Publications : Prof. OM Ntwaeaborwa

1.      OM Ntwaeaborwa, ND Kgwadi, SH Taole, R Strydom, Measurement of the Equilibrium Factor between Radon and its Progeny in the Underground Mining Environment, Health Physics  84 (4) (2004) 374 -377

2.      OM  Ntwaeaborwa, KT  Hillie, HC  swart, Degradation of Y₂O₃:Eu powders, Phys. Stat.  Sol. C 1 (9) (2004) 2366-2371

3.      KT  Hillie, OM  Ntwaeaborwa, HC  Swart, Degradation of pulsed laser

deposited Y₂O₃:Eu thin film phosphors, Phys. Stat.  Sol. C 1 (9) (2004) 2360 – 2365

4.      OM Ntwaeaborwa, PH Holloway, Enhanced photoluminescence of Ce³⁺ induced by an energy transfer from ZnO nanoparticles encapsulated in SiO₂, Nanotechnology  16 (6)(2005) 865 – 868

5.      OM Ntwaeaborwa, HC Swart, RE Kroon, PH Holloway, JR Botha, Photoluminescence of cerium-europium doubly activated SiO₂ phosphors prepared by sol-gel method, Surf. Interface. Anal.  38(4) (2006) 458-461

6.      OM Ntwaeaborwa, Swart H.C., Kroon R.E., Holloway P.H. and Botha J.R, Enhanced luminescence and degradation of SiO₂:Ce,Tb powder phosphors prepared by a sol-gel process, J. Phys. Chem. Sol. 67 (8) (2006) 1749-1753

7.      E Coetsee, HC Swart, JJ Terblans, OM Ntwaeaborwa, KT Hillie, WA Jordaan and U Butner, Characterization of Y₂SiO₅:Ce thin films, Optical Materials, 29(11)(2007) 1338-1343

8.      MS Dhlamini, JJ Terblans, OM Ntwaeaborwa and HC Swart, Synthesis and degradation of the PbS nanoparticle phosphors embedded in SiO₂, (SiO₂:PbS), Surface Review and Letters, 14 (4) (2007) 697-701

9.      HC Swart, JJ Terblans, E Coetsee, OM Ntwaeaborwa, MS Dhlamini and PH Holloway, A Short review on the ESSCR mechanism for phosphor degradation, J. Vac. Sci Technol. A 25 (4) (2007) 917-921

10.  OM Ntwaeaborwa, HC Swart, RE Kroon and PH Holloway, Cathodoluminescence Degradation of SiO₂:Ce,Tb powder phosphor prepared by a sol-gel process, J. Vac. Sci Technol. A 25 (4) (2007) 1152-1155.

11.  OM Ntwaeaborwa, HC Swart, RE Kroon, JM Ngaruiya, JR Botha, PH Holloway, Enhanced Photoluminescence of rare-earth activators in sol-gel derived SiO₂ by energy transfer ZnO nanoparticles and co-activators, Chapter 11 in Photoluminescence Research Progress, Edited by HK Wrights and GV Edwards,  Nova Science Publishers ISBN: 987-1-60456-538-6, (2008) 287-306

12.  OM Ntwaeaborwa, M.S. Dhlamini, J.R. Botha and H.C. Swart, Charaterization of sol-gel SiO₂:Ce,Tb powder and pulsed laser deposited thin film phosphor, Phys. Stat.  Sol. C, 5(2) (2008), 602 – 605.

13.  MS Dhlamini, JJ Terblans, OM Ntwaeaborwa, HD Joubert and H.C. Swart, Preparations and luminescent properties of PbS nanoparticle phosphors incorporated in a SiO₂ matrix – Phys. Stat.  Sol. C, 5(2) (2008), 598-601

14.  JJ  Dolo, JJ  Terblans, BF  Dejene, E  Coetsee, OM  Ntwaeaborwa and HC  Swart, Degradation of commercial Gd₂O₂S:Tb phosphor, Phys. Stat.  Sol. C, 5(2) (2008) 595-597.

15.  JM Ngaruiya, S  Niewoudt, JJ Terblans, OM Ntwaeaborwa, HC  Swart, Resolution of Eu²⁺ assymetrical emission peaks of SrAl₂O₄:Eu²⁺,Dy³⁺ phosphor by cathodoluminescence measurements, Materials Letters, 62 (2008) 3192-3194

16.  MS  Dhlamini, JJ Terblans, OM Ntwaeaborwa, K.T. Hillie, JR  Botha, HC Swart, Photoluminescence properties of powder and pulsed laser deposited PbS nanoparticles in SiO₂, J. Lumin. 128(12)(2008), 1997-2003

