Department of Physics

Dr PS Mbule

College of Science, Engineering and Technology
School of Science
Department: Physics
Post-Doctoral Research Fellow
Tel: 011 670 9319
Fax: 011 670 9319
E-mail: mbuleps1@unisa.ac.za

Qualifications

  • PhD in Physics (University of the Free State, South Africa, 2013)

Fields of academic interests

  • Synthesis of metal doped-oxide materials (e.g. M:ZnO) for solar cells application by combustion, sol-gel, co-precipitation and sol-gel microwave-assisted methods.
  • Thin film deposition process by RF/DC Magnetron Sputtering; spin coating, PVD and electro deposition methods/techniques.
  • Characterizations performed using UV-VIS, FTIR, Raman, AFM/STM, SmartLab XRD, XPS, FESEM/EDS, Ellipsometer and Photoluminescence (PL) (Tunable laser).  
  • Fabrication and testing of Organic solar cells (Photovoltaic characteristics and electrical measurements)

Field of Specialisation

  • Nano-Science and Nano-technology
  • Materials Sciences
  • Condensed Matter Physics
  • Nanomaterials for renewable energy
  • Organic solar cells

Journal articles

Peer reviewed papers: (8)

Book Chapter              : (1)

 

JOURNAL ARTICLES

2017 (1 article)

** G.L. Kabongo, G.H. Mhlongo, B.M. Mothudi , K.T. Hillie ,P.S. Mbule ,M.S. Dhlamini, Structural, Photoluminescence and XPS properties of Tm3+ ions in ZnO nanostructures, Journal of Luminescence 187 (2017)141-153

2016 (2 articles + 1 book chapter)

** P.S.Mbule, O.M.Ntwaeaborwa, B.M.Mothudi, and M.S.Dhlamini, Structural and Optical characterization of nanoparticulate manganese doped zinc silicate phosphors prepared by sol-gel and combustion methods, Journal of Luminescence, 179 (2016) 74-82

** Guy L. Kabongo, Pontsho S. Mbule, Gugu H. Mhlongo, Bakang M. Mothudi, Kenneth T. Hillie,

and Mokhotjwa S. Dhlamini, Photoluminescence Quenching and Enhanced Optical Conductivity of P3HT Derived Ho3+-Doped ZnO Nanostructures, Nanoscale Research Letters (2016) 1-11

** Book chapter: Luyanda L. Noto, Hendrik C. Swart, Bakang M. Mothudi, Pontsho S. Mbule and Mokhotjwa S. Dhlamini, Luminescence - An Outlook on the Phenomena and their Applications, Edited by Jagannathan Thirumalai, pages: 13-32, INTECH publication 2016. ISBN: 978-953-51-2763-5  

2015 (1 article)

** Hendrik C Swart, Odireleng M Ntwaeaborwa, Pontsho S Mbule, Mokhotjwa S Dhlamini and Bakang B Mothudi, P3HT:PCBM based solar cells: A short review focusing on ZnO nanoparticles buffer layer, post-fabrication annealing and an Inverted geometry, Journal of Materials Science and Engineering B, 5(1-2) 12-35

 2014 (1 article)

 ** Pontsho S Mbule, Hendrik C Swart, Odireleng M Ntwaeaborwa, Effects of thermal treatment and depth    profiling analysis of solution processed bulk-heterojunction organic photovoltaics cells, Journal of Colloid and Interface Science, 436 (2014) 9-15

 2013 (2 articles)

 ** P.S. Mbule, T.-H. Kim, B.-S. Kim, H.C. Swart and O.M. Ntwaeaborwa, Effects of particle morphology of   ZnO buffer layer on the performance of organic solar cell devices, Solar energy Materials and Solar Cells, 112 (2013) 6-12

** P.S. Mbule, T.-H. Kim, B.-S. Kim, H.C. Swart and O.M. Ntwaeaborwa, Effects of ZnO Buffer Layer and Depth Profiling analysis of Bulk Heterojunction Organic Solar Cells, NSTI-Nanotech 2013 (2013) 113-11

2012 (1 article)

P.S. Mbule, G.H. Mhlongo, S.S. Pitale, H.C. Swart and O.M. Ntwaeaborwa, Sensitizing effects of ZnO quantum dots Red-emitting Pr3+ doped SiO2 phosphor, Physica B 407 (2012) 1607-1610

Projects

  • Transparent conductive oxides (TCOs) for application in organic solar cells
  • Hybrid heterostructures based on Poly(3-Hexylthiophene-2,5-Diyl) (P3HT) solar cells
  • Time-resolved photoluminescence (TRPL) of metal doped oxides
  • The structural, electronic, and charge carrier transport properties of metals doped-ZnO thin films
  • Surface technologies, thin film technology, Sputtering and PVD deposition