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Associate Professor of Optics & Photonics
Nanophotonics Device Group
Email
winston@creol.ucf.edu
Phone
Office(407) 823-6898
Lab 156(407) 823-6928
Students(407) 823-6805, 6929
Locations
OfficeCREOL A215
MBE LabCREOL 180B
NPDG LabCREOL 156
StudentsCREOL 232 & 156A
Biography
Winston V. Schoenfeld is currently an Associate Professor at CREOL, The College of Optics & Photonics at the University of Central Florida. He received his Ph.D. degree in materials science from the University of California, Santa Barbara (UCSB) in 2000, and holds an MS and BS in Materials Science and Engineering from the University of Florida. Prior to joining CREOL, Dr. Schoenfeld served as Device Manager at Uniroyal Optoelectronics, working in the area of high brightness light emitting diodes (LEDs), and later in 2003 founded Medical Lighting Solutions, Inc., a supplier of specialty LED lighting solutions for the medical and biomedical industries. He has authored/co-authored more than 90 refereed journal publications in the areas of the epitaxial growth and properties of oxide semiconductors, oxide and nitride-semiconductor light emitting diodes, self-assembled quantum dots, e-beam nano-lithography, quantum information/networks, comprehensive modeling of nanowire devices, and solid-state nuclear material detection. Dr. Schoenfeld currently serves as Chair of the Florida Chapter of AVS, Principal Editor for the Journal of Materials Research, and Chair of the Micro/Nano-Lithography MOEMS-MEMS conference at SPIE Photonics West.
Links
Group Webpage
Awards & Honors
2009 Promotion and Tenure Approved     
2008 Elected as Chair of the Florida Chapter of the American Vacuum Society     
2006 Elected to the Executive Committee of the Florida Chapter of the American Vacuum Society      more»
2006 Presidential Major Research Equipment Award      more»
Key Publications and Presentations
Invited Papers
2009 W. V. Schoenfeld, J. W. Mares, and M. Falanga "Binary Cubic Oxide Compounds for Deep-UV Wavelength Applications (Invited Talk)" GOMAC Tech 2009, Double Tree Resort, Orlando, FL.
2009 W. V. Schoenfeld, J. W. Mares, M. Falanga, S. Karpov, A. Osinsky, and B. Hertog "Alloy Heterostructure Design in ZnCdMgO (Invited Talk)" GOMAC Tech 2009, Double Tree Resort, Orlando, FL.
2007 J. W. Mares, H. Seigneur, A. V. Thompson, A. V. Osinsky, J. Xie, J. W. Dong, B. Hertog, P. P. Chow, S. J. Pearton, D. Look, M. Gerhold, and W. V. Schoenfeld "Epitaxial Growth of ZnO–based Multilayered Structures for Electronic and Photonic Applications (Invited Talk)" FL-AVS Symposium Orlando, FL, 2007
2006 A. V. Osinsky, J. Dong, J. Q. Xie, B. Hertog, A. M. Dabiran, P. Chow, S. Pearton, D. P. Norton, D. Look, W. Schoenfeld, O. Lopatiuk, L. Chernyak, M. Cheung, A. Cartwright, and M. Gerhold "ZnCdO/ZnMgO and ZnO/AlGaN heterostructures for UV and Visible Light Emitters (Invited Talk)" MRS Spring Meeting, 2006
2006 A. V. Osinsky, J. Dong, J. Q. Xie, B. Hertog, M. Z. Kauser, A. M. Dabiran, P. Chow, W. V. Schoenfeld, and L. Chernyak "ZnCdO/AlGaN heterostructures for application as UV and visible light emittters (Invited Talk)" OPTO 2006, San Jose, CA, 2006
Refereed Papers
2008 H. P. Seigneur, M. N. Leuenberger, and W. V. Schoenfeld "Single-photon Mach-Zehnder interferometer for quantum networks based on the single-photon Faraday effect" Journal of Applied Physics, vol. 104, 014307 (2008)
2008 J. W. Mares, J. Harben, A. V. Thompson, and W. V. Schoenfeld "Gamma Radiation Induced Degradation of Operating Quantum Dot Lasers" IEEE Transactions on Nuclear Science 55, pp. 763-768 (2008)
2008 J. W. Mares, M. Falanga, A. V. Thompson, A. Osinsky, J. Q. Xie, B. Hertog, A. Dabiran, P. P. Chow, S. Karpov, and W. V. Schoenfeld "Hybrid CdZnO/GaN quantum-well light emitting diodes" Journal of Applied Physics, vol. 104, 093107-5, 2008
2008 J. W. Mares, M. Falanga, W. R. Folks, G. Boreman, A. Osinsky, B. Hertog, J. Q. Xie, and W. V. Schoenfeld "Complex Refractive Indices of CdxZn1-xO Thin Films Grown by Molecular Beam Epitaxy" Journal of Electronic Materials, vol. 37, pp. 1665-1673, 2008
2008 P. O. Holtz, E. S. Moskalenko, M. Larsson, K. F. Karlsson, W. V. Schoenfeld, and P. M. Petroff "Effects of external fields on the excitonic emission from single InAs/GaAs quantum dots" Microelectronics Journal 39, pp. 331-334 (2008)
2008 W. Lim, D. P. Norton, S. J. Pearton, X. J. Wang, W. M. Chen, I. A. Buyanova, A. Osinsky, J. W. Dong, B. Hertog, A. V. Thompson, W. V. Schoenfeld, Y. L. Wang, and F. Ren "Migration and luminescence enhancement effects of deuterium in ZnO/ZnCdO quantum wells" Applied Physics Letters 92, (2008)
2007 A. V. Thompson, J. W. Mares, H. Seigneur, and W. V. Schoenfeld "Optimization of GaAs PIN diodes for neutron detection" Physics and Simulation of Optoelectronic Devices XV, San Jose, CA, USA, 2007, pp. 64680P-5
2007 A. V.Thompson, C. Boutwell, J. W. Mares, A. Osinsky, B. Hertog, J. Q. Xie, S. J. Pearton, D. P. Norton, and W. V. Schoenfeld "Thermal stability of CdZnO/ZnO multi-quantum-wells" Applied Physics Letters 91, 201921 (2007).
