An instrument for in situ coherent x-ray studies of metal-organic vapor phase epitaxy of III-nitrides
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Northern Illinois Univ., DeKalb, IL (United States)
- Fairview Assoc., Jackson, WY (United States)
Here, we describe an instrument that exploits the ongoing revolution in synchrotron sources, optics, and detectors to enable in situ studies of metal-organic vapor phase epitaxy (MOVPE) growth of III-nitride materials using coherent x-ray methods. The system includes high-resolution positioning of the sample and detector including full rotations, an x-ray transparent chamber wall for incident and diffracted beam access over a wide angular range, and minimal thermal sample motion, giving the sub-micron positional stability and reproducibility needed for coherent x-ray studies. The instrument enables surface x-ray photon correlation spectroscopy, microbeam diffraction, and coherent diffraction imaging of atomic-scale surface and film structure and dynamics during growth, to provide fundamental understanding of MOVPE processes.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Materials Sciences and Engineering Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1353038
- Alternate ID(s):
- OSTI ID: 1373969
- Journal Information:
- Review of Scientific Instruments, Vol. 88, Issue 3; ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Coherent X-ray spectroscopy reveals the persistence of island arrangements during layer-by-layer growth
|
journal | March 2019 |
FORTE – a multipurpose high-vacuum diffractometer for tender X-ray diffraction and spectroscopy at the SIRIUS beamline of Synchrotron SOLEIL
|
journal | May 2019 |
Dynamics of Atomic Steps on GaN (0001) during Vapor Phase Epitaxy | preprint | January 2020 |
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