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Effects of growth t...
Effects of growth temperature and thermal annealing on optical quality of GaNAs nanowires emitting in the near-infrared spectral range
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- Stehr, Jan Eric, 1981- (author)
- Linköpings universitet,Ytors Fysik och Kemi,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Balagula, Roman (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Jansson, Mattias, 1989- (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Yukimune, M (author)
- Ehime University, Matsuyama, Japan
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- Fujiwara, R (author)
- Ehime University, Matsuyama, Japan
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- Ishikawa, Fumitaro (author)
- Ehime University, Matsuyama, Japan
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- Chen, Weimin, 1959- (author)
- Linköpings universitet,Ytors Fysik och Kemi,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Buyanova, Irina A, 1960- (author)
- Linköpings universitet,Ytors Fysik och Kemi,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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(creator_code:org_t)
- 2019-11-13
- 2020
- English.
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In: Nanotechnology. - : Institute of Physics Publishing (IOPP). - 0957-4484 .- 1361-6528. ; 31:6
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Abstract
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- We report on optimization of growth conditions of GaAs/GaNAs/GaAs core/shell/shell nanowire (NW) structures emitting at ~1 μm, aiming to increase their light emitting efficiency. A slight change in growth temperature is found to critically affect optical quality of the active GaNAs shell and is shown to result from suppressed formation of non-radiative recombination (NRR) centers under the optimum growth temperature. By employing the optically detected magnetic resonance spectroscopy, we identify gallium vacancies and gallium interstitials as being among the dominant NRR defects. The radiative efficiency of the NWs can be further improved by post-growth annealing at 680 °C, which removes the gallium interstitials.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Stehr, Jan Eric, ...
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Balagula, Roman
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Jansson, Mattias ...
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Yukimune, M
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Fujiwara, R
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Ishikawa, Fumita ...
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show more...
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Chen, Weimin, 19 ...
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Buyanova, Irina ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Nanotechnology
- By the university
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Linköping University