2007 C. Mazuir and W. V. Schoenfeld "Modeling of nitride based core/multishell nanowire LEDs" Journal of Nanophotonics 1, 013503 (2007).
2007 E. S. Moskalenko, M. Larsson, K. F. Karlsson, P. O. Holtz, B. Monemar, W. V. Schoenfeld, and P. M. Petroff "Enhancement of the luminescence intensity of InAs/GaAs quantum dots induced by an external electric field" Nano Letters 7, pp. 188-193 (2007).
2007 J. W. Mares, F. R. Ruhge, A. V. Thompson, P. G. Kik, A. Osinsky, B. Hertog, A. M. Dabiran, P. P. Chow, and W. V. Schoenfeld "Optical and morphological properties of MBE grown wurtzite CdxZn1-xO thin films" Optical Materials, vol. 30, pp. 346-350 (2007).
2006 A. V. Osinsky, J. Dong, B. Hertog, A. M. Dabiran, P. Chow, W. Schoenfeld, S. J. Pearton, D. Look, and A. Cartwright "Properties of CdZnO/ZnO Heterostructures for UV Light Emitters" ECS Transactions 3, pp. 323-331 (2006).
2006 A. V. Osinsky, J. Dong, B. Hertog, A. M. Dabiran, P. Chow, W. Schoenfeld, S. Pearton, D. Look, and A. Cartwright "CdZnO/ZnO Heterostructures for UV-Visible Light Emitters" ECS Meeting Abstracts 602, pp. 1316-1316 (2006).
2006 E. S. Moskalenko, M. Larsson, K. F. Karlsson, P. O. Holtz, B. Monemar, W. V. Schoenfeld, and P. M. Petroff "Enhancement of the Luminescence Intensity of InAs/GaAs Quantum Dots Induced by an External Electric Field" Nano Letters, 2006.
2006 E. S. Moskalenko, M. Larsson, W. V. Schoenfeld, P. M. Petroff, and P. O. Holtz "Carrier transport in self-organized InAs/GaAs quantum-dot structures studied by single-dot spectroscopy" Physical Review B 73, Apr 2006.
2006 M. Larsson, E. S. Moskalenko, L. A. Larsson, P. O. Holtz, C. Verdozzi, C. O. Almbladh, W. V. Schoenfeld, and P. M. Petroff "Magnetic field effects on optical and transport properties in InAs/GaAs quantum dots" Physical Review B 74 (Condensed Matter and Materials Physics), pp. 245312-8 (2006).
2006 O. Lopatiuk-Tirpak, W. V. Schoenfeld, L. Chernyak, F. X. Xiu, J. L. Liu, S. Jang, F. Ren, S. J. Pearton, A. Osinsky, and P. Chow "Carrier concentration dependence of acceptor activation energy in p-type ZnO" Applied Physics Letters 88, 202110 (2006).
2006 V. Donchev, E. S. Moskalenko, K. F. Karlsson, P. O. Holtz, B. Monemar, W. V. Schoenfeld, J. M. Garcia, and P. M. Petroff "Enhancement of the photoluminescence intensity of a single InAs/GaAs quantum dot by separate generation of electrons and holes" Physics of the Solid State 48, pp. 1993-1999 (2006).
2005 E. S. Moskalenko, F. K. Karlsson, V. T. Donchev, P. O. Holtz, B. Monemar, W. V. Schoenfeld, and P. M. Petroff "Effects of separate carrier generation on the emission properties of InAs/GaAs quantum dots" Nano Letters 5, pp. 2117-2122 (2005).
