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

Department of Semiconductor Physics

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	113112
Pages (from-to)	113112
Number of pages	5
Journal	Applied Physics Letters
Volume	100
Issue number	11
DOIs	https://doi.org/10.1063/1.3694286
Publication status	Published - 2012

Fields of science

103026 Quantum optics
103009 Solid state physics
103 Physics, Astronomy
103011 Semiconductor physics
202018 Semiconductor electronics
210006 Nanotechnology

JKU Focus areas

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

Access to Document

10.1063/1.3694286

Cite this

@article{6bbf8d17e5e94a51965bec6dbae621ef,

title = "Tuning of mid-infrared emission of ternary PbSrTe/CdTe quantum dots",

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.",

author = "Hochreiner, {Astrid Christine} and Stefan Kriechbaumer and Thomas Schwarzl and Heiko Groiss and Mahmood Hassan and Gunther Springholz",

year = "2012",

doi = "10.1063/1.3694286",

language = "English",

volume = "100",

pages = "113112",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "11",

}

TY - JOUR

T1 - Tuning of mid-infrared emission of ternary PbSrTe/CdTe quantum dots

AU - Hochreiner, Astrid Christine

AU - Kriechbaumer, Stefan

AU - Schwarzl, Thomas

AU - Groiss, Heiko

AU - Hassan, Mahmood

AU - Springholz, Gunther

PY - 2012

Y1 - 2012

N2 - 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.

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.

U2 - 10.1063/1.3694286

DO - 10.1063/1.3694286

M3 - Article

SN - 0003-6951

VL - 100

SP - 113112

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

M1 - 113112

ER -