Relaxation of asymmetric crystallographic tilt: In situ x-ray diffraction studies of epitaxial electrodeposition of bismuth on GaAs (110)
Journal Article
·
· Journal of Applied Physics
- Cornell Univ., Ithaca, NY (United States). School of Applied and Engineering Physics; Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source (CHESS); DOE/OSTI
- Univ. Autónoma de Madrid, Madrid (Spain). Dept. de Física de la Materia Condensada
- Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source (CHESS)
- Cornell Univ., Ithaca, NY (United States). Dept. of Chemistry and Chemical Biology
- Cornell Univ., Ithaca, NY (United States). School of Applied and Engineering Physics; Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source (CHESS)
High quality, epitaxial thin-films are key components of almost all modern electronic devices. During deposition, lattice mismatch between the substrate and the film generates elastic strain. The strain energy grows with film thickness until a defect is generated that relieves the strain. The strain relaxation mechanism is critical in epitaxial electrodeposition. Here, we study how a metal (bismuth) film growing via electrodeposition on a semiconductor substrate [GaAs(110)] relaxes the lattice mismatch-induced strain. Using in situ synchrotron-based X-ray techniques, we monitor the crystallographic orientation and grain size of the growing film during electrochemical deposition. We (1) confirm that a single crystallographic orientation of the film, with ($$01\bar{1}8$$) as the oriented plane, can be selected by controlling the overpotential, η, and (2) find that, after a threshold thickness is reached, the tilt angle varies monotonically with film thickness. Our data are consistent with the film relaxing the strain by forming low-energy, asymmetric tilt boundaries.
- Research Organization:
- Cornell Univ., Ithaca, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Materials Center at Cornell (EMC2)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0001086
- OSTI ID:
- 1540195
- Alternate ID(s):
- OSTI ID: 1460499
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 3 Vol. 124; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Underpotential‐Assisted Electrodeposition of Highly Crystalline and Smooth Thin Film of Bismuth
|
journal | December 2019 |
Similar Records
Spatially resolved distribution of dislocations and crystallographic tilts in GaN layers grown on Si(111) substrates by maskless cantilever epitaxy
Spatially resolved distribution of dislocations and crystallographic tilts in GaN layers grown on Si(111) substrates by maskless cantilever epitaxy
Journal Article
·
Sat Dec 31 23:00:00 EST 2005
· Journal of Applied Physics
·
OSTI ID:1003316
Spatially resolved distribution of dislocations and crystallographic tilts in GaN layers grown on Si(111) substrates by maskless cantilever epitaxy
Journal Article
·
Fri Sep 01 00:00:00 EDT 2006
· Journal of Applied Physics
·
OSTI ID:20884676