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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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Hawkridge, M.
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Publications (5/5 displayed)
- 2011Structural defects and cathodoluminescence of InxGa1-xN layerscitations
- 2010Non-equilibrium GaNAs alloys with band gap ranging from 0.8-3.4 eVcitations
- 2010Molecular beam epitaxy of GaNAs alloys with high As content for potential photoanode applications in hydrogen productioncitations
- 2009Structural perfection of InGaN layers and its relation to photoluminescencecitations
- 2009Spontaneous stratification of InGaN layers and its influence on optical propertiescitations
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article
Non-equilibrium GaNAs alloys with band gap ranging from 0.8-3.4 eV
Abstract
A new alloy system, the GaN<sub>1-x</sub>As<sub>x</sub> alloys in the whole composition range was successfully synthesized using the non-equilibrium low temperature molecular beam epitaxy method. The alloys are amorphous in the composition range of 0.17 <x <0.75 and crystalline outside this region. The amorphous films have smooth morphology, homogeneous composition and sharp, well defined optical absorption edges. The bandgap energy varies in a broad energy range from ∼3.4 eV in GaN to∼0.8 eV at x∼0.85. The reduction of the band gap can be attributed primarily to the downward movement of the conduction band for alloys with x > 0.2, and to the upward movement of the valence band for alloys with x <0.2. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA.