Eur. Phys. J. Appl. Phys.
Volume 85, Number 2, February2019
Materials for Energy harvesting, conversion and storage (Icome 2017)
|Number of page(s)||11|
|Section||Nanomaterials and Nanotechnologies|
|Published online||28 February 2019|
Correlation between photoelectrochemical and photoluminescence measurements of Ag-doped ZnO/ITO photoanode★
Faculté des sciences de Bizerte, Université de Carthage, Tunis, Tunisia
2 Laboratory of Nanomaterials and Systems for Renewable Energies (LaNSER), Research and Technology Center of Energy, Technopôle Borj-Cedria, Hammam-Lif, Tunis, Tunisia
* e-mail: firstname.lastname@example.org
Received in final form: 16 December 2018
Accepted: 25 January 2019
Published online: 28 February 2019
Silver-doped zinc oxide (SZO) thin films have been deposited onto indium-doped tin oxide substrates (ITO) using sol–gel spin-coating technique with different Ag doping content (1, 2 and 5% Ag). The effect of silver incorporation on structural, morphological, optical and photoelectrochemical (PEC) properties of the SZO films was investigated. Ag incorporation resulted in an enhanced grain size and thickness of elaborated SZO films. Scanning electron micrographs exhibited a uniform distribution of spherical grains with particle size increment after doping. Band gap energies were found to increase after Ag doping. Photoluminescence (PL) measurements revealed that the energy band gaps of the films were in the UV region. As compared to pure ZnO thin film, the samples are more photoactive, and the film containing 2% Ag yielded the highest photocurrent. A correlation study between PEC and PL measurements of Ag-doped ZnO/ITO photoanode leads to a reverse variation. Charge transfer processes at the ZnO–electrolyte interface were identified by electrochemical impedance spectroscopy.
© EDP Sciences, 2019
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.