%0 Journal Article
%T Structural and photoluminescence properties of ZnO thin films prepared by sol-gel process
%+ Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS)
%+ Laboratoire de technologies industrielles (LTI)
%+ Institut d'Electronique du Solide et des Systèmes (InESS)
%A Petersen, J.
%A Brimont, Christelle
%A Gallart, M.
%A Cregut, O.
%A Schmerber, G.
%A Gilliot, P.
%A Honerlage, B.
%A Ulhaq-Bouillet, C.
%A Rehspringer, J. L.
%A Leuvrey, C.
%A Colis, S.
%A Aubriet, H.
%A Becker, C.
%A Ruch, D.
%A Slaoui, A.
%A Dinia, A.
%< avec comité de lecture
%Z GES:08-111
%@ 0021-8979
%J Journal of Applied Physics
%I American Institute of Physics
%V 104
%P 113539
%8 2008
%D 2008
%R 10.1063/1.3021358
%K ZINC-OXIDE FILMS
%K MAGNETIC SEMICONDUCTORS
%K OPTICAL-PROPERTIES
%K EXCITON
%K FERROMAGNETISM
%K EPILAYERS
%K GROWTH
%Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Journal articles
%X The present study focuses on the structural and optical properties of ZnO thin films fabricated by sol-gel process and spin coated onto Si (100) and quartz substrates. The ZnO films have a hexagonal wurtzite structure with a grain size of about 50 nm. The x-ray photoelectron spectroscopy measurements reveal the presence of Zn2+ and of zinc hydroxyl groups at the film. Optical properties were studied by photoluminescence (PL) and absorption spectroscopy at low and room temperatures. The absorption spectrum is dominated by a sharp excitonic peak at room and low temperatures. At room temperature, PL observations show two transitions: one near the absorption edge in the ultraviolet (UV) region and the second centered at 640 nm, characteristic of the deep electronic levels in the bandgap. The spectrum at 6 K is dominated by donor bound exciton lines and donor-acceptor pair transitions. LO-phonon replica and two-electron satellite transitions are also observed. These optical characteristics are a signature of good structural quality of the films. c 2008 American Institute of Physics. [DOI: 10.1063/1.3021358]
%G English
%L hal-00545174
%U https://hal.science/hal-00545174
%~ CNRS
%~ UNIV-STRASBG
%~ SITE-ALSACE