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Bahar J, Lghazi Y, Youbi B, Himi MA, El Haimer C, Aynaou A, Sahlaoui A, Bimaghra I. Effect of applied potential on the optical and electrical properties of Cu 2CoO 3. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27103-0. [PMID: 37084056 DOI: 10.1007/s11356-023-27103-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/14/2023] [Indexed: 05/03/2023]
Abstract
The effect of the applied potential on the crystallography, morphology, optical, and electrical properties of copper-cobalt oxide (Cu2CoO3) co-electrodeposited on ITO (Indium Tin Oxide) substrate has been studied. The electrochemical behavior of Cu2CoO3 using cyclic voltammetry showed that the co-electrodeposition of Cu2CoO3 occurred at a negative potential of - 0.70 V versus SCE, following a quasi-reversible reaction controlled by the diffusion process. Chronoamperometry (CA) revealed that the nucleation and growth mechanism of Cu2CoO3 follows the instantaneous three-dimensional process according to Scharifker and Hill model. X-ray diffraction (XRD) analysis indicated that the resulting layers at different applied potentials exhibited an orthorhombic structure with a preferred orientation of the crystallites (011) plan. The morphology of the surface changes with potential applied. Furthermore, the optical properties of the copper and cobalt oxide films were investigated using UV-visible spectroscopy; showing that the band gap energy for all the materials increases when the applied potential decreases. The Cu2CoO3 layers obtained are p-type semiconductors. The acceptor density (NA) increases with decreasing applied potential.
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Affiliation(s)
- Jihane Bahar
- Bio-Geosciences and Materials Engineering Laboratory, Higher Normal School, Hassan II University of Casablanca, Casablanca, Morocco.
| | - Youssef Lghazi
- Bio-Geosciences and Materials Engineering Laboratory, Higher Normal School, Hassan II University of Casablanca, Casablanca, Morocco
| | - Boubaker Youbi
- Bio-Geosciences and Materials Engineering Laboratory, Higher Normal School, Hassan II University of Casablanca, Casablanca, Morocco
| | - Mohammed Ait Himi
- Bio-Geosciences and Materials Engineering Laboratory, Higher Normal School, Hassan II University of Casablanca, Casablanca, Morocco
| | - Chaimaa El Haimer
- Bio-Geosciences and Materials Engineering Laboratory, Higher Normal School, Hassan II University of Casablanca, Casablanca, Morocco
| | - Aziz Aynaou
- Bio-Geosciences and Materials Engineering Laboratory, Higher Normal School, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ahmed Sahlaoui
- Bio-Geosciences and Materials Engineering Laboratory, Higher Normal School, Hassan II University of Casablanca, Casablanca, Morocco
| | - Itto Bimaghra
- Bio-Geosciences and Materials Engineering Laboratory, Higher Normal School, Hassan II University of Casablanca, Casablanca, Morocco
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Youbi B, Lghazi Y, Himi MA, Aynaou A, Bahar J, Haimer CE, Ouedrhiri A, Sahlaoui A, Bimaghra I. Nucleation and growth of ZnTe thin layers electrodeposited on ITO substrate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-26352-3. [PMID: 36905542 DOI: 10.1007/s11356-023-26352-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/05/2023] [Indexed: 06/18/2023]
Abstract
In order to develop materials able to guarantee optimal characteristics in terms of environmental compatibility, abundance, and photoactivity, zinc telluride (ZnTe) has become a great candidate for optoelectronic and photovoltaic device applications. In this work, on the basis of electrochemical techniques including cyclic voltammetry and chronoamperometry, it was found that the electrodeposition of zinc telluride (ZnTe) on indium tin oxide substrate (ITO) is a quasi-reversible reaction controlled by the diffusion process. The nucleation and growth mechanism follows the instantaneous three-dimensional process according to Scharifker and Hill model. The crystallographic structure and film morphology were studied by XRD and SEM analyses, respectively. ZnTe films have a cubic crystal structure, and they are characterized by good homogeneity. The optical measurements of the deposited films were performed, and a direct energy gap of 2.39 eV was determined by UV-visible spectroscopy.
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Affiliation(s)
- Boubaker Youbi
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco.
- Centre Régional des Métiers de l'Education et de la Formation Casablanca-Settat, Casablanca, Morocco.
| | - Youssef Lghazi
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco
| | - Mohammed Ait Himi
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco
| | - Aziz Aynaou
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco
| | - Jihane Bahar
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco
| | - Chaimaa El Haimer
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco
| | - Abdessamad Ouedrhiri
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco
| | - Ahmed Sahlaoui
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco
| | - Itto Bimaghra
- Laboratoire Bio-Géosciences et Ingénierie des Matériaux, Ecole Normale Supérieure, Université Hassan II de Casablanca, Casablanca, Morocco
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El Haimer C, Lghazi Y, Bahar J, Youbi B, Ait Himi M, Aynaou A, Bimaghra I. Electrochemical properties of Bi2Se3 layers semiconductor elaborated by electrodeposition. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Guo S, Henschel M, Wolf D, Pohl D, Lubk A, Blon T, Neu V, Leistner K. Size-Specific Magnetic Configurations in Electrodeposited Epitaxial Iron Nanocuboids: From Landau Pattern to Vortex and Single Domain States. NANO LETTERS 2022; 22:4006-4012. [PMID: 35533100 DOI: 10.1021/acs.nanolett.2c00607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
As the size of magnetic devices continuously decreases, the creation of three-dimensional nanomagnets and the understanding of their magnetic configurations become increasingly important for modern applications. Here, by progressive nucleation during epitaxial nanoelectrodeposition, we synthesize single-crystal iron nanocuboids with sizes ranging 10 to 200 nm on one sample. The size-dependent magnetic configurations of these nanocuboids are studied by quantitative magnetic force microscopy and electron holography. In conjunction, a "magnetic configuration versus size" phase diagram is established via micromagnetic simulations. Both experiment and theory reveal a sequential transition from Landau pattern to vortex and finally single domain when decreasing the sizes of the nanocuboids. The combinatorial-like approach leads to a quantitative understanding of the magnetic configurations of the nanomagnets in a broad size range. It can be transferred to other materials and shapes and thereby presents an advanced route to enrich the material library for future nanodevice design.
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Affiliation(s)
| | | | | | - Darius Pohl
- Dresden Center for Nanoanalysis, Center for Advancing Electronics Dresden, TU Dresden, 01069 Dresden, Germany
| | - Axel Lubk
- Leibniz IFW Dresden, 01069 Dresden, Germany
| | - Thomas Blon
- Université de Toulouse, INSA-CNRS-UPS, LPCNO,135 Av. Rangueil, 31077 Toulouse, France
| | - Volker Neu
- Leibniz IFW Dresden, 01069 Dresden, Germany
| | - Karin Leistner
- Leibniz IFW Dresden, 01069 Dresden, Germany
- Electrochemical Sensors and Energy Storage, Faculty of Natural Sciences, Institute of Chemistry, TU Chemnitz, 09111 Chemnitz, Germany
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Bahar J, Lghazi Y, Youbi B, Ait Himi M, Bimaghra I. Comparative study of nucleation and growth mechanism of cobalt electrodeposited on ITO substrate in nitrate and chloride electrolytes. J Solid State Electrochem 2021. [DOI: 10.1007/s10008-021-04961-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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El Attar A, Oularbi L, Chemchoub S, El Rhazi M. Effect of electrochemical activation on the performance and stability of hybrid (PPy/Cu2O nanodendrites) for efficient ethanol oxidation in alkaline medium. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115042] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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