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Browsing Physics by Author "Tunhuma, Shandirai Malven"
Now showing items 1-15 of 15
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Gora, Valentine Elifas; Auret, Francois Danie; Danga, Helga Tariro; Tunhuma, Shandirai Malven; Nyamhere, Cloud; Igumbor, Emmanuel; Chawanda, Albert (Elsevier, 2019-08)Please read abstract in the article.
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Gora, V.E.; Chawanda, A.; Nyamhere, C.; Auret, Francois Danie; Mazunga, F.; Jaure, T.; Chibaya, B.; Omotoso, Ezekiel; Danga, Helga Tariro; Tunhuma, Shandirai Malven (Elsevier, 2018-04)We have investigated the current-voltage (I-V) characteristics of nickel (Ni), cobalt (Co), tungsten (W) and palladium (Pd) Schottky contacts on n-type 4H-SiC in the 300–800 K temperature range. Results extracted from I-V ...
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Tunhuma, Shandirai Malven; Diale, M. (Mmantsae Moche); Nel, Jacqueline Margot; Madito, M.J. (Moshawe); Hlatshwayo, Thulani Thokozani; Auret, Francois Danie (Elsevier, 2019-12)Please read abstract in the article.
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Tunhuma, Shandirai Malven; Diale, M. (Mmantsae Moche); Legodi, Matshisa Johannes; Nel, Jacqueline Margot; Thabethe, Thabsile Theodora; Auret, Francois Danie (American Institute of Physics Inc., 2018-01-18)Defects introduced by the solid state reactions between tungsten and silicon carbide have been studied using deep level transient spectroscopy (DLTS) and Laplace DLTS. W/4H-SiC Schottky barrier diodes were isochronally ...
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Tunhuma, Shandirai Malven; Auret, Francois Danie; Legodi, Matshisa Johannes; Diale, M. (Mmantsae Moche) (Elsevier, 2016-01)In this study, the current–voltage (I–V) and capacitance–voltage (C–V) characteristics of Au/n-GaAs Schottky diodes have been measured over a wide temperature range, 80–480 K. The diodes were rectifying throughout the range ...
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Omotoso, Ezekiel; Meyer, Walter Ernst; Janse van Rensburg, Pieter Johan; Igumbor, Emmanuel; Tunhuma, Shandirai Malven; Ngoepe, Phuti Ngako Mahloka; Danga, Helga Tariro; Auret, Francois Danie (Elsevier, 2017-10)Please read abstract in the article.
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Tunhuma, Shandirai Malven; Auret, Francois Danie; Nel, Jacqueline Margot; Omotoso, Ezekiel; Danga, Helga Tariro; Igumbor, Emmanuel; Diale, M. (Mmantsae Moche) (Elsevier, 2017-10)We have used deep level transient spectroscopy (DLTS) and Laplace DLTS (L-DLTS) to characterize the electrically active point defects introduced in n-type gallium arsenide by electron beam exposure prior to Schottky ...
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Tunhuma, Shandirai Malven; Auret, Francois Danie; Legodi, Matshisa Johannes; Diale, M. (Mmantsae Moche) (Elsevier, 2018-07)We have studied the defects introduced in n-type 4H-SiC during sputter deposition of tungsten using deep-level transient spectroscopy (DLTS). Current-voltage and capacitance-voltage measurements showed a deterioration of ...
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Tunhuma, Shandirai Malven (University of Pretoria, 2016)Gallium arsenide (GaAs) technology leads the implementation of high frequency devices with superior performance. A vast number of optoelectronic applications are based on the material owing to its direct and wide bandgap. ...
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Tunhuma, Shandirai Malven (University of Pretoria, 2019)Silicon carbide has become an important material in the implementation of next generation photonics. It harbors the silicon vacancy (VSi) which can be transformed to a carbon antisite-vacancy pair (CSiVC) defect through ...
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Tunhuma, Shandirai Malven; Auret, Francois Danie; Legodi, Matshisa Johannes; Diale, M. (Mmantsae Moche) (American Institute of Physics, 2016)Defects induced by electron irradiation in n-GaAs have been studied using deep level transient spectroscopy (DLTS) and Laplace DLTS (L-DLTS). The E0.83 (EL2) is the only defect observed prior to irradiation. Ru/n-GaAs ...
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Tunhuma, Shandirai Malven; Auret, Francois Danie; Danga, Helga Tariro; Nel, Jacqueline Margot; Diale, M. (Mmantsae Moche) (Springer, 2019-06)Please read abstract in the article.
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Igumbor, Emmanuel; Omotoso, Ezekiel; Danga, Helga Tariro; Tunhuma, Shandirai Malven; Meyer, Walter Ernst (Elsevier, 2017-10)Please read abstract in the article.
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Igumbor, Emmanuel; Omotoso, Ezekiel; Tunhuma, Shandirai Malven; Danga, Helga Tariro; Meyer, Walter Ernst (Elsevier, 2017-10)Please read abstract in the article.
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Danga, Helga Tariro; Tunhuma, Shandirai Malven; Gora, V.E.; Jena, J.F.; Chawanda, A. (American Institute of Physics, 2019)This paper reports on the state of women in physics in Zimbabwe since 2002. Three universities have physics departments: the University of Zimbabwe, National University of Science and Technology, and Midlands State ...
Now showing items 1-15 of 15