Professor MOHAMED HENINI's Outputs (113)

Optical response of green synthesized thin Cr2O3 films prepared via drop and spin coatings (2023)
Journal Article
Tsegay, M., Gebretinsae, H., Welegergs, G., Azizi, S., Seopela, M., Henini, M., Maaza, M., & Nuru, Z. (2023). Optical response of green synthesized thin Cr2O3 films prepared via drop and spin coatings. Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2023.06.225

This study investigated the impact of optical bandgap energy on the optical constants of Cr2O3 thin films, which were prepared via green synthesis method and deposited using drop and spin-coatings at 600, 800, 1000, and 1200 rpm onto Cu substrates. T... Read More about Optical response of green synthesized thin Cr2O3 films prepared via drop and spin coatings.

Direct synthesis of sodium doped Cu2O/GO nanocomposites for catalytic hydrogen production from NaBH4 (2023)
Journal Article
Alshammari, K., Alhassan, S., Alshammari, A. H., Alotaibi, T., Alshammari, M., Taha, T. A. M., Alotibi, S., & Henini, M. (2023). Direct synthesis of sodium doped Cu2O/GO nanocomposites for catalytic hydrogen production from NaBH4. Diamond and Related Materials, 137, Article 110148. https://doi.org/10.1016/j.diamond.2023.110148

In this work, Cu2O/GO doped Na nanocomposites were prepared via sol-gel auto-combustion procedure. The material structure was analysed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and environmental scanning electron m... Read More about Direct synthesis of sodium doped Cu2O/GO nanocomposites for catalytic hydrogen production from NaBH4.

On the nature of majority and minority traps in β-Ga2O3: A review (2023)
Journal Article
Madani, L., Nouredine, S., Prasad, C. V., Mohamed, H., & Rim, Y. S. (2023). On the nature of majority and minority traps in β-Ga2O3: A review. Materials Today Physics, 36, Article 101155. https://doi.org/10.1016/j.mtphys.2023.101155

In the last decade, researchers and commercial companies have paid great attention to ultrawide bandgap semiconductors especially gallium oxide (Ga2O3). Ga2O3 has very interesting properties such as a bandgap higher than 4.8 eV, high electrical break... Read More about On the nature of majority and minority traps in β-Ga2O3: A review.

Determination of electronic band structure of quaternary ferromagnetic Ga0.97- y Mn0.03CryAs epitaxial layers (2023)
Journal Article
Donmez, O., Gunes, M., Henini, M., & Erol, A. (2023). Determination of electronic band structure of quaternary ferromagnetic Ga0.97- y Mn0.03CryAs epitaxial layers. Physica B: Condensed Matter, 665, Article 415074. https://doi.org/10.1016/j.physb.2023.415074

Introducing transition metals to conventional III-V semiconductors anomalously changes their fundamental characteristics, such as electronic, magnetic, and structural properties. In this study, we show that the valence band anti-cro... Read More about Determination of electronic band structure of quaternary ferromagnetic Ga0.97- y Mn0.03CryAs epitaxial layers.

Dilute GaAs1−xBix epilayers with different bismuth concentrations grown by Molecular Beam Epitaxy: A promising candidate for gamma radiation sensor applications (2023)
Journal Article
Alhassni, A. A., Felix, J. F., Marroquin, J. F. R., Alhassan, S., Alghamdi, H., Almunyif, A., de Azevedo, W. M., Lunz, J., Archanjo, B. S., & Henini, M. (2023). Dilute GaAs1−xBix epilayers with different bismuth concentrations grown by Molecular Beam Epitaxy: A promising candidate for gamma radiation sensor applications. Applied Surface Science, 636, Article 157787. https://doi.org/10.1016/j.apsusc.2023.157787

Radiation interaction studies are very important for exploring the technological applications of new materials in radiation environments. This work reports the effect of gamma radiation dose on the structural and optical properties of dilute GaAs1−xB... Read More about Dilute GaAs1−xBix epilayers with different bismuth concentrations grown by Molecular Beam Epitaxy: A promising candidate for gamma radiation sensor applications.

0D-2D heterostructure for making very large quantum registers using ‘itinerant’ Bose-Einstein condensate of excitons (2023)
Journal Article
Bhunia, A., Singh, M. K., Huwayz, M. A., Henini, M., & Datta, S. (2023). 0D-2D heterostructure for making very large quantum registers using ‘itinerant’ Bose-Einstein condensate of excitons. Materials Today Electronics, 4, Article 100039. https://doi.org/10.1016/j.mtelec.2023.100039

Presence of coherent ‘resonant’ tunneling in quantum dot (zero-dimensional) - quantum well (two-dimensional) heterostructure is necessary to explain the collective oscillations of average electrical polarization of excitonic dipoles over a macroscopi... Read More about 0D-2D heterostructure for making very large quantum registers using ‘itinerant’ Bose-Einstein condensate of excitons.

