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Effect of erbium-doping concentration on the electrical, structural and morphological properties of heterostructures based on TiO2 thin films (2024)
Journal Article
Al Mashary, F. S., Oliveira Lima, J. P. D., Mondal, A., Mondal, S., Ghosh, A., Jameel, D. A., …Felix, J. F. (2024). Effect of erbium-doping concentration on the electrical, structural and morphological properties of heterostructures based on TiO2 thin films. Bulletin of Materials Science, 47(1), Article 42. https://doi.org/10.1007/s12034-023-03120-0

Effect of erbium (Er) doping on the electrical, structural and morphological properties of TiO2 thin films deposited by the combination of a simple sol–gel process and spin-coating technique on p-type silicon substrates, has been investigated. A syst... Read More about Effect of erbium-doping concentration on the electrical, structural and morphological properties of heterostructures based on TiO2 thin films.

Linear and nonlinear optical investigations of polyvinyl chloride modified La2O3 nanocomposite films (2024)
Journal Article
Alhassan, S., Alshammari, K., Alshammari, M., Alotaibi, T., Alshammari, A. H., Alhamazani, A., …Abdel Mohaymen Taha, T. (2024). Linear and nonlinear optical investigations of polyvinyl chloride modified La2O3 nanocomposite films. Results in Physics, 58, Article 107456. https://doi.org/10.1016/j.rinp.2024.107456

In the present work, we report the effect and improvement of PVC polymer blend nanocomposites performance with addition of lanthanum oxide (La2O3) nanofiller. The structural properties of the samples were studied using different characterization tech... Read More about Linear and nonlinear optical investigations of polyvinyl chloride modified La2O3 nanocomposite films.

Towards Room Temperature Thermochromic Coatings with controllable NIR-IR modulation for solar heat management & smart windows applications (2024)
Journal Article
Khanyile, B. S., Numan, N., Simo, A., Nkosi, M., Mtshali, C. B., Khumalo, Z., …Maaza, M. (2024). Towards Room Temperature Thermochromic Coatings with controllable NIR-IR modulation for solar heat management & smart windows applications. Scientific Reports, 14(1), Article 2818. https://doi.org/10.1038/s41598-024-52021-7

Solar heat management & green air-conditioning are among the major technologies that could mitigate heat islands phenomenon while minimizing significantly the CO2 global foot-print within the building & automotive sectors. Chromogenic materials in ge... Read More about Towards Room Temperature Thermochromic Coatings with controllable NIR-IR modulation for solar heat management & smart windows applications.

Processing of new efficient Cr1-xNaxO3 catalysts for sodium borohydride methanolysis (2023)
Journal Article
Alshammari, K., Alhassan, S., Alshammari, M., Alshammari, A. H., Alotaibi, T., Mohaymen Taha, T. A., & Henini, M. (2024). Processing of new efficient Cr1-xNaxO3 catalysts for sodium borohydride methanolysis. International Journal of Hydrogen Energy, 53, 698-705. https://doi.org/10.1016/j.ijhydene.2023.12.078

This study reports the development of a novel Cr1-xNaxO3 catalyst using a simple cost-effective method for hydrogen production from NaBH4 methanolysis. The properties of the nanocomposites were investigated by employing XRD, FTIR, SEM and XPS charact... Read More about Processing of new efficient Cr1-xNaxO3 catalysts for sodium borohydride methanolysis.

Hole diffusion effect on the minority trap detection and non-ideal behavior of NiO/β-Ga2O3 heterojunction (2023)
Journal Article
Labed, M., Alotaibi, S., Min, J. Y., Almalki, A., Henini, M., & Rim, Y. S. (2023). Hole diffusion effect on the minority trap detection and non-ideal behavior of NiO/β-Ga2O3 heterojunction. Applied Physics Letters, 123(25), Article 253504. https://doi.org/10.1063/5.0180427

A NiO/β-Ga2O3 heterojunction was fabricated by sputtering a highly p-doped NiO layer onto β-Ga2O3. This heterojunction showed a low leakage current and a high turn-on voltage (Von) compared to a Ni/β-Ga2O3 Schottky barrier diode. The extracted Von fr... Read More about Hole diffusion effect on the minority trap detection and non-ideal behavior of NiO/β-Ga2O3 heterojunction.

