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RAP opportunity at Air Force Science and Technology Fellowship Program     AF STFP

Thin Film Growth and Characterization of Group-IV Materials for Low Cost Infrared Detectors


Sensors Directorate, RY/Sensors Division

opportunity location
13.35.01.C0563 Wright-Patterson AFB, OH 454337542


name email phone
Bruce B Claflin 937.713.8740


     The goal of this research project is to develop Si1-x-yGexSny for sensor applications: 1) remote sensing applications such as IR countermeasures, remote hyperspectral imaging, and high sensitivity chemical/biological weapons detection; 2) as a potential broad NIR, MWIR, and LWIR detector material for use in laser RADAR; 3) as a CMOS-compatible material for development of electro-optic integrated circuits (EOIC) including smart pixels for advanced focal plane arrays (FPAs); and 4) for free-space optical communication.

     The large size difference of the group IV elements Si, Ge, and Sn presents unique challenges which require the development of a new approach to allow synthesis of Sn containing alloys over a broad range of composition. Achieving this goal will require substantial effort in process development. Investigation of the gas phase chemistry and associated growth kinetics will provide a fundamental understanding of the surface physics and reaction chemistry involved in this process. Synthesis will be closely coupled with characterization of the basic structural, surface, electrical and optical properties of the resulting films to inform the growth optimization process.

G. Grzybowski, M. E. Ware, A. Kiefer, B. Claflin, J. Vac. Sci. Tech. B, DOI: 10.1116/6.0000406 (2020)

B. Claflin, G. J. Grzybowski, M. E. Ware, S. Zollner, and A. M. Kiefer, Front. Mater. 7:44.doi: 10.3389/fmats.2020.00044 (2020).

B. Wang, Z-Q. Fang, B. Claflin, D. Look, J. Kouvetakis, Y. K. Yeo, Thin Solid Films 654, 77 (2018).

key words
Semiconductor; Thin Film; Growth; Group-IV alloy; GeSiSn; GeSn; Characterization; X-ray photoelectron spectroscopy (XPS); Chemical Vapor Deposition (CVD);


Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral and Senior applicants


Base Stipend Travel Allotment Supplementation
$95,000.00 $5,000.00

Experience Supplement:
Postdoctoral and Senior Associates will receive an appropriately higher stipend based on the number of years of experience past their PhD.

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