Education

Doctor of Philosophy, Electrical Engineering
    Georgia Institute of Technology    1991

Master of Science, Physics
    Georgia Institute of Technology    1987

Bachelor of Science, Engineering Science and Mechanics (with Honors)
    Pennsylvania State University    1984


Employment History

Georgia Institute of Technology
    Senior Research Scientist    1997-Present
    Research Scientist II    1991-1997
    Systems Analyst    1991
    Graduate Research Assistant    1984-1991


Experience Summary

At Georgia Tech has investigated hetero and homoepitaxial molecular beam epitaxial growth of II-VI and group IV semiconductors, fluorides and oxides for medium to long wavelength infrared optoelectronic devices and display applications.  Has codeveloped a chemical beam epitaxy (CBE) growth system, including a novel mercury source, for HgCdTe, ZnSSe and Si material systems.  Electrical and optical characterization of the epitaxial layers have included the use of low temperature photoluminescence, Hall Effect and lifetime measurement systems.  Also, has been involved in the computer modeling of the electrical properties of II-VI and III-V devices.


Current Fields of Interest

Characterization and growth of II-VI, III-V, fluoride and oxide materials and novel device structures by molecular and chemical beam epitaxy; materials for optoelectronic and phosphor applications.


Professional Affiliations and Special Honors

American Vacuum Society
American Association for Crystal Growth
Materials Research Society
Institute of Electrical and Electronics Engineers
Society of Photo-Optical Instrumentation Engineering
Electrochemical Society
Society for Information Display
1988 Georgia Tech Research Institute Outstanding Performance as a Graduate Student Researcher
NATO Advanced Study Institute (NSF Grant) to attend "Low Dimensional Structures in Semiconductors," 1990


Major Reports and Publications
 
1. "Gas Source Doping of Molecular Beam Epitaxially Grown CdTe Using Arsine," J. Cryst. Growth 137, pp. 435-441, (1994), coauthor

2. "CdTe and HgTe Surface Growth Kinetics for Molecular and Metalorganic Molecular Beam Epitaxy," J. Elec. Mat. 22, pp. 815-820, (1993), coauthor

3. "Recent Advances in Metalorganic Molecular Beam Epitaxy of HgCdTe," SPIE 2021, pp. 56-66, (1993), coauthor

4. "Gas Source Molecular Beam Epitaxy of CdTe and HgCdTe," Proceedings of the Second Workshop on Electro-Optical Materials, GACIAC PR 91-03, pp. 365-370, (1992), coauthor

5. "Properties of Gas-Source Iodine-Doped CdTe and HgCdTe Layers," to be published in J. Vac. Sci. Technol., coauthor

6. "Selected Area Epitaxy of CdTe," J. Vac. Sci. Technol. B10, (4), pp. 1415-1417, (1992), coauthor

7. "Chemical Beam Epitaxy of HgCdTe," Semicond. Sci. Technol. 6, pp. C10-C14, (1991), coauthor

8. "Metalorganic Molecular Beam Epitaxy of II-VI Materials," SPIE Proceedings, Infrared and Optoelectronic Materials and Devices 1512, pp. 170-176, (1991), coauthor

9. "Analysis and Calibration of the Flow Characteristics of a Pressure Controlled Vapor Source for Gas Source Doping," Mater. Res. Soc. Symp. Proc. 222, pp. 273-278, (1991), coauthor

10. "Characterization of CdTe and HgCdTe Grown by Chemical Beam Epitaxy," J. Vac. Sci. Technol. B9, (3), pp. 1656-1660, (1991)

11. "Molecular Beam Epitaxial Growth of CdTe and Hg1-xCdxTe for New Infrared and Optoelectronic Devices," Ph.D. Thesis, Georgia Institute of Technology, 1991

12. "The Avalanche Heterostructure and Superlattice Solar Cell," to be published in SERI Photovoltaic Program Branch FY 1990 Annual Report, coauthor

13. “Chemical beam Epitaxy of CdTe, HgTe, and HgCdTe," J. Crystal Growth 111, pp. 725-729, (1991), coauthor

14. "The Avalanche Heterostructure and Superlattice Solar Cell," SERI Photovoltaic Program Branch FY 1989 Annual Report, pp. 191-197, (1990), coauthor

15. "Growth of CdTe and Hg-Based Alloys by Chemical Beam Epitaxy," J. Vac. Sci. Technol. A8, (2), pp. 1020-1024, (1990), coauthor

16. "In-situ Growth Surface Temperature Measurement for Molecular Beam Epitaxial Growth of CdTe, ZnTe and Cd1-xZnxTe Alloys," J. Vac. Sci. Technol. A8, (2), pp. 102-105, (1990), coauthor

17. "Dopant Profile Studies in Molecular Beam Epitaxially Grown CdTe," submitted to J. Vac. Sci. Technol., coauthor

18. “In-situ Calibration of Growth Surface Temperature for Molecular Beam Epitaxy of CdTe," J. Vac. Sci. Technol. B8, (2), pp. 192-195, (1990), coauthor

19. "Chemical Beam Epitaxy for II-VI Solar Cell Materials," Proc. of the SERI Polycrystalline Thin Film Program Meeting, pp. 99-101, 1989, coauthor

20. "Properties of Undoped and Sb-Doped CdTe Surfaces Prepared by Conventional and Photo-Assisted Molecular Beam Epitaxy," J. Crystal Growth 95, pp. 543-546, (1989), coauthor

21. "A New Fast-Response Hg Vapor Source for HgCdTe Molecular-Beam Epitaxy Growth," J. Vac. Sci. Technol. A7, (2), pp. 295-299, 1989

22. "New Techniques for the Growth of HgCdTe by Molecular Beam Epitaxy," SPIE Proceedings, Future Infrared Detector Materials 1106, pp. 2-18, (1989), coauthor

23. "Molecular Beam Epitaxial Growth and Characterization of ZnTe and CdTe on (001) GaAs," J. Crystal Growth 86, pp. 296-302, 1988

24. "The Variably Spaced Superlattice Energy Filter," Superlatt. and Microstructures 3, (2), pp. 147-152, (1987), coauthor

25. "Absorption of Sb on CdTe Surfaces," Bull. Am. Phys. Soc. 31, (52), (1986), coauthor

26. "Surface Stoichiometry and Reaction Kinetics of Molecular Beam Epitaxially Grown (001) CdTe Surfaces," App. Phys. Lett. 49, (16), pp. 1034-1036, (1986), coauthor

27. "MBE Growth and CdTe and ZnCdTe on GaAs Substrates," SPIE 659 (Materials Technologies for IR Detectors), pp. 153-160, (1986), coauthor

28. "A Sensitivity Analysis of a Schottky Barrier Solar Cell Using the Flux Method," Senior Thesis, Penn State, 1984