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Charles Sheppard

Prof. Charles J Sheppard

Associate Professor
Name: Charles J Sheppard
Location: C1 Lab 130A Auckland Park Kingsway Campus
Physics Academic Staff  Staff Members

Contact Details:
Tel: 011 559 3684

Email: cjsheppard@uj.ac.za

About Prof. Charles J Sheppard

ACADEMIC BACKGROUND

Qualifications: PhD., Physics in January 2008

  : M.Sc., Physics in April 2002

 : BSc (Hons), Physics in 1999.

  : BSc (Physics and Chemistry) degree in 1998

Courses Presented Between 2001 and 2008
Lecturing
Physics 1C (English and Afrikaans): Auxiliary Physics C
Physics 1D (English and Afrikaans): Auxiliary Physics D
Physics 1B (Afrikaans) : Introductory Physics B
Fundamental Physics.
Practical
Practical sessions Physics 3A.
Practical – Honnors – PV Project.
Coordinator: Practical sessions Physics 1A/C and 1B/D.

Courses Presented Between 2009 and 2010
Lecturing
Physics 2A: Static and Dynamic Electromagnetism
Practical
Coordinator: Practical sessions Physics 2A
Practical sessions Physics 3A

PUBLICATIONS

Journal Publications (last 5 years)

1.  CJ Sheppard, V. Alberts, “Deposition of single-phase CuIn(Se, S)2 thin films by sulfurization of selenised Cu/In alloys.” Journal of Physics D:                                 Applied Physics, 39 (17), (2006), p 3760

2.  CJ Sheppard, V. Alberts, JR Botha, “Structural and optical characterization of single-phase CuIn(Se,S)2 thin films, deposited using a two-step process”,               Physiscs Status Solidi, C, 5 (2), (2008), 641 – 644

3.  Erees Queen B. Macabebe, Charles J. Sheppard, Vivian Alberts, E. Ernest van Dyk, “Effects of different selenization conditions on the device parameters            of CuIn(Se,S)2 solar cells.”, Thin Solid Films, 517, (2009), 2380

4.  Erees Queen B. Macabebe, Charles J. Sheppard, E. Ernest van Dyk, “Device and performance parameters of CuIn(Se,S)2-besed solar cells with varying            i-ZnO layer thickness.”, Physica B, Vol, 404, 4466, (2009)

5.  Erees Queen B. Macabebe, Charles J. Sheppard, E. Ernest van Dyk, “Parameter extraction from I-V characteristics of PV devices.” Solar Energy, 85, 12,            (2011)

6.  CJ Sheppard, ARE Prinsloo, HL Alberts, AM Strydom, “Evidence for a possible Quantum Critical Point in a Cr-Si alloy doped with Mo.” Accepted for                     publication in Journal of Applied Physics, April 2011

Extended Abstracts (last 5 years)

1.  C.J Sheppard, V. Alberts ,“Deposition of single-phase CuIn(Se,S)2 thin films from the sulfurization of selenized CuIn alloys.”, Proceedings 20th European             Photovoltaic Solar Energy Conference and Exhibition. Barcelona, Spain, June 2005

2.  C.J Sheppard, V. Alberts ,“Cu(In,Ga)(Se,S)2 and CuIn(Se,S)2 based devices manufactured from homogeneous single-phase absorber films.”,                              Proceedings 21th European Photovoltaic Solar Energy Conference and Exhibition, Dresden, Germany, September 2006

3.  EQ Macabebe, CJ Sheppard, EE van Dyk, “Electrical characterization of CISS and CIGSS solar cells using a PSO-based parameters extraction routine”,            The International Conference on Molecular/Nana-Photochemistry, Photo catalysis and Solar Energy Conversion, Cairo, Egypt, 23 – 29 February 2008

4.  EQ Macabebe, CJ Sheppard, EE van Dyk, “Effect of different selenization conditions on the electrical parameters of CuInSeS solar cells”, European                    Material Research Society (E-MRS) Spring Meeting 2008, 26 – 30 May, 2008, Strasbourg, France.

