Electrical and Computer Engineering

Electrical and Computer Engineering

Dr Martin Allen

Publications


Patents

M.W. Allen and S.M. Durbin, “Silver oxide based ZnO contacts and method of manufacture,” Provisional Patent filed on 17 May 2007 at the US Patent and Trademark Office.

Publications in Peer Reviewed Journals

M.W. Allen and S.M. Durbin, "Role of a universal branch-point energy at ZnO interfaces", Phys. Rev. B82, 165310 (2010).

M.W. Allen, C.H. Swartz, T.H. Myers, T.D. Veal, C.F. McConville and S.M. Durbin, “Bulk transport measurements in ZnO: The effect of surface electron layers,” Physical Review B 81, 075211 (2010).

M.W. Allen, X. Weng, J.M. Redwing, K.Sarpatwari, S.E. Mohney, H. von Wenckstern, M. Grundmann and S.M. Durbin, “Temperature-Dependent Properties of Nearly Ideal ZnO Schottky Diodes,” IEEE Transactions on Electron Devices 56, 2160 (2009).

K. Sarpatwari, O.O. Awadelkarim, M.W. Allen, S.M. Durbin and S.E. Mohney, “Extracting the Richardson Constant: IrOx/n-ZnO Schottky Diodes,” Applied Physics Letters 94 242110 (2009).

M.W. Allen, R.J. Mendlesberg, R.J. Reeves and S.M. Durbin, “Oxidized noble metal Schottky contacts to n-type ZnO,” Applied Physics Letters 94 103508 (2009).

M.W. Allen and S.M. Durbin, “Influence of oxygen vacancies on Schottky contacts to ZnO,” Applied Physics Letters 92, 122110 (2008).

M.W. Allen, S.M. Durbin and J.B. Metson, “Silver oxide Schottky contacts on n-type ZnO,” Applied Physics Letters 91, 053512 (2007).

H. von Wenckstern, H. Schmidt, M. Grundmann, M.W. Allen, P. Miller, R.J. Reeves and S.M. Durbin, “Defects in hydrothermal bulk ZnO,” Applied Physics Letters 91, 022913 (2007).

M.W. Allen, P. Miller, R.J. Reeves and S.M. Durbin, “Influence of spontaneous polarization on the electrical and optical properties of bulk, single crystal ZnO,” Applied Physics Letters 90, 062104 (2007). [Selected for the 19 February 2007 issue of the Virtual Journal of Nanoscale Science and Technology 15 (7) 2007].

M.W. Allen, M.M. Alkaisi and S.M. Durbin, “Metal Schottky diodes on Zn-polar and O-polar bulk ZnO,” Applied Physics Letters 89, 103520 (2006). [Selected for the 18 September 2006 issue of the Virtual Journal of Nanoscale Science and Technology 14 (12) 2006].

M.W. Allen and R.L. McKenzie, “Enhanced UV exposure on a ski-field compared with exposures at sea level,” Photochemical & Photobiological Sciences 4 (5), 429 (2005).

Peer Reviewed Conference Proceedings

M.W. Allen, H. von Wenckstern, M. Grundmann, P.D.C. King, S.A. Hatfield, P.H. Jefferson, T.D. Veal, C.F. McConville and S.M. Durbin, “Mechanisms in the Formation of High Quality Schottky Contacts to n-type ZnO,” Proceedings of the Fall 2007 Meeting of the Materials Research Society (26-30 November 2007, Boston, MA, USA) Symposium L, 1035, L10-06.

M.W. Allen, P. Miller, J. Chai, J.B. Metson, R.J. Reeves, M. Alkaisi and S.M. Durbin, “Schottky contact behaviour as a function of metal and ZnO surface polarity,” Proceedings of the Fall 2006 Meeting of the Materials Research Society (27 November - 1 December 2006, Boston, MA, USA) Symposium K, 957, K09-03.

M.W. Allen and R.L. McKenzie, “UV exposure on New Zealand ski-fields,” UV Radiation and its effects – 2006, Royal Society of New Zealand, Wellington, Miscellaneous series 68, 74 (2006).

Invited Conference Presentations

M.W. Allen and S.M. Durbin, “Schottky Contacts For High Performance Zinc Oxide Semiconductor Devices,” 2nd International Conference on Functional Materials and Devices 2008, (16-19 June 2008, Kuala Lumpur, Malaysia). Invited Oral presentation.

Conference Presentations (contributing author in italics)

M.W. Allen, K. Sarpatwari, O.O. Awadelkarim, S.E. Mohney and S.M. Durbin, “The Richardson constant for Schottky contacts to n-ZnO,” 2009 Electronic Materials Conference (24-26 June 2009, Penn State University, USA). Oral presentation.

M.W. Allen, K. Sarpatwari, S.E. Mohney, X. Weng, J.M. Redwing and S.M. Durbin, “Impact of surface properties on ZnO Schottky devices,” AMN-4, 4th International Conference on Advanced Materials and Nanotechnology (8-12 February 2009, Dunedin, New Zealand). Oral presentation.

