| DOI | Trouver le DOI : https://doi.org/10.1088/1361-6641/ab708e |
|---|
| Auteur | Rechercher : Walker, Alexandre W.1Identifiant ORCID : https://orcid.org/0000-0002-1791-2140; Rechercher : Shaked, Amit; Rechercher : Dagan, Ronen; Rechercher : Kribus, Abraham; Rechercher : Rosenwaks, Yossi; Rechercher : Ohlmann, Jens; Rechercher : Lackner, David; Rechercher : Dimroth, Frank |
|---|
| Affiliation | - Conseil national de recherches Canada. Électronique et photonique avancées
|
|---|
| Format | Texte, Article |
|---|
| Sujet | III–V semiconductors; double-heterostructures; photoluminescence; minority carrier recombination lifetime; interface recombination velocity |
|---|
| Résumé | The bulk minority carrier lifetime and interface recombination velocity (IRV) in GaInP double-heterostructures (DHs) lattice matched to GaAs are extracted using time-resolved photoluminescence (PL) measured between 300 and 500 K. Effective lifetimes show a strong dependence on temperature for samples with insufficiently strong confinement potentials due to significant thermionic emission losses out of the DHs. An increased PL signal from the underlying GaAs layer relative to GaInP's PL at high temperatures supports this hypothesis. The impact is a shorter recombination lifetime which can be wrongly interpreted as a high IRV of up to 4500 cm s⁻¹ at 500 K. These effects are investigated experimentally using samples of different barrier heights based on the Al-content in (Al x Ga1–x )₀.₅₁In₀.₄₉P. A larger barrier height is shown to inhibit thermionic emission out of the DH, thus revealing a more accurate IRV of 300 cm s⁻¹ at 500 K. The results are then used to develop a correction procedure to extract a more accurate IRV at the barriers of the DH. Optoelectronic device simulations are used to gain insight into carrier dynamics as a function of temperature and the DH's barrier height, and confirm a strong inhibition of the thermionic emission losses as the Al-content is maximized in the barrier. |
|---|
| Date de publication | 2020-03-23 |
|---|
| Maison d’édition | IOP Publishing |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 0400a210-1b24-4c22-834e-84d06fb02992 |
|---|
| Enregistrement créé | 2020-07-21 |
|---|
| Enregistrement modifié | 2021-09-17 |
|---|