Effects of gamma radiation on the electrical properties of InAs/InGaAs quantum dot-based laser structures grown on GaAs and Si substrates by molecular beam epitaxy (2023)
Journal Article
Al Huwayz, M., Jameel, D., Azevedo, W. M., Felix, J. . F., Al Saqri, N., Lemine, O. M., …Henini, M. (2023). Effects of gamma radiation on the electrical properties of InAs/InGaAs quantum dot-based laser structures grown on GaAs and Si substrates by molecular beam epitaxy. Physical Chemistry Chemical Physics, 26(1), 445-454. https://doi.org/10.1039/d3cp03865c

This study investigates the impact of gamma radiation on the electrical properties of InAs/InGaAs quantum dot-based laser structures grown on both GaAs (Sample A) and Si (Sample B) substrates using molecular beam epitaxy. The research explores the el... Read More about Effects of gamma radiation on the electrical properties of InAs/InGaAs quantum dot-based laser structures grown on GaAs and Si substrates by molecular beam epitaxy.

CuO–TiO2 based self-powered broad band photodetector (2023)
Journal Article
Ghosh, C., Dey, A., Biswas, I., Gupta, R. K., Yadav, V. S., Yadav, A., …Mondal, A. (2023). CuO–TiO2 based self-powered broad band photodetector. Nano Materials Science, https://doi.org/10.1016/j.nanoms.2023.11.003

An efficient room-temperature self-powered, broadband (300 ​nm–1100 nm) photodetector based on a CuO–TiO2/TiO2/p-Si(100) heterostructure is demonstrated. The CuO–TiO2 nanocomposites were grown in a two-zone horizontal tube furnace... Read More about CuO–TiO2 based self-powered broad band photodetector.

Towards Unlocking/Tuning the Mott Transition Temperature in Alkaline-Doped Vanadium Oxide Thermochromic Coatings and Potential Green Air-Conditioning via Room Temperature VxOy-V-VxOy Layered Coatings (2023)
Journal Article
Khanyile, S., Numan, N., Simo, A., Nkosi, M., Mtshali, C. B., Khumalo, Z., …Maaza, M. (2023). Towards Unlocking/Tuning the Mott Transition Temperature in Alkaline-Doped Vanadium Oxide Thermochromic Coatings and Potential Green Air-Conditioning via Room Temperature VxOy-V-VxOy Layered Coatings. Nano-Horizons: Journal of Nanosciences and Nanotechnologies, 2, 1-26. https://doi.org/10.25159/3005-2602/13618

In this contribution, we validate for the first time that the near infrared-infrared (NIR-IR) modulation of the optical transmission (DTTRANS = T(TTMIT)) of vanadium oxide-based nanomaterials can be controlled or tuned via a genuine approach with a s... Read More about Towards Unlocking/Tuning the Mott Transition Temperature in Alkaline-Doped Vanadium Oxide Thermochromic Coatings and Potential Green Air-Conditioning via Room Temperature VxOy-V-VxOy Layered Coatings.

Room temperature bio-engineered multifunctional carbonates for CO2 sequestration and valorization (2023)
Journal Article
Mohamed, H., Hkiri, K., Botha, N., Cloete, K., Azizi, S., Ahmed, A. A. Q., …Maaza, M. (in press). Room temperature bio-engineered multifunctional carbonates for CO2 sequestration and valorization. Scientific Reports, 13(1), Article 16783. https://doi.org/10.1038/s41598-023-42905-5

This contribution reports, for the first time, on an entirely green bio-engineering approach for the biosynthesis of single phase crystalline 1-D nano-scaled calcite CaCO3. This was validated using H2O as the universal solvent and natural extract of... Read More about Room temperature bio-engineered multifunctional carbonates for CO2 sequestration and valorization.

