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Inhomogeneous spatial distribution of non radiative recombination centers in GaN/InGaN nanowire heterostructures studied by cathodoluminescence.
Concordel, Alexandre; Rochat, Névine; Quach, Anh My Naht; Rouvière, Jean-Luc; Jacopin, Gwénolé; Napierala, Jérôme; Daudin, Bruno.
Afiliação
  • Concordel A; Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS, NPSC, 17 av. des Martyrs, 38000 Grenoble, France.
  • Rochat N; Univ. Grenoble Alpes, CEA, LETI, 17 rue des martyrs, 38000 Grenoble, France.
  • Quach AMN; Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS, NPSC, 17 av. des Martyrs, 38000 Grenoble, France.
  • Rouvière JL; Univ. Grenoble Alpes, Grenoble INP, CEA, IRIG-MEM, LEMMA, 17 rue des martyrs, 38000 Grenoble, France.
  • Jacopin G; Univ. Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, 38000 Grenoble, France.
  • Napierala J; ALEDIA, 10 Rue des Méridiens, 38130 Échirolles, France.
  • Daudin B; Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS, NPSC, 17 av. des Martyrs, 38000 Grenoble, France.
Nanotechnology ; 34(49)2023 Sep 18.
Article em En | MEDLINE | ID: mdl-37640021
In order to elucidate the mechanisms responsible for cathodoluminescence intensity variations at the scale of single InGaN/GaN nanowire heterostructures, a methodology is proposed based on a statistical analysis on ensembles of several hundreds of nanowires exhibiting a diameter of 180, 240 and 280 nm. For 180 nm diameter, we find that intensitiy variations are consistent with incorporation of point defects obeying Poisson's statistics. For wider diameters, intensity variations at the scale of single NWs are observed and assigned to local growth conditions fluctuations. Finally, for the less luminescent nanowires, a departure from Poisson's statistics is observed suggesting the possible clustering of non independent point defects.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article