All Outputs (9)

Investigation of electrically active defects in InGaAs quantum wire intermediate-band solar cells using deep-level transient spectroscopy (DLTS) technique (2016)
Journal Article
Al Saqri, N. A., Felix, J. F., Aziz, M., Kunets, V. P., Jameel, D. A., Taylor, D., …Salamo, G. (in press). Investigation of electrically active defects in InGaAs quantum wire intermediate-band solar cells using deep-level transient spectroscopy (DLTS) technique. Nanotechnology, 28(4), https://doi.org/10.1088/1361-6528/28/4/045707

InGaAs quantum wire (QWr) intermediate-band solar cell based nanostructures grown by molecular beam epitaxy are studied. The electrical and interface properties of these solar cell devices, as determined by current–voltage (I–V) and capacitance–volta... Read More about Investigation of electrically active defects in InGaAs quantum wire intermediate-band solar cells using deep-level transient spectroscopy (DLTS) technique.

Photodegradation of organic pollutants RhB dye using UV simulated sunlight on ceria based TiO2 nanomaterials for antibacterial applications (2016)
Journal Article
Kasinathan, K., Kennedy, J., Elayaperumal, M., Henini, M., & Malik, M. (2016). Photodegradation of organic pollutants RhB dye using UV simulated sunlight on ceria based TiO2 nanomaterials for antibacterial applications. Scientific Reports, 6(38064), https://doi.org/10.1038/srep38064

To photo-catalytically degrade RhB dye using solar irradiation, CeO2 doped TiO2 nanocomposites were synthesized hydrothermally at 700 °C for 9 hrs. All emission spectra showed a prominent band centered at 442 nm that was attributed to oxygen related... Read More about Photodegradation of organic pollutants RhB dye using UV simulated sunlight on ceria based TiO2 nanomaterials for antibacterial applications.

Negative activation energy and dielectric signatures of excitons and excitonic Mott transitions in quantum confined laser structures (2016)
Journal Article
Bhunia, A., Bansal, K., Henini, M., Alshammari, M., & Datta, S. (in press). Negative activation energy and dielectric signatures of excitons and excitonic Mott transitions in quantum confined laser structures. Journal of Applied Physics, 120, Article 144304. https://doi.org/10.1063/1.4964850

Mostly, optical spectroscopies are used to investigate the physics of excitons, whereas their electrical evidences are hardly explored. Here, we examined a forward bias activated differential capacitance response of GaInP/AlGaInP based multi-quantum... Read More about Negative activation energy and dielectric signatures of excitons and excitonic Mott transitions in quantum confined laser structures.

Surface effects of vapour-liquid-solid driven Bi surface droplets formed during molecular-beam-epitaxy of GaAsBi (2016)
Journal Article
Steele, J., Lewis, R., Horvat, J., Nancarrow, M., Henini, M., Fan, D., …Salamo, G. (in press). Surface effects of vapour-liquid-solid driven Bi surface droplets formed during molecular-beam-epitaxy of GaAsBi. Scientific Reports, 6(28860), https://doi.org/10.1038/srep28860

Herein we investigate a (001)-oriented GaAs1−xBix/GaAs structure possessing Bi surface droplets capable of catalysing the formation of nanostructures during Bi-rich growth, through the vapourliquid-solid mechanism. Specifically, self-aligned “nanotra... Read More about Surface effects of vapour-liquid-solid driven Bi surface droplets formed during molecular-beam-epitaxy of GaAsBi.

Electrical performance of conducting polymer (SPAN) grown on GaAs with different substrate orientations (2016)
Journal Article
Jameel, D., Aziz, M., Felix, J., Al Saqri, N., Taylor, D., Albalawi, H., …Henini, M. (2016). Electrical performance of conducting polymer (SPAN) grown on GaAs with different substrate orientations. Applied Surface Science, 387, 228-236. https://doi.org/10.1016/j.apsusc.2016.06.097

This article reports the effect of n-type GaAs substrate orientation, namely (100), (311)A and (311)B, on the electrical properties of sulfonated polyaniline (SPAN)/GaAs heterojunction devices. In addition, the inhomogeneity of the interface between... Read More about Electrical performance of conducting polymer (SPAN) grown on GaAs with different substrate orientations.

