Porous Nitride Light-Emitting Diodes - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue ACS photonics Année : 2022

Porous Nitride Light-Emitting Diodes

Résumé

A porous InGaN/GaN blue light-emitting diode is demonstrated using selective area sublimation. Transmission electron microscopy reveals that the structure is porous down to the Si substrate; however, the porosity is higher in the GaN buffer, while smaller pores are observed in the active region. This change of porosity between the active region and the buffer is explained by the modification of the dislocation pattern in the heterostructure, which is evidenced by weak beam transmission electron microscopy on a nonporosified reference sample. Cathodoluminescence mapping and electron beam-induced current microscopy (EBIC) analyses are used to probe the impact of porosification on the optical and electrical properties of the structure at nanoscale dimensions. It is observed that neither the quantum well emission nor the p–n junction EBIC spatial profile was degraded after porosification with respect to the nonannealed reference sample. A light-emitting diode with a fully porous active region is fabricated using a parylene pore filling for electrical insulation, and its electroluminescence is analyzed
Fichier principal
Vignette du fichier
ph-2021-01729c_Proof_hi.pdf (1.09 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03864353 , version 1 (21-11-2022)

Identifiants

Citer

Nuño Amador-Mendez, Tiphaine Mathieu-Pennober, Stéphane Vézian, Marie-Pierre Chauvat, Magali Morales, et al.. Porous Nitride Light-Emitting Diodes. ACS photonics, 2022, 9 (4), pp.1256-1263. ⟨10.1021/acsphotonics.1c01729⟩. ⟨hal-03864353⟩
102 Consultations
73 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More