Investigation of deep defects and their effects on the properties of NiO/β-Ga2O3 heterojuncion diodes (2023)
Journal Article
Almalki, A., Madani, L., Sengouga, N., Alhassan, S., Alotaibi, S., Alhassni, A., Almunyif, A., Chauhan, J. S., Henini, M., Galeti, H. V. A., Gobato, Y. G., de Godoy, M. P. F., Andrade, M. B., Souto, S., Zhou, H., Wang, B., Xiao, M., Qin, Y., & Zhang, Y. (2023). Investigation of deep defects and their effects on the properties of NiO/β-Ga2O3 heterojuncion diodes. Materials Today Electronics, 4, Article 100042. https://doi.org/10.1016/j.mtelec.2023.100042

In this study, the effect of rapid thermal annealing (RTA) on the electrical and optical properties of NiO/ β-Ga2O3 heterojunction diodes was investigated using capacitance-voltage, current-voltage, Deep Level Transient Spectroscopy (DLTS), Laplace D... Read More about Investigation of deep defects and their effects on the properties of NiO/β-Ga2O3 heterojuncion diodes.

Effects of substrate material on the electrical properties of self-assembled InAs quantum dots-based laser structures (2023)
Journal Article
Al Huwayz, M., Jameel, D. A., Alotaibi, S., Alhassan, S., Almalki, A., Al Saqri, N., Al Saleh, Y., Alhassni, A., Almunyif, A., Lemine, O. M., Salhi, A., & Henini, M. (2023). Effects of substrate material on the electrical properties of self-assembled InAs quantum dots-based laser structures. Applied Physics A, 129(6), Article 405. https://doi.org/10.1007/s00339-023-06626-w

In this work, the effects of the substrate material on the electrical properties of self-assembled InAs quantum dots (QDs)-based laser structures have been reported. Two InAs QD laser structures with the same active regions deposited on GaAs and Si s... Read More about Effects of substrate material on the electrical properties of self-assembled InAs quantum dots-based laser structures.

Preparation and Optical Properties of PVDF-CaFe2O4 Polymer Nanocomposite Films (2023)
Journal Article
Alhassan, S., Alshammari, M., Alshammari, K., Alotaibi, T., Alshammari, A. H., Fawaz, Y., Taha, T. A. M., & Henini, M. (2023). Preparation and Optical Properties of PVDF-CaFe2O4 Polymer Nanocomposite Films. Polymers, 15(9), Article 2232. https://doi.org/10.3390/polym15092232

In this work, a synthesis technique for highly homogeneous PVDF-CaFe2O4 polymer films direct from solution was developed. The structural characterizations were conducted using XRD, FTIR, and ESEM experimental techniques. The XRD characteristic peaks... Read More about Preparation and Optical Properties of PVDF-CaFe2O4 Polymer Nanocomposite Films.

Synthesis and optical properties of polyvinylidene difluoride nanocomposites comprising MoO3/g-C3N4 (2023)
Journal Article
Alhassan, S., Alshammari, K., Alshammari, M., Alotaibi, T., Alshammari, A. H., Fawaz, Y., Taha, T., & Henini, M. (2023). Synthesis and optical properties of polyvinylidene difluoride nanocomposites comprising MoO3/g-C3N4. Results in Physics, 48, Article 106403. https://doi.org/10.1016/j.rinp.2023.106403

The present study describes the optical properties for prepared polymer nanocomposites of PVDF at different content of MoO3/g-C3N4. The structural properties of polymer films were analysed via XRD, FTIR and ESEM techniques. The XRD diffraction patter... Read More about Synthesis and optical properties of polyvinylidene difluoride nanocomposites comprising MoO3/g-C3N4.

