skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Strain-induced structural defects and their effects on the electrochemical performances of silicon core/germanium shell nanowire heterostructures

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/C6NR07681E· OSTI ID:1345930

Here we report on strain-induced structural defect formation in core Si nanowire of Si/Ge core/shell nanowire heterostructure and influences of the structural defects on the electrochemical performances in lithium-ion battery anodes based on Si/Ge core/shell nanowire heterostructures. The induced structural defects consisting of stacking faults and dislocations in the core Si nanowire were observed for the first time. The generation of stacking faults in Si/Ge core/shell nanowire heterostructure is observed to prefer settling in either only Ge shell region or in both Ge shell and Si core regions and is associated with the increase of the shell volume fraction. The relax of misfit strain in [112] oriented core/shell nanowire heterostructure leads to subsequent gliding of Shockley partial dislocations, preferentially forming the twins. The observation of cross-over defect formation is of great importance for the understanding of heteroepitaxy in radial heterostructures at nanoscale and building the three dimensional heterostructures for the various applications. In addition, the effect of the defect formation on nanomaterial’s functionality is investigated by electrochemical performance test. The Si/Ge core/shell nanowire heterostructures enhance the gravimetric capacity of lithium ion battery anodes under fast charging/discharging rates compared to Si nanowires. However, the induced structural defects hamper lithiation of the Si/Ge core/shell nanowire heterostructure.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-06NA25396; AC04-94AL85000
OSTI ID:
1345930
Report Number(s):
LA-UR-16-23503
Journal Information:
Nanoscale, Vol. 9, Issue 3; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

References (51)

