Strong Modulations of Optical Reflectance in Tapered Core–Shell Nanowires - Université Claude Bernard Lyon 1 Accéder directement au contenu
Article Dans Une Revue Materials Année : 2019

Strong Modulations of Optical Reflectance in Tapered Core–Shell Nanowires

Résumé

Random assemblies of vertically aligned core–shell GaAs–AlGaAs nanowires displayed an optical response dominated by strong oscillations of the reflected light as a function of the incident angle. In particular, angle-resolved specular reflectance measurements showed the occurrence of periodic modulations in the polarization-resolved spectra of reflected light for a surprisingly wide range of incident angles. Numerical simulations allowed for identifying the geometrical features of the core–shell nanowires leading to the observed oscillatory effects in terms of core and shell thickness as well as the tapering of the nanostructure. The present results indicate that randomly displaced ensembles of nanoscale heterostructures made of III–V semiconductors can operate as optical metamirrors, with potential for sensing applications.
Fichier principal
Vignette du fichier
materials-12-03572.pdf (3.02 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-02436405 , version 1 (10-12-2020)

Identifiants

Citer

Francesco Floris, Lucia Fornasari, Vittorio Bellani, Andrea Marini, Francesco Banfi, et al.. Strong Modulations of Optical Reflectance in Tapered Core–Shell Nanowires. Materials, 2019, 12 (21), pp.3572. ⟨10.3390/ma12213572⟩. ⟨hal-02436405⟩
52 Consultations
14 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More