Electroluminescence and current-voltage measurements of single-(In,Ga)N/GaN-nanowire light-emitting diodes in a nanowire ensemble
dc.bibliographicCitation.firstPage | 1177 | eng |
dc.bibliographicCitation.lastPage | 1187 | eng |
dc.bibliographicCitation.volume | 10 | eng |
dc.contributor.author | van Treeck, David | |
dc.contributor.author | Ledig, Johannes | |
dc.contributor.author | Scholz, Gregor | |
dc.contributor.author | Lähnemann, Jonas | |
dc.contributor.author | Musolino, Mattia | |
dc.contributor.author | Tahraoui, Abbes | |
dc.contributor.author | Brandt, Oliver | |
dc.contributor.author | Waag, Andreas | |
dc.contributor.author | Riechert, Henning | |
dc.contributor.author | Geelhaar, Lutz | |
dc.date.accessioned | 2021-10-26T08:31:23Z | |
dc.date.available | 2021-10-26T08:31:23Z | |
dc.date.issued | 2019 | |
dc.description.abstract | We present the combined analysis of electroluminescence (EL) and current-voltage (I-V) behavior of single, freestanding (In,Ga)N/GaN nanowire (NW) light-emitting diodes (LEDs) in an unprocessed, self-assembled ensemble grown by molecular beam epitaxy. The data were acquired in a scanning electron microscope equipped with a micromanipulator and a luminescence detection system. Single NW spectra consist of emission lines originating from different quantum wells, and the width of the spectra increases with decreasing peak emission energy. The corresponding I-V characteristics are described well by a modified Shockley equation. The key advantage of this measurement approach is the possibility to correlate the EL intensity of a single-NW LED with the actual current density in this NW. This way, the external quantum efficiency (EQE) can be investigated as a function of the current in a single-NW LED. The comparison of the EQE characteristic of single NWs and the ensemble device allows for a quite accurate determination of the actual number of emitting NWs in the working ensemble LED and the respective current densities in its individual NWs. This information is decisive for a meaningful and comprehensive characterization of a NW ensemble device, rendering the measurement approach employed here a very powerful analysis tool. © 2019 van Treeck et al. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/7104 | |
dc.identifier.uri | https://doi.org/10.34657/6151 | |
dc.language.iso | eng | eng |
dc.publisher | Frankfurt, M. : Beilstein-Institut zur Förderung der Chemischen Wissenschaften | eng |
dc.relation.doi | https://doi.org/10.3762/BJNANO.10.117 | |
dc.relation.essn | 2190-4286 | |
dc.relation.ispartofseries | Beilstein journal of nanotechnology 10 (2019) | eng |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject | Current-voltage | eng |
dc.subject | Electroluminescence | eng |
dc.subject | External quantum efficiency (EQE) | eng |
dc.subject | Nanowire LED | eng |
dc.subject | Single nanowire | eng |
dc.subject.ddc | 620 | eng |
dc.subject.ddc | 540 | eng |
dc.title | Electroluminescence and current-voltage measurements of single-(In,Ga)N/GaN-nanowire light-emitting diodes in a nanowire ensemble | eng |
dc.type | article | eng |
dc.type | Text | eng |
dcterms.bibliographicCitation.journalTitle | Beilstein journal of nanotechnology | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | PDI | eng |
wgl.subject | Ingenieurwissenschaften | eng |
wgl.type | Zeitschriftenartikel | eng |
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