Investigating the Secondary Electron Emission of Nanomaterials Induced by a High‐Resolution Proton Beam - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue physica status solidi (b) Année : 2022

Investigating the Secondary Electron Emission of Nanomaterials Induced by a High‐Resolution Proton Beam

Résumé

In this article the Secondary Electron Emission (SEE) from 1-dimensional (1D) nanomaterials in the form of nanorods are investigated. The small beam of a 1.5 MeV + H2 hydrogen with a sub 70 nm in diameter allowed studying the SEE with a very high resolution. A wide range of nanomaterials from various laboratories were studied, including thin ZnO and ZnO/GaN nanostructures grown on 1 µm thick Si3N4 membranes and thick InP, GaN and GaN/AlN nanorod structures grown on bulk Si substrates. By virtue of the small size of the exciting nanobeams, high resolution maps could be created presenting an SEE yield from various parts of the structures. This allowed us to show that the top parts of nanorods in ZnO, ZnO/GaN, GaN, InP and GaN/AlN nanostructures emit secondary electrons much more efficiently than the valley areas between nanorods. These results indicate that by a proper design and growth of 1D nanostructures, SEE properties could be improved over those of the traditionally used Au and CsI thin films. This work has been undertaken to find materials with the highest achievable SEE emission, which is a figure of merit for the detection efficiency relevant for the development and application of novel radiation detectors.
Fichier principal
Vignette du fichier
Marian Cholewa manuscript 2022.pdf (1.42 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03853950 , version 1 (15-11-2022)

Identifiants

Citer

Marian Cholewa, Anna Grędysa, Andrii Pozaruk, Thomas Osipowicz, Jeroen van Kan, et al.. Investigating the Secondary Electron Emission of Nanomaterials Induced by a High‐Resolution Proton Beam. physica status solidi (b), 2022, 259 (4), pp.2100445. ⟨10.1002/pssb.202100445⟩. ⟨hal-03853950⟩
15 Consultations
55 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More