Charge tunable GaAs quantum dots in a photonic n-i-p diode
- In this submission, we discuss the growth of charge-controllable GaAs quantum dots embedded in an n-i-p diode structure, from the perspective of a molecular beam epitaxy grower. The QDs show no blinking and narrow linewidths. We show that the parameters used led to a bimodal growth mode of QDs resulting from low arsenic surface coverage. We identify one of the modes as that showing good properties found in previous work. As the morphology of the fabricated QDs does not hint at outstanding properties, we attribute the good performance of this sample to the low impurity levels in the matrix material and the ability of n- and p-doped contact regions to stabilize the charge state. We present the challenges met in characterizing the sample with ensemble photoluminescence spectroscopy caused by the photonic structure used. We show two straightforward methods to overcome this hurdle and gain insight into QD emission properties.
| Author: | Hans-Georg BabinGND, Julian RitzmannORCiDGND, Nikolai BartGND, Marcel SchmidtORCiDGND, Timo KruckGND, Liang ZhaiORCiDGND, Matthias Christian LöblORCiDGND, Giang N. NguyenORCiDGND, Clemens SpinnlerORCiDGND, Leonardo RanasingheGND, Richard WarburtonORCiDGND, Christian HeynORCiDGND, Andreas D. WieckORCiDGND, Arne LudwigORCiDGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-86242 |
| DOI: | https://doi.org/10.3390/nano11102703 |
| Parent Title (English): | Nanomaterials |
| Publisher: | MDPI |
| Place of publication: | Basel |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2022/02/22 |
| Date of first Publication: | 2021/10/13 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Tag: | Open Access Fonds growth kinetics; quantum dots; quantum photonics; semiconductor epitaxy; single-photon emitters |
| Volume: | 11 |
| Issue: | 10, Article 2703 |
| First Page: | 2703-1 |
| Last Page: | 2703-19 |
| Note: | Article Processing Charge funded by the Open Access Publication Fund of Ruhr-Universität Bochum. |
| Institutes/Facilities: | Lehrstuhl für angewandte Festkörperphysik |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Physik |
| open_access (DINI-Set): | open_access |
| faculties: | Fakultät für Physik und Astronomie |
| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
