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Opportunity at Air Force Research Laboratory (AFRL)

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

Location

Sensors Directorate, RY/Sensors Division

RO# Location
13.35.01.C0563 Wright-Patterson AFB, OH 454337542

Advisers

name email phone
Claflin, Bruce B bruce.claflin.1@us.af.mil 937.713.8740

Description

     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).

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

Eligibility

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

Stipend

Base Stipend Travel Allotment Supplementation
$76,542.00 $4,000.00

$3,000 Supplement for Doctorates in Engineering & Computer Science

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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