direction. No secondary phase is observed in Yb-doped ZnO films. All films exhibit a transmittance between 75 and 90% in the visible range with a sharp absorption onset about 375 nm corresponding to the fundamental absorption edge at 3.3 eV. The photoluminescence measurements show a clear luminescence band at 980 nm that is characteristic of Yb3+ transition between the electronic levels 2F5/2 and 2F7/2. This is an experimental evidence for an efficient energy transfer from ZnO matrix to Yb3+. Hall effect measurements showed low resistivities and high carrier mobilities which makes these films of interest to photovoltaic devices. © 2011 American Institute of Physics.
Authors & Co-Authors
Soumahoro, Ibrahima
Morocco, Rabat
Faculté Des Sciences Rabat
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
France, Illkirch-graffenstaden
Laboratoire Des Sciences de L'ingénieur, de L'informatique et de L'imagerie
Schmerber, Guy
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
Douayar, A.
Morocco, Rabat
Faculté Des Sciences Rabat
Colis, Silviu
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
Abd-Lefdil, Mohammed
Morocco, Rabat
Faculté Des Sciences Rabat
Hassanain, N.
Morocco, Rabat
Faculté Des Sciences Rabat
Berrada, Amal
Morocco, Rabat
Faculté Des Sciences Rabat
Muller, Dominique
France, Illkirch-graffenstaden
Laboratoire Des Sciences de L'ingénieur, de L'informatique et de L'imagerie
Slaoui, Adelilah
France, Illkirch-graffenstaden
Laboratoire Des Sciences de L'ingénieur, de L'informatique et de L'imagerie
Rinnert, Hervé
France, Nancy
Institut Jean Lamour
Dinia, Aziz
France, Strasbourg
Ipcms Institut de Physique et Chimie Des Matériaux de Strasbourg
Statistics
Citations: 81
Authors: 11
Affiliations: 4
Identifiers
Doi:
10.1063/1.3544307
ISSN:
00218979