2005 E. S. Moskalenko, K. F. Karlsson, V. Donchev, P. O. Holtz, W. V. Schoenfeld, and P. M. Petroff "Effect of an electric field on the carrier collection efficiency of InAs quantum dots" Physics of the Solid State 47, pp. 2154-2161 (2005).
2005 R. Khanna, S. Y. Han, S. J. Pearton, D. Schoenfeld, W. V. Schoenfeld, and F. Ren "High dose Co-60 gamma irradiation of InGaN quantum well light-emitting diodes" Applied Physics Letters 87, p. 212107 (2005).
2004 E. S. Moskalenko, K. F. Karlsson, V. Donchev, P. O. Holtz, B. Monemar, W. V. Schoenfeld, and P. M. Petroff "Effective optical manipulation of the charge state and emission intensity of the InAs/GaAs quantum dots by means of additional infrared illumination" Applied Physics Letters 85, pp. 754-756 (2004).
2004 E. S. Moskalenko, K. F. Karlsson, V. Donchev, P. O. Holtz, W. V. Schoenfeld, and P. M. Petroff "The effect of an additional infrared laser on the carrier collection efficiency of InAs quantum dots" Applied Physics Letters 84, pp. 4896-4898 (2004).
2004 V. Donachev, K. F. Karlsson, E. S. Moskalenko, P. O. Holtz, B. Monemar, W. V. Schoenfeld, J. Garcia, and P. M. Petroff "Temperature study of the photoluminescence of a single InAs/GaAs quantum dot" Phys. Stat. Solidi (c) 3, p. 608 (2004).
Proceedings Papers
2008 A. V. Thompson, H. Seigneur, M. N. Leuenberger, and W. V. Schoenfeld "Active Components in Photonic Integrated Circuits Using Electron Spins in Quantum Dots" Photonics Europe Strasbourg, France, 2008
2008 H. P. Seigneur, M. N. Leuenberger, and W. V. Schoenfeld "Design of single-photon Mach-Zehnder interferometer based devices for quantum information processing" Advanced Optical Concepts in Quantum Computing, Memory, and Communication, San Jose, CA, USA, 2008, pp. 69030C-11
2007 J. Deng, S. Halder, J. C. M. Hwang, A. Osinsky, H. Seigneur, W. V. Schoenfeld, and L. Chernyak "Radio-frequency characteristics of non-line-of-sight, ultraviolet links" 2007 Asia-Pacific Microwave Photonics Conference, Jeju Island, Korea, 2007
2006 A. V. Osinsky, J. W. Dong, J. Q. Xie, B. Hertog, A. M. Dabiran, P. P. Chow, S. J. Pearton, D. P. Norton, D. C. Look, W. Schoenfeld, O. Lopatiuk, L. Chernyak, M. Cheung, A. N. Cartwright, and M. Gerhold "ZnCdO/ZnMgO and ZnO/AlGaAn Heterostructures for UV and Visible Light Emitters" Materials Research Society Symposium Proceedings 892, 2006.
2006 P. O. Holtz, E. S. Moskalenko, M. Larsson, K. F. Karlsson, W. V. Schoenfeld, and P. M. Petroff "Enhanced luminescence from InAs/GaAs quantum dots" Optical Materials in Defence Systems Technology III, Stockholm, Sweden, 64010I-12 (2006).
2005 A. V. Osinsky, J. Dong, J. Q. Xie, B. Hertog, A. M. Dabiran, P. P.Chow, S. J. Pearton, D. P. Norton, D. C. Look, W. Schoenfeld, O. Lopatiuk, L. Chernyak, M. Cheung, A. N. Cartwright, and M. Gerhold "ZnCdO/ZnMgO and ZnO/AlGaN heterostructures for UV and Visible light emitters" MRS Annual Fall Meeting, Boston, MA, 2005.
Refereed Presentations
2005 J. Mares, H. Seigneur, A. Osinsky, B. Hertog, P. P. Chow, and W. V. Schoenfeld "Characterization of MBE-grown CdxZn1-xO thin films" Optics in the Southeast, Atlanta, GA, 2005.
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Research
Light Emitting Diodes (LEDs)
enhanced light extraction and packaging
medical and biomedical applications of LEDs
Quantum Networks and Quantum Information
Self-assembled Quantum Dots (SAQDs)
MBE growth of oxide-based quantum dots
multi-color optical memory structures, quantum bits, up/down-converters, and lasers
Solid State Neutron Detectors
Wide Band Gap Semiconductors for Deep-UV to Visible Applications
MBE growth and development of wurtzite MgCdZnO emitters and detectors
MBE growth of cubic binary metal-oxide semiconductor compounds