Dr. Machaba Letswalo

Overview

Field of Specialisation: Material Science Research interests Dr. Letswalo Machaba Leanyatsa Abraham is an accomplished Experimental Condensed Matter Physicist and serves as the Deputy Head of Department for Teaching and Learning in the Physics Department. His research is primarily focused on the development and application of luminescent materials, including rare earth-doped inorganic phosphors, ZnO, fluoride, organic phosphors, and perovskites. He has extensive experience in these materials for applications such as optoelectronics, displays, phototherapy, solar cells, water purification through photocatalytic methods, and super-capacitance anode lithium battery storage. He is also dedicated to supervising doctoral and master's students working on cutting-edge research in luminescent nanomaterials, which are employed in a wide range of technologies from solar cells to solid-state lighting, phototherapy, and more. Teaching Physics: Building Science 1 Analytical Chemistry 1, 2 & 4 Recent Publications 1. Investigation of red‐emitting CaMoO 4 : Eu 3+ phosphor by partitioning of substitutional PO 4 3− ions via solid‐state reaction method MLA Letswalo , L Reddy, A Balakrishna, HC Swart, OM Ntwaeaborwa Luminescence 39 (9), e4905 2. Multi-colour emission from ZnO [SO 4 ]: Eu 2+ nanophosphors: Effects of SO 4 2- and Eu 2+ doping concentration MLA Letswalo , L Reddy, A Balakrishna, MA Mamo, RM Erasmus, ... Materials Today Communications 38, 107944 3. Synthesis and investigation of energy transfer mechanism in Sm 3+ and Eu 3+ doped Na 6 Mg(SO 4 ) 4 nanophosphors via solution combustion technique KB Morebodi, L Reddy, MLA Letswalo , A Balakrishna, LJB Erasmus, ... Inorganic and Nano-Metal Chemistry, 1-12 4. Integrity vs. Quality of Assessments: Are They Compromised on the Online Platform?. L Reddy, ML Letswalo , AP Sefage, BV Kheswa, A Balakrishna, ... Pedagogical Research 7 (2) 5. The role of sulfate ions on distinctive defect emissions in ZnO: Ce 3+ nanophosphors-A study on the application in color display systems MLA Letswalo , L Reddy, A Balakrishna, HC Swart, OM Ntwaeaborwa Journal of Luminescence 240, 118462 6. Influence of SO 4 2− anionic group substitution on the enhanced photoluminescence behaviour of red emitting CaMoO 4 : Eu 3+ phosphor MLA Letswalo , L Reddy, A Balakrishna, HC Swart, OM Ntwaeaborwa Journal of Alloys and Compounds 854, 157022 7. Effect of BO 3 3− ions on photoluminescence of CaMoO 4 : Eu 3+ phosphor MLA Letswalo , L Reddy, A Balakrishna, HC Swart, OM Ntwaeaborwa Journal of Vacuum Science & Technology B 37 (1) Publication Links: Google Scholar ORCID Scopus h Index Research Gate