17.  MS Dhlamini, JJ Terblans, RE Kroon, OM Ntwaeaborwa, JM Ngaruiya,  JR Botha, HC Swart, Photoluminescence Properties of SiO₂ Surface-Passivated PbS Nanoparticles, South African Journal of Science, 104 (2008) 398-400

18.  OM Ntwaeaborwa, HC Swart, RE Kroon, JJ Terblans, PH Holloway, Synthesis, Characterization and Luminscent Properties of ZnO-SiO₂:PbS, J. Vac. Sci Technol. A 27 (4) (2009) 767-769

19.  H.C. Swart, J.J. Terblans, O.M. Ntwaeaborwa, E Coetsee, B.M. Mothudi and M.S. Dhlamini, Photon emission mechanisms of different phosphors, Nucl. Instr. and Meth. B 267 (2009) 2630-2633

20.  V. Kumar, HC Swart, OM Ntwaeaborwa, R Kumar, SP Lochab, V Mishra, N Singh, Thermoluminescence response of CaS:Bi³⁺ nanophosphor exposed to 200 MeV Ag⁺¹⁵ ion beam, Optical Materials,32 (2009) 164-168

21.  OM Ntwaeaborwa, RE Kroon, V. Kumar, T Dubroca, J-P Ahn, J-K Park, HC Swart, Ex- situ synthesis and optical properties of ZnO-PbS nanocomposite, J. Phys. Chem. Sol. 70 (2009) 1438-1442

22.  O.M. Ntwaeaborwa, P.D.Nsimama, J.T. Abiade, E. Coetsee and H.C Swart, The effects of substrate temperature on the structure, morphology and photoluminescence properties of pulsed laser deposited SrAl2O4:Eu²⁺,Dy³⁺ thin films, Physica B. 404 (2009) 4436-4439

23.  M.M. Biggs, O.M. Ntwaeaborwa, J.J. Terblans, and H.C. Swart,  Characterization and luminescent properties of SiO2:ZnS:Mn²⁺ and ZnS:Mn²⁺ nanophosphors synthesized by a sol-gel method,

Physica B. 404 (2009) 4470-4475

24.  B.M Mothudi, O.M. Ntwaeaborwa, J.R. Botha and H.C. Swart, Photoluminescence and phosphorescence properties of MAl₂O4:Eu²⁺,Dy³⁺ (M = Ca, Ba, Sr)  phosphors prepared at an initiating combustion temperature of 500 ^oC, Physica B. 404 (2009) 4440-4444

25.  P.D. Nsimama, O.M. Ntwaeaborwa, E. Coetsee and H.C Swart, The influence of the number of pulses on the morphological and photoluminescence properties of SrAl2O4:Eu²⁺, Dy³⁺ thin films prepared by pulsed laser deposition, Physica B 404 (2009) 4489-4492

26.  M.S. Dhlamini, O.M. Ntwaeaborwa, J.M. Ngaruiya, H.C. Swart, Sensitized luminescence through nanoscopic effects of ZnO encapsulated in SiO₂:Tb³⁺ sol-gel derived phosphor, Physica B. 404 (2009) 4406-4410

27.     E Coetsee, JJ Terblans, OM Ntwaeaborwa,HC Swart, Luminescent Mechanism of Y₂SiO₅:Ce³⁺, Physica B 404 (2009) 4426-4430

28.  Amrita Saxena, D.N.S. Srivastwa, Suruchi Sharma, Seema Thakur, Vinay Kumar, O.M. Ntwaeaborwa and H C Swart, Perculiar features of KCL+SbCl₃ Phosphors: PL and XRD studies, Journal of Modern Optics, 56 (17) (2009) 1880-1884

29.     Vinay Kumar, Varun Mishra, MM Biggs,IM Nagpure,OM Ntwaeaborwa, JJ Terblans, HC Swart, Electron beam induced green luminescence and degradation study of CaS:Ce nanocrystalline phosphors for FED applications, Applied Surface Science, 256 (2010) 1720 -1724

30.  I.M. Nagpure, K.N. Shinde, Vinay Kumar, OM Ntwaeaborwa, SJ Dohble, HC Swart, On the structure and photoluminescence properties of Na₃Al₂(PO)₄:RE (Ce,Eu,Mn²⁺) phosphors prepared by combustion method, Journal of Alloy and Compounds, 492 (2010) 384-388

31.  Vinay Kumar, Varun Mishra, MM Biggs, OM Ntwaeaborwa, HC Swart, Optical and luminescence investigations of Ce³⁺ doped CaS long after glow Nanophosphors, J. Alloys Compd. 492 (2010) L8-L12

32.  Vinay Kumar, Shreyas S Pitale, MM Biggs, IM Nagpure, OM Ntwaeaborwa, HC Swart,  Synthesis of Ce³⁺ doped SrS nanocrystalline phosphors using a simple aqueous method, Mat. Lett. (2010) 752-754