Suitability of Au- and self-assisted GaAs nanowires for optoelectronic applications.
Nano Lett
; 11(3): 1276-9, 2011 Mar 09.
Article
en En
| MEDLINE
| ID: mdl-21319838
ABSTRACT
The incorporation of Au during vapor-liquid-solid nanowire growth might inherently limit the performance of nanowire-based devices. Here, we assess the material quality of Au-assisted and Au-free grown GaAs/(Al,Ga)As core-shell nanowires using photoluminescence spectroscopy. We show that at room temperature, the internal quantum efficiency is systematically much lower for the Au-assisted nanowires than for the Au-free ones. In contrast, the optoelectronic material quality of the latter is comparable to that of state-of-the-art planar double heterostructures.
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MEDLINE
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En
Revista:
Nano Lett
Año:
2011
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Article
País de afiliación:
Alemania