Punctuated growth of InAs quantum dashes-in-a-well for enhanced 2-µm emission.
Discov Nano
; 18(1): 31, 2023 03 06.
Article
de En
| MEDLINE
| ID: mdl-36872401
ABSTRACT
InAs quantum dashes (Qdash) engineered to emit near 2 µm are envisioned to be promising quantum emitters for next-generation technologies in sensing and communications. In this study, we explore the effect of punctuated growth (PG) on the structure and optical properties of InP-based InAs Qdashes emitting near the 2-µm wavelength. Morphological analysis revealed that PG led to an improvement in in-plane size uniformity and increases in average height and height distribution. A 2 × boost in photoluminescence intensity was observed, which we attribute to improved lateral dimensions and structural stabilization. PG encouraged formation of taller Qdashes while photoluminescence measurements revealed a blue-shift in the peak wavelength. We proposed that the blue-shift originates from the thinner quantum well cap and decreased distance between the Qdash and InAlGaAs barrier. This study on the punctuated growth of large InAs Qdashes is a step toward realizing bright, tunable, and broadband sources for 2-µm communications, spectroscopy, and sensing.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Langue:
En
Journal:
Discov Nano
Année:
2023
Type de document:
Article
Pays d'affiliation:
Corée du Sud