Room Temperature Surface Bio-Sulfurisation via Natural Sativum Annilin and Bioengineering of Nanostructured CuS/Cu2S (2023)
Journal Article
Welegergs, G., Numan, N., Dube, S., Nuru, Z., Botha, N., Cloete, K., Azizi, S., Madiba, I., Akbari, M., Tsegay, M., Gebretinsae, H., Mtshali, C., Khumalo, Z., Ezema, F., Krief, A., Gibaud, A., Henini, M., Seopela, M., Chaker, M., & Maaza, M. (2023). Room Temperature Surface Bio-Sulfurisation via Natural Sativum Annilin and Bioengineering of Nanostructured CuS/Cu2S. Nano-Horizons: Journal of Nanosciences and Nanotechnologies, 1, 1-27. https://doi.org/10.25159/nanohorizons.45486dad4f94

In this contribution, we report, for the first time, on the surface bio-sulfurisation of metallic surfaces at room temperature via natural sativum annilin. More precisely, this bio-sulfurisation is validated on bioengineered nanostructured Cu2-XS sur... Read More about Room Temperature Surface Bio-Sulfurisation via Natural Sativum Annilin and Bioengineering of Nanostructured CuS/Cu2S.

Investigation of structural and electrical properties of ITO thin films and correlation to optical parameters extracted using novel method based on PSO algorithm (2023)
Journal Article
Amrani, R., Garoudja, E., Lekoui, F., Filali, W., Neggaz, H., Djebeli, Y. A., Henni, L., Hassani, S., Kezzoula, F., Oussalah, S., Al mashary, F., & Henini, M. (2023). Investigation of structural and electrical properties of ITO thin films and correlation to optical parameters extracted using novel method based on PSO algorithm. Bulletin of Materials Science, 46(1), Article 8. https://doi.org/10.1007/s12034-022-02845-8

Thermally annealed DC sputtered indium tin oxide (ITO) thin films were investigated for improvement in properties. The structural and optoelectronic characteristics of as-grown and air annealed films were studied and correlated to the film deposition... Read More about Investigation of structural and electrical properties of ITO thin films and correlation to optical parameters extracted using novel method based on PSO algorithm.

Peculiar Size Effects in Nanoscaled Systems (2022)
Journal Article
Maaza, M., Henini, M., Ezema, F., Manikandan, E., Kennedy, J., Bouziane, K., Chaker, M., Gibaud, A., Haque, A. K. F., Nuru, Z., Ahmad, I., Obodo, R., & Akbari, M. (2022). Peculiar Size Effects in Nanoscaled Systems. Nano-Horizons: Journal of Nanosciences and Nanotechnologies, 1, https://doi.org/10.25159/nanohorizons.9d53e2220e3

In this minireview, we intend to shed light on relatively recent examples related to the size and shape effects on materials at the nanoscale and their usage to test a set of quantum mechanics governed phenomena.

Current-induced degradation behaviors of InGaN/GaN multiple quantum well UV photodetectors: Role of electrically active defects (2022)
Journal Article
Dalapati, P., Almalki, A., Alhassan, S., Alotaibi, S., Huwayz, M. A., Nakabayashi, T., Egawa, T., Miyoshi, M., & Henini, M. (2022). Current-induced degradation behaviors of InGaN/GaN multiple quantum well UV photodetectors: Role of electrically active defects. Sensors and Actuators A: Physical, 347, Article 113935. https://doi.org/10.1016/j.sna.2022.113935

To examine the critical role of electrically active defects and surface states in InGaN/GaN multiple quantum well (MQW) ultraviolet photodetectors (UV-PDs), the study of degradation mechanisms in such devices is very important. In this work, we have... Read More about Current-induced degradation behaviors of InGaN/GaN multiple quantum well UV photodetectors: Role of electrically active defects.

Optical properties of self-assembled InAs quantum dots based P–I–N structures grown on GaAs and Si substrates by Molecular Beam Epitaxy (2022)
Journal Article
Al Huwayz, M., Galeti, H., Lemine, O. M., Ibnaouf, K. H., Alkaoud, A., Alaskar, Y., Salhi, A., Alhassan, S., Alotaibi, S., Almalki, A., Almunyif, A., Alhassni, A., Jameel, D. A., Gobato, Y. G., & Henini, M. (2022). Optical properties of self-assembled InAs quantum dots based P–I–N structures grown on GaAs and Si substrates by Molecular Beam Epitaxy. Journal of Luminescence, 251, Article 119155. https://doi.org/10.1016/j.jlumin.2022.119155

Extensive work on InAs quantum dots grown on GaAs substrates has been reported in the literature. However, research in the use of different substrate materials such as silicon to achieve an ideal and full integration of photonic and electronic system... Read More about Optical properties of self-assembled InAs quantum dots based P–I–N structures grown on GaAs and Si substrates by Molecular Beam Epitaxy.