5.  E.Q.B. Macabebe C.J. Sheppard, E.E van Dyk, “Parameter Extraction from I-V Characteristics of PV Devices.”, ISES Solar World Congress 2009,                       Sandton Convention Centre, Johannesburg, South Africa, 11-14 October 2009 -Extended Abstract was reviewed and accepted for conference                             presentation

6.  A. Nurick, C.J. Sheppard, “A Self Powered Hybrid Photovoltaic and Solar Thermal Cell.”, ISES Solar World Congress 2009, Sandton Convention Centre,             Johannesburg, South Africa, 11-14 October 2009, -Extended Abstract was reviewed and accepted for conference presentation

        CONFERENCE PRESENTATIONS

       National / International Conference Attendance / Presentation

  • C.J Sheppard, V. Alberts ,“Deposition of single-phase CuIn(Se,S)2 thin films from the sulfurization of selenized CuIn alloys.”, Proceedings 20th European Photovoltaic Solar Energy Conference and Exhibition. Barcelona, Spain, June 2005
  • C.J Sheppard, V. Alberts ,“Cu(In,Ga)(Se,S)2 and CuIn(Se,S)2 based devices manufactured from homogeneous single-phase absorber films.”, Proceedings 21th European Photovoltaic Solar Energy Conference and Exhibition. Dresden, Germany, September 2006
  • CJ Sheppard, V. Alberts, JR Botha, “Structural and optical characterization of single-phase CuIn(Se,S)2 thin films, deposited using a two-step process”, 2 – 6 May 2007, Kariega Game Reserve
  • N.M. Thantsha, F.J. Vorster, C.J. Sheppard, E.E van Dyk, “Effects of Temperature on the Current-Voltage Characteristics of Cu(In,Ga)(Se,S)2 Solar Cells.”, European Materials Research Society 2009 Conference, Strasbourg, France, 8-12 June 2009
  • E.Q.B. Macabebe C.J. Sheppard, E.E van Dyk, “Parameter Extraction from I-V Characteristics of PV Devices.”, ISES Solar World Congress 2009, Sandton Convention Centre, Johannesburg, South Africa, 11-14 October 2009
  • A. Nurick, C.J. Sheppard, “A Self Powered Hybrid Photovoltaic and Solar Thermal Cell.”, ISES Solar World Congress 2009, Sandton Convention Centre, Johannesburg, South Africa, 11-14 October 2009
  • CJ Sheppard, ARE Prinsloo, HL Aberts, AM Strydom, Evidence for a possible Quantum Critical Point in a Cr-Si alloy doped with Mo.” 55th Annaul Conference on Magnetism and Magnetic Materials, Atlanta Georgia, USA, November 14-18, 2010
  • C.J Sheppard, V. Alberts, “Characterization of single-phase CuIn(Se,S)2 thin films.” 51st Annual Conference, SAIP 4 – 7 July 2006, University of the Western Cape
  • E.Q.B. Macabebe C.J. Sheppard, E.E van Dyk, “Device and Performance Parameters of CuIn(Se,S)2-based Solar Cells.”, 54th Annual Conference, SAIP, 6-10 July 2009, University of Kwazulu-Natal.
  • H.L. Alberts, A.R.E. Prinsloo, C.J. Sheppard, A.M. Strydom, “Spin-Density-Wave Properties of Single Crystalline Cr1-xAlx Alloys Near the Triple Point Concentration.”, 54th Annual Conference, SAIP, 6-10 July 2009, University of Kwazulu-Natal.
  • N.M. Thantsha, F.J. Vorster, C.J. Sheppard, E.E van Dyk, “Temperature dependence LBIC and I-V Characterization of CIGSS Solar Cells”, 54th Annual Conference, SAIP, 6-10 July 2009, University of Kwazulu-Natal.
  • CJ Sheppard, ARE Prinsloo, HL Alberts, AM Strydom, “Effect of Mo doping on the spin-density-wave behavior of Cr+2.5at.% Si alloy.” 55th Annual Conference, SAIP, 27 September – 1 October 2010, CSIR, Pretoria,
  • Blessed Muchono, ARE Prinsloo, CJ Sheppard, HL Alberts, AM Strydom, “Spin-density-wave effects in the Cr-Al-Mo alloy system.” 55th Annual Conference, SAIP, 27 September – 1 October 2010, CSIR, Pretoria,

SPECIALISED GROUP MEETINGS/WORKSHOPS

1.  C.J. Sheppard, “The use of HR-XRD (High Resolution X-Ray Diffraction) in the Laboratory.” Annual XRD user group meeting hosted by Philips South                  Africa (Pty) Ltd, 20 September 1999

2.  Invited to attend and attended the Network of Expertise in Energy Technology, (NEET) workshop, held in collaboration with SANERI, IEA and REEEP at             the Sandton Convention Centre, Johannesburg, 20 – 22 February 2007

3.  Attended the meeting of the International Energy Agency’s Photovoltaic Power Systems Executive Committee, held at the end of October in Denmark,                2007.

CURRENT RESEARCH INTERESTS: 

Current research interest focuses around the interesting magnetic properties of Cr and its alloys. Attention is a specially given to the quantum critical behavior which was discovered in Cr.