Browsing Research Publications/Outputs by Subject "ZnO"

Now showing items 1-12 of 12

Defect-induced room temperature ferromagnetic properties of the Al-doped and undoped ZnO rod-like nanostructure

Author: Jule, L ; Dejene, F ; Ali, AG ; Roro, Kittessa T ; Mwakikunga, Bonex W Date: Jul 2017 In this work, electron paramagnetic resonance (EPR) experiment on undoped ZnO and Al doped ZnO (AZO) nanoparticles prepared by facile sol–gel method were investigated. The effects of the Al concentration on room temperature ferromagnetic (FM) ... Read more
Effect of additional electron acceptor in hybrid P3HT:PCBM:ZnO spin-coated films for photovoltaic application

Author: Muller, T ; Ramashia, TA ; Motaung, David E ; Cummings, F ; Malgas, G ; Oliphant, C ; Arendse, C Date: Apr 2016 Concerted efforts need to be undertaken to overcome limited efficiencies and instability issues in order to ensure a niche for organic photovoltaics (OPVs) in the PV market. Recent improvements on tandem structures aside, in order to achieve ... Read more
The effect of Co and In combinational or individual doping on the structural, optical and selective sensing properties of ZnO nanoparticles

Author: Maswanganye, MW ; Rammutla, KE ; Mosuanga, TE ; Mwakikunga, Bonex W Date: Aug 2017 Variably doped ZnO samples by the sol-gel process have been tested for response to humidity and industrial gases of CO, CH(sub4), NH(sub3) and H9sub2). The elements of Cobalt (Co) and Indium (In) either singly doped or co-doped at 5 wt% and ... Read more
Enhanced exciton emission from ZnO nano-phosphor induced by Yb3+ ions

Author: Kabongo, GL ; Mhlongo, Gugu H ; Mothudi, BM ; Hillie, KT ; Swart, HC ; Dhlamini, MS Date: 2014 In this work, the sol–gel method was used to prepare Ytterbium (Yb(sup3+)) doped ZnO nano-phosphors with different concentrations of Yb(sup3+) ions. Their structural, morphological, photoluminescence, electronic states and the chemical ... Read more
Fabrication of hybrid solar cells using poly(2,5-dimethoxyaniline) hexagonal structures and zinc oxide nanorods

Author: Mavundla, SE ; Malgas, GF ; Motaung, DE ; Iwuoha, EI Date: Apr 2012 Flower-shaped zinc oxide (ZnO) structures have been synthesized in a microwave at 180 C for 20 minutes using zinc nitrate and KOH. Detailed structural and morphology observation showed that the micron-sized ZnO nano-pencils grow out of the ... Read more
Induced ferromagnetic and gas sensing properties in ZnO-nanostructures by altering defect concentration of oxygen and zinc vacancies

Author: Motaung, DE ; Makgwane, Peter R ; Ray, SS Date: Jan 2015 We report on the effect of the synthesis reaction-time on the structural, optical, magnetic and sensing properties of ZnO-nanostructures. Electron paramagnetic resonance and photoluminescence analyses reveal that singly ionized oxygen vacancies ... Read more
Metal oxide nanostructures-containing organic polymer hybrid solarcells: Optimization of processing parameters on cell performance

Author: Motaung, DE ; Makgwane, Peter R ; Ray, SS Date: Jul 2015 We report the chemical synthesis of various ZnO nanostructures and TiO2 nanoparticles and their dispersion in a P3HT matrix. The photoluminescence studies revealed improved charge transport in the active layer of the optimized TiO2 nanoparticles ... Read more
Microstructure and thermoelectric properties of Al-doped ZnO ceramic prepared by spark plasma sintering

Author: Radingoana, Precious M ; Guillemet-Fritsch, S ; Noudem, J ; Olubambi, PA ; Chevallier, G ; Estourn, C Date: Oct 2022 The high thermal and low electrical conductivities of ZnO ceramics have hindered their thermoelectric applications. The doping of ZnO with group 3 elements can enhance the thermoelectric properties. In this work, Al (2 at%) doped ZnO powder ... Read more
A review on ZnO nanostructured materials: Energy, environmental and biological applications

Author: Theerthagiri, J ; Salla, S ; Senthil, RA ; Palaniyandy, Nithyadharseni ; Madankumar, A ; Arunachalam, P ; Maiyalagan, T ; Kim, H Date: Jul 2019 Zinc oxide (ZnO) is an adaptable material that has distinctive properties, such as high-sensitivity, large specific area, non-toxicity, good compatibility and a high isoelectric point, which favours it to be considered with a few exceptions. ... Read more
Room temperature ferromagnetism and gas sensing in ZnOnanostructures: Influence of intrinsic defects and Mn, Co, Cu doping

Author: Mhlongo, Gugu H ; Shingange, Katekani ; Tshabalala, Zamaswazi P ; Dhonge, Baban, P ; Mahmoud, FA ; Mwakikunga, Bonex W ; Motaung, David E Date: Dec 2016 Undoped and transition metal (Cu, Co and Mn) doped ZnO nanostructures were successfully prepared via a microwave-assisted hydrothermal method followed by annealing at 500 °C. Numerous characterization facilities such as X-ray powder diffraction ... Read more
Shape-selective dependence of room temperature ferromagnetism induced by hierarchical ZnO nanostructures

Author: Motaung, DE ; Mhlongo, Gugu H ; Nkosi, SS ; Malgas, GF ; Mwakikunga, Bonex W ; Coetsee, E ; Swart, HC ; Abdallah, HMI ; Moyo, T ; Ray, SS Date: May 2014 We report on the room temperature ferromagnetism of various highly crystalline zinc oxide (ZnO) nanostructures, such as hexagonally shaped nanorods, nanocups, nanosamoosas, nanoplatelets, and hierarchical nano “flower-like” structures. These ... Read more
Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing

Author: Motaung, DE ; Mhlongo, Gugu H ; Kortidis, I ; Nkosi, SS ; Malgas, GF ; Mwakikunga, Bonex W ; Ray, Suprakas S ; Kiriakidis, G Date: Aug 2013 We report on the synthesis of ZnO films by aerosol spray pyrolysis method at different deposition times.The surface morphology, crystal structure and the cross-sectional analysis of the prepared ZnO filmswere characterized by X-ray diffraction ... Read more

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Browsing Research Publications/Outputs by Subject "ZnO"

Browsing Research Publications/Outputs by Subject "ZnO"

Browse

All of ResearchSpace

This Community

Quick Links

Legislation and compliance

General Enquiries

Social Connect