Lattice constant and substitutional composition of GeSn alloys grown by molecular beam epitaxy
- Department of Electrical and Computer Engineering, University of Delaware, Newark, Delaware 19716 (United States)
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854 (United States)
Single crystal epitaxial Ge{sub 1−x}Sn{sub x} alloys with atomic fractions of tin up to x = 0.145 were grown by solid source molecular beam epitaxy on Ge (001) substrates. The Ge{sub 1−x}Sn{sub x} alloys formed high quality, coherent, strained layers at growth temperatures below 250 °C, as shown by high resolution X-ray diffraction. The amount of Sn that was on lattice sites, as determined by Rutherford backscattering spectrometry channeling, was found to be above 90% substitutional in all alloys. The degree of strain and the dependence of the effective unstrained bulk lattice constant of Ge{sub 1−x}Sn{sub x} alloys versus the composition of Sn have been determined.
- OSTI ID:
- 22218302
- Journal Information:
- Applied Physics Letters, Vol. 103, Issue 4; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
B-doped fully strained Si{sub 1{minus}{ital x}}Ge{sub {ital x}} layers grown on Si(001) by gas-source molecular beam epitaxy from Si{sub 2}H{sub 6}, Ge{sub 2}H{sub 6}, and B{sub 2}H{sub 6}: Charge transport properties
Ge/GeSn heterostructures grown on Si (100) by molecular-beam epitaxy
Above-bandgap optical properties of biaxially strained GeSn alloys grown by molecular beam epitaxy
Journal Article
·
Tue Oct 01 00:00:00 EDT 1996
· Journal of Applied Physics
·
OSTI ID:22218302
+1 more
Ge/GeSn heterostructures grown on Si (100) by molecular-beam epitaxy
Journal Article
·
Thu Jan 15 00:00:00 EST 2015
· Semiconductors
·
OSTI ID:22218302
+2 more
Above-bandgap optical properties of biaxially strained GeSn alloys grown by molecular beam epitaxy
Journal Article
·
Mon Jan 13 00:00:00 EST 2014
· Applied Physics Letters
·
OSTI ID:22218302
+1 more