Effect of Co-60 gamma-ray irradiation on electrical properties of Ti/Au/GaAs1-xNx Schottky diodes (2016)
Journal Article
Teffahi, A., Hamri, D., Mostefa, A., Saidane, A., Al Saqri, N., Felix, J., & Henini, M. (in press). Effect of Co-60 gamma-ray irradiation on electrical properties of Ti/Au/GaAs1-xNx Schottky diodes. Current Applied Physics, 16(8), https://doi.org/10.1016/j.cap.2016.05.003

Current-voltage (I-V), capacitance-voltage-frequency (C-V-f) and conductance-voltage-frequency (G/?-V-f) measurements at room temperature are used to study 50 kGy 60Co ?-ray electrical properties irradiation dependence of Ti/Au/GaAs1?xNx Schottky dio... Read More about Effect of Co-60 gamma-ray irradiation on electrical properties of Ti/Au/GaAs1-xNx Schottky diodes.

Hole spin injection from a GaMnAs layer into GaAs-AlAs-InGaAs resonant tunneling diodes (2016)
Journal Article
Rodrigues, D., Brasil, M., Orlita, M., Kunc, J., Galeti, H., Henini, M., …H.V.A., Y. (2016). Hole spin injection from a GaMnAs layer into GaAs-AlAs-InGaAs resonant tunneling diodes. Journal of Physics D: Applied Physics, 49(16), https://doi.org/10.1088/0022-3727/49/16/165104

We have investigated the polarization-resolved electroluminescence (EL) of a p–i–n GaAs/AlAs/InGaAs resonant tunneling diode (RTD) containing a GaMnAs (x  =  5%) spin injector under high magnetic fields. We demonstrate that under hole resonant tunnel... Read More about Hole spin injection from a GaMnAs layer into GaAs-AlAs-InGaAs resonant tunneling diodes.

Surface-enhanced Raman spectroscopy study of 4-ATP on gold nanoparticles for basal cell carcinoma fingerprint detection (2016)
Journal Article
Quynh, L. M., Nam, N. H., Kong, K., Nhung, N. T., Notingher, I., Henini, M., & Luong, N. H. (2016). Surface-enhanced Raman spectroscopy study of 4-ATP on gold nanoparticles for basal cell carcinoma fingerprint detection. Journal of Electronic Materials, 45(5), 2563-2568. https://doi.org/10.1007/s11664-016-4421-9

The surface-enhanced Raman signals of 4-aminothiophenol (4-ATP) attached to the surface of colloidal gold nanoparticles with size distribution of 2 to 5 nm were used as a labeling agent to detect basal cell carcinoma (BCC) of the skin. The enhanced R... Read More about Surface-enhanced Raman spectroscopy study of 4-ATP on gold nanoparticles for basal cell carcinoma fingerprint detection.

Modeling the effect of 1 MeV electron irradiation on the performance of n(+)-p-p(+) silicon space solar cells (2016)
Journal Article
Hamache, A., Sengouga, N., Meftah, A., & Henini, M. (2016). Modeling the effect of 1 MeV electron irradiation on the performance of n(+)-p-p(+) silicon space solar cells. Radiation Physics and Chemistry, 123, https://doi.org/10.1016/j.radphyschem.2016.02.025

Energetic particles such as electrons and protons induce severe degradation on the performance of solar cells used to power satellites and space vehicles. This degradation is usually attributed to lattice damage in the active region of the solar cell... Read More about Modeling the effect of 1 MeV electron irradiation on the performance of n(+)-p-p(+) silicon space solar cells.