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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Heinz, D.
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Publications (7/7 displayed)
- 2019A borehole investigation of zircon radiation damage annealingcitations
- 2017Evaluation of Alkali Silica Reaction in Fly Ash Concrete Using an Accelerated Performance Test Method
- 2016Composition analysis of coaxially grown InGaN multi quantum wells using scanning transmission electron microscopy
- 2016The Role of Aluminium in C-A-S-H during Chemical Attack on Concrete
- 2014Susceptibility of Fly Ash Concrete to Damaging Alkali Silica Reaction - Performance Testing Conditions
- 2014Damaging ASR in Fly Ash Concrete Exposed to NaCl - Concrete with Borosilicate Glass and Greywacke
- 2013Ultra-High Performance Concrete Mixes with Ruduced Portland Cement Content.
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article
Composition analysis of coaxially grown InGaN multi quantum wells using scanning transmission electron microscopy
Abstract
<jats:p>GaN nanotubes with coaxial InGaN quantum wells were analyzed by scanning transmission electron microscopy in order to determine their structural properties as well as the indium distribution across the InGaN quantum wells. For the latter, two process steps are necessary. First, a technique to prepare cross-sectional slices out of the nanotubes has been developed. Second, an existing scanning transmission electron microscopy analysis technique has been extended with respect to the special crystallographic orientation of this type of specimen. In particular, the shape of the nanotubes, their defect structure, and the incorporation of indium on different facets were investigated. The quantum wells preferentially grow on m-planes of the dodecagonally shaped nanotubes and on semipolar top facets while no significant indium signal was found on a-planes. An averaged indium concentration of 6% to 7% was found by scanning transmission electron microscopy analysis and could be confirmed by cathodoluminescence measurements.</jats:p>