Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

The high pressure phase transformation behavior of silicon nanowires

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.5048033· OSTI ID:1474160
Si nanowires of 80–150 nm and 200–250 nm diameter are pressurized up to 22 GPa using a diamond anvil cell. Raman and x-ray diffraction data were collected during both compression and decompression. Electron microscopy images reveal that the nanowires retain a nanowire-like morphology (after high pressure treatment). On compression, dc-Si was observed to persist at pressures up to 19 GPa compared to ~11 GPa for bulk-Si. On decompression, the metallic β-Sn phase was found to be more stable for Si nanowires compared with bulk-Si when lowering the pressure and was observed as low as 6 GPa. For the smallest nanowires studied (80–150 nm), predominately a-Si was obtained on decompression, whereas for larger nanowires (200–250 nm), clear evidence for the r8/bc8-Si phase was obtained. We suggest that the small volume of the individual Si nanowires compared with bulk-Si inhibits the nucleation of the r8-Si phase on decompression. This study shows that there is a size dependence in the high pressure behavior of Si nanowires during both compression and decompression.
Research Organization:
Advanced Photon Source (APS), Argonne National Laboratory (ANL), Argonne, IL (US)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357; FG02-94ER14466; FG02-99ER45775; NA0001974
OSTI ID:
1474160
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 12 Vol. 113; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (35)

Effect of Pressure on Raman Spectra of Metastable Phases of Si and Ge journal January 1999
Semiconductor Nanowires journal May 2007
Springer Handbook of Nanomaterials book January 2013
Raman scattering in hydrogenated amorphous silicon under high pressure journal April 1982
Cubic to Tetragonal Phase Transformation in Cold-Compressed Pd Nanocubes journal March 2008
Anomalous Piezoresistance Effect in Ultrastrained Silicon Nanowires journal August 2010
Phase Transition and Compressibility in Silicon Nanowires journal September 2008
Effect of phase transformations on the shape of the unloading curve in the nanoindentation of silicon journal April 2000
An Optical Fluorescence System for Quantitative Pressure Measurement in the Diamond‐Anvil Cell journal January 1973
Vapor-liquid-solid mechanism of single crystal growth journal March 1964
Room temperature writing of electrically conductive and insulating zones in silicon by nanoindentation journal January 2011
The wurtzite to rock salt structural transformation in CdSe nanocrystals under high pressure journal March 1995
Temperature-dependent mechanical deformation of silicon at the nanoscale: Phase transformation versus defect propagation journal May 2015
Semiconductor nanowires journal October 2006
High pressure Raman scattering of silicon nanowires journal March 2011
Crystal data for high-pressure phases of silicon journal October 1986
New high-pressure phase of Si journal April 1993
Theoretical study of high-pressure orthorhombic silicon journal December 1993
Reversible pressure-induced structural transitions between metastable phases of silicon journal November 1994
Pressure dependence of the Imma phase of silicon journal July 1994
Structure and properties of silicon XII: A complex tetrahedrally bonded phase journal August 1995
Electronic Properties of Complex Crystalline and Amorphous Phases of Ge and Si. I. Density of States and Band Structures journal March 1973
Compression curves of transition metals in the Mbar range: Experiments and projector augmented-wave calculations journal September 2008
Ab initio study of the optical properties of Si-XII journal October 2008
Size-Dependent Amorphization of Nanoscale Y 2 O 3 at High Pressure journal August 2010
BC8 Silicon (Si-III) is a Narrow-Gap Semiconductor journal April 2017
Raman scattering in metallic Si and Ge up to 50 GPa journal April 1992
Pressure-Induced Structural Transformations in Si Nanocrystals: Surface and Shape Effects journal June 1996
High-pressure phases of group-IV, III–V, and II–VI compounds journal July 2003
The crystal structures of new forms of silicon and germanium journal June 1964
Two New Forms of Silicon journal January 1963
Two New Forms of Silicon journal January 1963
Crystal Structures at High Pressures of Metallic Modifications of Silicon and Germanium journal February 1963
Pressure-Induced Structural Phase Transformations in Silicon Nanowires journal May 2005
Mechanical deformation in silicon by micro-indentation journal May 2001