Eur. Phys. J. Appl. Phys.
Volume 84, Number 3, December 2018
Materials for Energy harvesting, conversion and storage (Icome 2017)
|Number of page(s)||6|
|Published online||14 January 2019|
Annealing effect on the optical and photoelectrochemical properties of lead oxide★
Laboratoire d'électrochimie et matériaux, Département de génie des procédés, Faculté de Technologie, Université Ferhat Abbas, Sétif-1, 19000, Algeria
2 Laboratoire d'énergétique et d'électrochimie du solide, Département de génie des procédés, Faculté de Technologie, Université Ferhat Abbas, Sétif-1, 19000, Algeria
3 Laboratoire des Technologies Innovantes (LTI), Université de Jules Verne, IUT de l'Oise Allée de la Faïencerie 60100 Creil, France
4 Laboratoire de Physique des Interfaces et des Couches Minces, Ecole Polytechnique, CNRS UMR 7647, 91128 Palaiseau, France
5 Department of Chemistry, Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L-3N6, Canada
* e-mail: firstname.lastname@example.org
Received in final form: 13 October 2018
Accepted: 30 November 2018
Published online: 14 January 2019
Effect of the annealing oxidation time of electrodeposited lead (Pb) on the phase formation of lead oxide (PbO) films is reported. The phase structure, optical properties, size and morphology of the films were investigated by scanning electron microscopy, X-ray diffraction and UV-vis spectroscopy. The relationship between structur and photoelectrochemical properties was investigated. Thin films of PbO produced via air annealing of electrodeposited lead consist of a mixture of two phases, orthorhombic (o-PbO) and tetragonal (t-PbO), that determine the material properties and effectiveness as absorber layer in a photoelectrochemical device. The proportion of tetragonal t-PbO increases for longer heat treatments. After 40 h, the sample consists mainly of tetragonal t-PbO. The p-type semiconducting behavior of lead oxide was studied by photocurrent measurements. Different heat treatments yield variations in the ratio of tetragonal to orthorhombic lead oxide that effect on device performances, where devices with a higher content of tetragonal t-PbO show higher photocurrent than with the orthorhombic phase.
© EDP Sciences, 2018
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