[HTML][HTML] GaAs quantum dots grown by droplet etching epitaxy as quantum light sources

SFC da Silva, G Undeutsch, B Lehner, S Manna… - Applied Physics …, 2021 - pubs.aip.org
This Perspective presents an overview on the epitaxial growth and optical properties of
GaAs quantum dots obtained with the droplet etching method as high-quality sources of …

Kinetic model of local droplet etching

C Heyn - Physical Review B—Condensed Matter and Materials …, 2011 - APS
The self-organized in situ drilling of nanoholes into semiconductor surfaces by using liquid
metallic droplets during conventional molecular beam epitaxy represents a new degree of …

Control of morphology and substrate etching in InAs/InP droplet epitaxy quantum dots for single and entangled photon emitters

RSR Gajjela, EM Sala, J Heffernan… - ACS Applied Nano …, 2022 - ACS Publications
We present a detailed atomic-resolution study of morphology and substrate etching
mechanism in InAs/InP droplet epitaxy quantum dots (QDs) grown by metal–organic vapor …

Dynamics of self-assembled droplet etching

C Heyn, A Stemmann, W Hansen - Applied Physics Letters, 2009 - pubs.aip.org
We study the self-assembled local droplet etching of nanoholes in AlGaAs surfaces with Ga
droplets. The data establish an unexpected delay of both the hole drilling process as well as …

Dynamics of mass transport during nanohole drilling by local droplet etching

C Heyn, T Bartsch, S Sanguinetti, D Jesson… - Nanoscale research …, 2015 - Springer
Local droplet etching (LDE) utilizes metal droplets during molecular beam epitaxy for the self-
assembled drilling of nanoholes into III/V semiconductor surfaces. An essential process …

Nanohole etching in AlGaSb with gallium droplets

J Hilska, A Chellu, T Hakkarainen - Crystal Growth & Design, 2021 - ACS Publications
We demonstrate nanohole formation in AlGaSb by Ga droplet etching within a temperature
range from 270 to 500° C, allowing a wide range of tunability of the nanohole density. By …

[HTML][HTML] Highly uniform GaSb quantum dots with indirect–direct bandgap crossover at telecom range

A Chellu, J Hilska, JP Penttinen, T Hakkarainen - APL Materials, 2021 - pubs.aip.org
We demonstrate a new quantum-confined semiconductor material based on GaSb quantum
dots (QDs) embedded in a single-crystalline AlGaSb matrix by filling droplet-etched …

Optical properties of cylindrical quantum dots with hyperbolic-type axial potential under applied electric field

E Kasapoglu, MB Yücel, S Sakiroglu, H Sari, CA Duque - Nanomaterials, 2022 - mdpi.com
In this paper, we have researched the electronic and optical properties of cylindrical
quantum dot structures by selecting four different hyperbolic-type potentials in the axial …

Strong Electric Polarizability of Cone–Shell Quantum Structures for a Large Stark Shift, Tunable Long Exciton Lifetimes, and a Dot-to-Ring Transformation

C Heyn, L Ranasinghe, K Deneke, A Alshaikh… - Nanomaterials, 2023 - mdpi.com
Strain-free GaAs cone–shell quantum structures (CSQS) with widely tunable wave functions
(WF) are fabricated using local droplet etching (LDE) during molecular beam epitaxy (MBE) …

Single-dot spectroscopy of GaAs quantum dots fabricated by filling of self-assembled nanoholes

C Heyn, M Klingbeil, C Strelow, A Stemmann… - Nanoscale research …, 2010 - Springer
We study the optical emission of single GaAs quantum dots (QDs). The QDs are fabricated
by filling of nanoholes in AlGaAs and AlAs which are generated in a self-assembled fashion …