Tuning of mid-infrared emission of ternary PbSrTe/CdTe quantum dots

Astrid Christine Hochreiner; Stefan Kriechbaumer; Thomas Schwarzl; Heiko Groiss; Mahmood Hassan; Gunther Springholz

doi:10.1063/1.3694286

Tuning of mid-infrared emission of ternary PbSrTe/CdTe quantum dots

Astrid Christine Hochreiner
, Stefan Kriechbaumer
, Thomas Schwarzl
, Heiko Groiss
, Mahmood Hassan
, Gunther Springholz

Abteilung für Halbleiterphysik

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

Abstract

Tunable room-temperature mid-infrared photoluminescence emission from epitaxial PbSrTe quantum dots embedded in CdTe is demonstrated. By variation of the Sr content, the emission wavelength can be tuned over the whole 3 to 1.6 μm range. Comparing the emission of PbSrTe quantum dots, quantum wells and bulk material, a one order of magnitude increase in the emission efficiency is found for the quantum dots, contrary to the bulk behavior. Theoretical modelling of the transition energies shows that at higher Sr content, segregation of Sr into CdTe occurs. This conclusion is supported by annealing experiments.

Originalsprache	Englisch
Aufsatznummer	113112
Seiten (von - bis)	113112
Seitenumfang	5
Fachzeitschrift	Applied Physics Letters
Volume	100
Ausgabenummer	11
DOIs	https://doi.org/10.1063/1.3694286
Publikationsstatus	Veröffentlicht - 12 März 2012

Wissenschaftszweige

103026 Quantenoptik
103009 Festkörperphysik
103 Physik, Astronomie
103011 Halbleiterphysik
202018 Halbleiterelektronik
210006 Nanotechnologie

JKU-Schwerpunkte

Nano-, Bio- and Polymer-Systems: From Structure to Function

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10.1063/1.3694286

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abstract = "Tunable room-temperature mid-infrared photoluminescence emission from epitaxial PbSrTe quantum dots embedded in CdTe is demonstrated. By variation of the Sr content, the emission wavelength can be tuned over the whole 3 to 1.6 μm range. Comparing the emission of PbSrTe quantum dots, quantum wells and bulk material, a one order of magnitude increase in the emission efficiency is found for the quantum dots, contrary to the bulk behavior. Theoretical modelling of the transition energies shows that at higher Sr content, segregation of Sr into CdTe occurs. This conclusion is supported by annealing experiments.",

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AU - Hochreiner, Astrid Christine

AU - Kriechbaumer, Stefan

AU - Schwarzl, Thomas

AU - Groiss, Heiko

AU - Hassan, Mahmood

AU - Springholz, Gunther

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AB - Tunable room-temperature mid-infrared photoluminescence emission from epitaxial PbSrTe quantum dots embedded in CdTe is demonstrated. By variation of the Sr content, the emission wavelength can be tuned over the whole 3 to 1.6 μm range. Comparing the emission of PbSrTe quantum dots, quantum wells and bulk material, a one order of magnitude increase in the emission efficiency is found for the quantum dots, contrary to the bulk behavior. Theoretical modelling of the transition energies shows that at higher Sr content, segregation of Sr into CdTe occurs. This conclusion is supported by annealing experiments.

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