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Diameter-dependent morphology of vapour-solid-solid grown ZnSe nanowires (Articolo in rivista)

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Diameter-dependent morphology of vapour-solid-solid grown ZnSe nanowires (Articolo in rivista) (literal)

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Alternative label

Zannier V.[ 1,2 ]; Grillo V.[ 3,4 ]; Rubini S.[ 1 ] (2014)
Diameter-dependent morphology of vapour-solid-solid grown ZnSe nanowires
in Journal of physics. D, Applied physics (Print); IOP PUBLISHING LTD, BRISTOL, BS1 6NX (Regno Unito)
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[ 1 ] IOM CNR Lab TASC, I-34149 Trieste, Italy [ 2 ] Univ Trieste, Dept Phys, I-34127 Trieste, Italy [ 3 ] CNR, IMEM, I-43010 Parma, Italy [ 4 ] CNR, NANO S3, I-41125 Modena, Italy (literal)

Titolo

Diameter-dependent morphology of vapour-solid-solid grown ZnSe nanowires (literal)

Abstract

We report on the growth of ZnSe nanowires by molecular beam epitaxy using solid Au nanoparticles as growth seeds. We show that nanowires with diameter below 15 nm are reproducibly straight, while thicker nanowires display a 'worm-like' morphology characterized by multiple kinks. This size-dependent morphology does not depend on growth parameters such as substrate temperature, Zn/Se pressure ratio or substrate chemistry, but we believe it is related to the solid state of the metal seed driving the nanowire growth. We finally propose three alternative methods to selectively obtain thin, straight and oriented ZnSe nanowires on GaAs(1 1 1)B. (literal)

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