C.F. McConville, T.D. Veal, P.D.C. King, S.A. Hatfield, B. Martel, J. Chai, M.W. Allen, S.M. Durbin, J. Zuniga-Perez and V. Munoz-Sanjose, “Surface and interface electronic properties of bulk and epitaxial ZnO,” 55th American Vacuum Society Symposium (19-24 October 2008, Boston, MA, USA). Oral presentation

M.W. Allen and S.M. Durbin, “Factors influencing the formation of Schottky contacts to zinc oxide,” 55th American Vacuum Society Symposium (19-24 October 2008, Boston, MA, USA). Oral presentation.

M.W. Allen and S.M. Durbin, “The role of metal induced gap states in the formation of laterally homogeneous Schottky contacts to ZnO,” 5th International Workshop on ZnO (22-24 September 2008, Ann Arbor-Ypsilanti, MI, USA).

M.W. Allen and S.M. Durbin, “The influence of interfacial oxygen vacancies on Schottky contacts to ZnO,” IUMRS-ICEM 2008 International Conference on Electronic Materials, (28 July – 1 August 2008, Sydney, Australia). Oral presentation.

M.W. Allen, P. Miller, R.J. Reeves, O. Avayu, Y. Rosenwaks and S.M. Durbin, “Spontaneous Polarisation Effects in ZnO,” 2008 International Conference On Nanoscience and Nanotechnology (25-29 February 2008, Melbourne, Victoria, Australia). Oral presentation.

M.W. Allen, C.H. Swartz, M. Henseler, R.J. Reeves, J.B. Metson, H. Von Wenckstern, M. Grundmann, S.A. Hafield, P.H. Jefferson, P.D.C. King, T.D. Veal, C. McConville, M. Kobayashi and S.M. Durbin, “Mechanisms in the formation of high quality Schottky contacts to n-type ZnO,” Symposium L of the 2007 Fall Meeting of the Materials Research Society (26 -30 November 2007, Boston, MA, USA). Oral presentation.

C.H. Swartz, S.M. Durbin, M.W. Allen and T.H. Myers, “Separation of Surface and Bulk Conduction in Hydrothermally grown ZnO Using Variable Magnetic Field Hall Effect Measurements,” Symposium L of the 2007 Fall Meeting of the Materials Research Society (26 -30 November 2007, Boston, MA, USA). Oral presentation.

C.H. Swartz, M.W. Allen, S.M. Durbin and T.H. Myers, “Separation of surface and bulk conduction in ZnO using variable magnetic field Hall effect measurements,” 54th American Vacuum Society Symposium (14-19 October 2007, Seattle, Washington, USA). Oral presentation.

M.W. Allen, C.H. Swartz, P. Miller, R.J. Reeves and S.M. Durbin, “Influence of surface polarity on the electrical and optical properties of bulk ZnO,” 2007 Electronic Materials Conference (20-22 June 2007, Notre Dame, Indiana, USA). Oral presentation.

M.W. Allen, C.H. Swartz, P. Miller, R.J. Reeves, J.B. Metson, M.M. Alkaisi and S.M. Durbin, “High quality silver oxide Schottky devices on polar and non-polar zinc oxide,” AMN-3, 3rd International Conference on Advanced Materials and Nanotechnology (11-17 February 2007, Wellington, New Zealand). Oral presentation.

M.W. Allen, P. Miller, J. Chai, J.B. Metson, R.J. Reeves, M.M. Alkaisi and S.M. Durbin, “Schottky Contact Behaviour as a Function of Metal and ZnO Surface Polarity”, 2006 Fall Meeting of the Materials Research Society (27 November – 1 December 2006, Boston, USA). Oral presentation.

M.W. Allen, P. Miller, R.J. Reeves, J.B. Metson, M.M. Alkaisi and S.M. Durbin, “ZnO Schottky diode performance as a function of surface polarity”, 4th International Workshop on ZnO (3-6 October 2006, Giessen, Germany). Oral presentation.

M.W. Allen, W.C.T. Lee, P. Miller, R.J. Reeves, M.M. Alkaisi and S.M. Durbin, “ZnO Schottky diode performance as a function of Schottky metal and surface polarity,” 2006 Electronic Materials Conference (28-30 June 2006, State College, PA, USA). Oral presentation.

C.Y. Wright, A.I. Reeder, G. Bodeker, M.W. Allen and R.L. McKenzie, “Linking real-time solar UV radiation exposure with the social and physical environment, activities, knowledge and attitudes of New Zealand school children,” 6th World Congress on Melanoma (6-10 September 2005, Vancouver, Canada).

C.Y. Wright, M.W. Allen, G. Bodeker, R.L. McKenzie and A.I. Reeder, “Real-time measurements of ultraviolet radiation using portable electronic dosimeters,” 2004 International Non-Ionising Radiation Workshop and Symposium (19–22 May 2004, Seville, Spain).