A novel approach for engineering efficient nanofluids by radiolysis (2022)
Journal Article
Maaza, M., Khamliche, T., Akbari, M., Kana, N., Tandjigora, N., Beukes, P., Genu, A., Kaviyarasu, K., Cloete, J. K., Lekala, M., Gibaud, A., & Henini, M. (2022). A novel approach for engineering efficient nanofluids by radiolysis. Scientific Reports, 12, Article 10767. https://doi.org/10.1038/s41598-022-14540-z

This contribution reports for the first time the possibility of using radiolysis to engineer stable efficient nanofluids which exhibit an enhanced thermal conductivity. The validation was confirmed on Ag-H2O and Ag-C2H6O2 nanofluids fabricated via g-... Read More about A novel approach for engineering efficient nanofluids by radiolysis.

Structural, Optical and Electrical Properties of Self-Assembled InAs Quantum Dots Based p–i–n Devices Grown on GaAs Substrate by Molecular Beam Epitaxy for Telecommunication Applications (2022)
Journal Article
Lemine, O. M., Al Huwayz, M., Ibnaouf, K. H., Alkaoud, A., Salhi, A., & Henini, M. (2022). Structural, Optical and Electrical Properties of Self-Assembled InAs Quantum Dots Based p–i–n Devices Grown on GaAs Substrate by Molecular Beam Epitaxy for Telecommunication Applications. Journal of Nanoelectronics and Optoelectronics, 17(5), 837-842. https://doi.org/10.1166/jno.2022.3258

This work aims to investigate the structural, electrical, and optical properties of InAs quantum dots (QDs) grown by Molecular Beam Epitaxy on GaAs substrates. As-made samples were thoroughly characterized using different techniques, including Atomic... Read More about Structural, Optical and Electrical Properties of Self-Assembled InAs Quantum Dots Based p–i–n Devices Grown on GaAs Substrate by Molecular Beam Epitaxy for Telecommunication Applications.

Schottky contact diameter effect on the electrical properties and interface states of Ti/Au/p-AlGaAs/GaAs/Au/Ni/Au Be-doped p-type MBE Schottky diodes (2022)
Journal Article
Lakhdari, I., Sengouga, N., Labed, M., Tibermacine, T., Mari, R., & Henini, M. (2022). Schottky contact diameter effect on the electrical properties and interface states of Ti/Au/p-AlGaAs/GaAs/Au/Ni/Au Be-doped p-type MBE Schottky diodes. Semiconductor Science and Technology, 37(5), Article 055022. https://doi.org/10.1088/1361-6641/ac612a

Schottky diodes based on Be-doped p-type AlGaAs were grown by molecular beam epitaxy (MBE) and their current-voltage (I-V) and capacitance-voltage (C-V) characteristics measured. The Schottky and Ohmic contacts are Ti/Au and Au/Ni/Au, respectively. T... Read More about Schottky contact diameter effect on the electrical properties and interface states of Ti/Au/p-AlGaAs/GaAs/Au/Ni/Au Be-doped p-type MBE Schottky diodes.

Mercury goes Solid at room temperature at nanoscale and a potential Hg waste storage (2022)
Journal Article
Kana, N., Morad, R., Akbari, M., Henini, M., Niemela, J., Hacque, F., Gibaud, A., & Maaza, M. (2022). Mercury goes Solid at room temperature at nanoscale and a potential Hg waste storage. Scientific Reports, 12(1), Article 3494. https://doi.org/10.1038/s41598-022-06857-6

While room temperature bulk mercury is liquid, it is solid in its nano-configuration (Ønano-Hg ≤ 2.5 nm). Conjugating the nano-scale size effect and the Laplace driven surface excess pressure, Hg nanoparticles of Ønano-Hg ≤ 2.4 nm embedded in a 2-D t... Read More about Mercury goes Solid at room temperature at nanoscale and a potential Hg waste storage.

From Khoi-San indigenous knowledge to bioengineered CeO2 nanocrystals to exceptional UV-blocking green nanocosmetics (2022)
Journal Article
Sintwa, N., Ditlopo, N., Khamlich, S., Manikandan, E., Gnanasekaran, K., Henini, M., Gibaud, A., Krief, A., & Maaza, M. (2022). From Khoi-San indigenous knowledge to bioengineered CeO2 nanocrystals to exceptional UV-blocking green nanocosmetics. Scientific Reports, 12(1), Article 3468. https://doi.org/10.1038/s41598-022-06828-x

Single phase CeO2 nanocrystals were bio-synthesized using Hoodia gordonii natural extract as an effective chelating agent. The nanocrystals with an average diameter of 〈Ø〉 ~ 5–26 nm with 4+ electronic valence of Ce displayed a remarkable UV selecti... Read More about From Khoi-San indigenous knowledge to bioengineered CeO2 nanocrystals to exceptional UV-blocking green nanocosmetics.