Investigation on ammonia-free scalable cobalt-doped hexagonal boron nitride for environmental remediation (2023)
Journal Article
Annie Vinsla, J. V., Vinosha, P. A., Vijayalakshmi, S., Xavier, B., Muthukrishnaraj, A., Ayyar, M., & Henini, M. (2023). Investigation on ammonia-free scalable cobalt-doped hexagonal boron nitride for environmental remediation. Journal of Materials Science: Materials in Electronics, 34(27), Article 1844. https://doi.org/10.1007/s10854-023-11255-3

Hexagonal boron nitride (h-BN) nanocrystals are of greater importance for wastewater remediation, and synthesizing these h-BN nanocrystals with high surface area adds significance. Hence a facile and economically viable hydrothermal technique was ado... Read More about Investigation on ammonia-free scalable cobalt-doped hexagonal boron nitride for environmental remediation.

Heating efficiency of Gd- and Co-doped γ-Fe2O3 nanoparticles measured by AC magnetometer for magnetic-mediated hyperthermia (2023)
Journal Article
Lemine, O., El-Boubbou, K., Orue, I., Ángel García, J., Elansary, M., Ali, R., …Henini, M. (2023). Heating efficiency of Gd- and Co-doped γ-Fe2O3 nanoparticles measured by AC magnetometer for magnetic-mediated hyperthermia. Journal of Magnetism and Magnetic Materials, 587, Article 171279. https://doi.org/10.1016/j.jmmm.2023.171279

Most research groups, including us, utilize calorimetric methods to determine the heat dissipation by magnetic nanoparticles (MNPs) under an alternating magnetic field (AMF). Herein, we report the heating efficiencies of γ-Fe2O3 and doped γ-Fe2O3 NPs... Read More about Heating efficiency of Gd- and Co-doped γ-Fe2O3 nanoparticles measured by AC magnetometer for magnetic-mediated hyperthermia.

Structural, optical and photovoltaic properties of V2O5/ZnO and reduced graphene oxide (rGO)-V2O5/ZnO nanocomposite photoanodes for dye-sensitized solar cells (2023)
Journal Article
Lakshmi, C. B., Venus, S. A., Velanganni, S., Muthukrishnaraj, A., Ayyar, M., & Henini, M. (2023). Structural, optical and photovoltaic properties of V2O5/ZnO and reduced graphene oxide (rGO)-V2O5/ZnO nanocomposite photoanodes for dye-sensitized solar cells. Carbon Letters, https://doi.org/10.1007/s42823-023-00608-x

Photoanode optimization is a fascinating technique for enlightening the power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs). In this present study, V2O5/ZnO and reduced graphene oxide (rGO)-V2O5/ZnO nanocomposites (NCs) were prepa... Read More about Structural, optical and photovoltaic properties of V2O5/ZnO and reduced graphene oxide (rGO)-V2O5/ZnO nanocomposite photoanodes for dye-sensitized solar cells.

Uncooled mid-wavelength InAsSb/AlAsSb heterojunction photodetectors (2023)
Journal Article
Kim, Y., Alotaibi, S., Henini, M., Chun, B. S., & Lee, S. J. (2023). Uncooled mid-wavelength InAsSb/AlAsSb heterojunction photodetectors. APL Materials, 11(8), Article 081104. https://doi.org/10.1063/5.0157112

A mid-wavelength p–B–i–n infrared photodetector constituting ternary alloys of an InAs0.9Sb0.1 absorber and an AlAs0.05Sb0.95 electron barrier was demonstrated to operate at room temperature. The results of high-resolution x-ray diffraction (XRD) ana... Read More about Uncooled mid-wavelength InAsSb/AlAsSb heterojunction photodetectors.

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., …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.

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.

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., …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.

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.

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.

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., …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.

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., …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.