Core/Multishell Nanowire Heterostructures as Multicolor, High-Efficiency Light-Emitting Diodes journal November 2005
Picosecond response times in GaAs/AlGaAs core/shell nanowire-based photodetectors journal June 2011
Core–Shell Heterojunction of Silicon Nanowire Arrays and Carbon Quantum Dots for Photovoltaic Devices and Self-Driven Photodetectors journal March 2014
Demonstration of Confined Electron Gas and Steep-Slope Behavior in Delta-Doped GaAs-AlGaAs Core–Shell Nanowire Transistors journal April 2015
Kinetics and fracture resistance of lithiated silicon nanostructure pairs controlled by their mechanical interaction journal June 2015
Cracking the Si Shell Growth in Hexagonal GaP-Si Core–Shell Nanowires journal April 2015
Potentiostatic Intermittent Titration Technique for Electrodes Governed by Diffusion and Interfacial Reaction journal December 2011
Dislocation reduction in heteroepitaxial Ge on Si using SiO 2 lined etch pits and epitaxial lateral overgrowth journal September 2011
Anisotropic Swelling and Fracture of Silicon Nanowires during Lithiation journal August 2011
Engineering Heteromaterials to Control Lithium Ion Transport Pathways journal December 2015
Multi-scale simulation of lithium diffusion in the presence of a 30° partial dislocation and stacking fault in Si journal January 2014
Integrated Photonic Platform Based on InGaN/GaN Nanowire Emitters and Detectors journal May 2014
Direct Measurement of Coherency Limits for Strain Relaxation in Heteroepitaxial Core/Shell Nanowires journal October 2012
An analytical model for the critical shell thickness in core/shell nanowires based on crystallographic slip journal November 2013
Solar Water Splitting by TiO 2 /CdS/Co-Pi Nanowire Array Photoanode Enhanced with Co-Pi as Hole Transfer Relay and CdS as Light Absorber journal August 2015
Misfit dislocations in nanowire heterostructures journal January 2010
A III–V nanowire channel on silicon for high-performance vertical transistors journal August 2012
Germanium Silicon Alloy Anode Material Capable of Tunable Overpotential by Nanoscale Si Segregation journal May 2015
Coaxial Multishell (In,Ga)As/GaAs Nanowires for Near-Infrared Emission on Si Substrates journal April 2014
Measurement of the displacement field of dislocations to 0.03 Å by electron microscopy journal May 2003
Critical shell thickness for InAs-Al x In 1− x As(P) core-shell nanowires journal December 2012
Determination of the Kinetic Parameters of Mixed-Conducting Electrodes and Application to the System Li[sub 3]Sb journal January 1977
Mechanics of Crystalline Nanowires journal March 2009
Vertically aligned TiO2/(CdS, CdTe, CdSTe) core/shell nanowire array for photoelectrochemical hydrogen generation journal April 2015
Strain relaxation kinetics in Si 1− x Ge x /Si heterostructures journal August 1991
Calculation of critical dimensions for wurtzite and cubic zinc blende coaxial nanowire heterostructures
  • Raychaudhuri, S.; Yu, E. T.
  • Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, Vol. 24, Issue 4 https://doi.org/10.1116/1.2216715
journal January 2006
Dislocation dissociation and stacking-fault energies in Ge 1-x Si x alloys journal April 2000
GaN/In1−xGaxN/GaN/ZnO nanoarchitecture light emitting diode microarrays journal May 2009
Shell Thickness Dependent Photocatalytic Properties of ZnO/CdS Core–Shell Nanorods journal October 2012
Mass-scalable synthesis of 3D porous germanium–carbon composite particles as an ultra-high rate anode for lithium ion batteries journal January 2015
Twin Plane Re-entrant Mechanism for Catalytic Nanowire Growth journal February 2014
The effect of metal silicide formation on silicon nanowire-based lithium-ion battery anode capacity journal May 2012
Geometric limits of coherent III-V core/shell nanowires journal August 2013
Hierarchical TiO 2 –CuInS 2 core–shell nanoarrays for photoelectrochemical water splitting journal January 2014
Lamellar Twinning in Semiconductor Nanowires journal January 2007
Crystalline ZnO/ZnS x Se 1−x core–shell nanowire arrays for efficient visible-light photoelectrocatalysis journal January 2014
Reduced pressure chemical vapor deposition of Ge thick layers on Si(001), Si(011) and Si(111) journal December 2008
Monolithic GaAs/InGaP nanowire light emitting diodes on silicon journal June 2008
Visible light driven type II heterostructures and their enhanced photocatalysis properties: a review journal January 2013
Comparison between potentiostatic and galvanostatic intermittent titration techniques for determination of chemical diffusion coefficients in ion-insertion electrodes journal July 2005
Facet-Selective Nucleation and Conformal Epitaxy of Ge Shells on Si Nanowires journal October 2015
Misfit Strain Relaxation Mechanisms in Core/Shell Nanowires journal September 2012
Bending-Induced Symmetry Breaking of Lithiation in Germanium Nanowires journal July 2014
Asymmetric relaxation of SiGe∕Si(110) investigated by high-resolution x-ray diffraction reciprocal space mapping journal October 2006
Experimental Quantification of Resolved Shear Stresses for Dislocation Motion in TiN journal June 2015
Structural Changes in Silicon Anodes during Lithium Insertion/Extraction journal January 2004
Novel relaxation process in strained Si/Ge superlattices grown on Ge (001) journal October 1990
Mapping of Strain Fields in GaAs/GaAsP Core–Shell Nanowires with Nanometer Resolution journal November 2015
Strain relaxation kinetics in Si1−xGex/Si heterostructures journal July 1989
Novel relaxation process in strained Si/Ge superlattices grown on Ge (001) text January 1990
Critical shell thickness for InAs-Al$_x$In$_{1-x}$As(P) core-shell nanowires text January 2012

Cited By (3)

Structural Strategies for Germanium‐Based Anode Materials to Enhance Lithium Storage journal August 2019
Degradation of Si/Ge core/shell nanowire heterostructures during lithiation and delithiation at 0.8 and 20 A g −1 journal January 2018
A review on silicon nanowire-based anodes for next-generation high-performance lithium-ion batteries from a material-based perspective journal January 2020

Similar Records

Synthesis And Strain Relaxation of Ge-Core/Si-Shell Nanowire Arrays
Journal Article · Mon May 18 00:00:00 EDT 2009 · Nano Lett. 8:4081,2008 · OSTI ID:1345930

Degradation of Si/Ge core/shell nanowire heterostructures during lithiation and delithiation at 0.8 and 20 A g-1
Journal Article · Wed Mar 28 00:00:00 EDT 2018 · Nanoscale · OSTI ID:1345930

Effect of compressive and tensile strain on misfit dislocation injection in SiGe epitaxial layers
Journal Article · Sat May 01 00:00:00 EDT 1993 · Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena · OSTI ID:1345930