Control of SAG-GaN at the Nanoscale

Elias Semlali, Evelyne Gil, Geoffrey Avit, Yamina André, Arthur Sauvagnat, Jihen Jridi, Andriy V. Moskalenko, Philip A. Shields, Névine Rochat, Adeline Grenier, Agnès Trassoudaine

Research output: Contribution to journalArticlepeer-review

Abstract

Selective area growth (SAG) of GaN nanowires was performed on GaN on c-plane sapphire templates masked with SiN using hydride vapor phase epitaxy (HVPE). GaN nanowires exhibited various morphologies, discussed as a function of the pattern design, the partial pressure of the Ga gaseous precursor, the composition of the carrier gas, and the growth temperature. The morphologies are elucidated by involving a comparative study of growth rates of facets relative to each other. CL measurements showed high emission quality for GaN nanowires grown at 930 °C. This work places HVPE as an effective epitaxial technique for growing III-N nanostructure-based devices at a low cost.

Original languageEnglish
Pages (from-to)8907-8913
Number of pages7
JournalCrystal Growth and Design
Volume24
Issue number21
Early online date9 Oct 2024
DOIs
Publication statusPublished - 6 Nov 2024

Funding

FundersFunder number
Agence Nationale de la Recherche
European Commission
Région Auvergne RhôneDRV_PIP_2021–252_IP_NANOSPRING
Engineering and Physical Sciences Research CouncilEP/V055224/1
Engineering and Physical Sciences Research Council
International Research CenterCAP 20–25
GaNeXTANR-11-LABX-0014
LabEx IMobS3ANR-10-LABX-16–01

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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