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X-ray Bragg Ptychog...
X-ray Bragg Ptychography on a Single InGaN/GaN Core-Shell Nanowire
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- Dzhigaev, Dmitry (författare)
- German Electron Synchrotron (DESY)
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- Stankevič, Tomaš (författare)
- Niels Bohr Institute
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- Bi, Zhaoxia (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Lazarev, Sergey (författare)
- German Electron Synchrotron (DESY),Tomsk Polytechnic University
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- Rose, Max (författare)
- German Electron Synchrotron (DESY)
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- Shabalin, Anatoly (författare)
- German Electron Synchrotron (DESY)
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- Reinhardt, Juliane (författare)
- German Electron Synchrotron (DESY)
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- Mikkelsen, Anders (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Samuelson, Lars (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Falkenberg, Gerald (författare)
- German Electron Synchrotron (DESY)
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- Feidenhans'l, Robert (författare)
- Niels Bohr Institute
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- Vartanyants, Ivan A. (författare)
- German Electron Synchrotron (DESY),National Research Nuclear University MEPhI
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(creator_code:org_t)
- 2017-03-20
- 2017
- Engelska 7 s.
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Ingår i: ACS Nano. - : American Chemical Society (ACS). - 1936-0851 .- 1936-086X. ; 11:7, s. 6605-6611
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The future of solid-state lighting can be potentially driven by applications of InGaN/GaN core-shell nanowires. These heterostructures provide the possibility for fine-tuning of functional properties by controlling a strain state between mismatched layers. We present a nondestructive study of a single 400 nm-thick InGaN/GaN core-shell nanowire using two-dimensional (2D) X-ray Bragg ptychography (XBP) with a nanofocused X-ray beam. The XBP reconstruction enabled the determination of a detailed three-dimensional (3D) distribution of the strain in the particular nanowire using a model based on finite element method. We observed the strain induced by the lattice mismatch between the GaN core and InGaN shell to be in the range from -0.1% to 0.15% for an In concentration of 30%. The maximum value of the strain component normal to the facets was concentrated at the transition region between the main part of the nanowire and the GaN tip. In addition, a variation in misfit strain relaxation between the axial growth and in-plane directions was revealed.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Bragg ptychography
- Finite Element Method
- GaN
- InGaN
- nanowire
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Dzhigaev, Dmitry
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Stankevič, Tomaš
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Bi, Zhaoxia
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Lazarev, Sergey
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Rose, Max
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Shabalin, Anatol ...
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visa fler...
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Reinhardt, Julia ...
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Mikkelsen, Ander ...
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Samuelson, Lars
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Falkenberg, Gera ...
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Feidenhans'l, Ro ...
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Vartanyants, Iva ...
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