Centrosymmetric PbTe∕ CdTe quantum dots coherently embedded by epitaxial precipitation

W Heiss, H Groiss, E Kaufmann, G Hesser… - Applied physics …, 2006 - pubs.aip.org
A concept for the fabrication of highly symmetric quantum dots that are coherently
embedded in a single crystalline matrix is demonstrated. In this approach, the formation of …

Size control and midinfrared emission of epitaxial PbTe∕ CdTe quantum dot precipitates grown by molecular beam epitaxy

H Groiss, E Kaufmann, G Springholz… - Applied Physics …, 2007 - pubs.aip.org
Epitaxial quantum dots with symmetric and highly facetted shapes are fabricated by thermal
annealing of two-dimensional (2D) PbTe epilayers embedded in a CdTe matrix. By varying …

Optical transitions in quantum dots

TN Xu, HZ Wu, JX Si, PJ McCann - Physical Review B—Condensed Matter and …, 2007 - APS
Recently, intense room-temperature midinfrared luminescent emission has been observed
in high-symmetry PbTe quantum dots (QDs) embedded in a (001)-oriented CdTe single …

Temperature-dependent midinfrared photoluminescence of epitaxial PbTe/CdTe quantum dots and calculation of the corresponding transition energy

T Schwarzl, E Kaufmann, G Springholz, K Koike… - Physical Review B …, 2008 - APS
We present the temperature dependence of continuous-wave midinfrared
photoluminescence of PbTe quantum dots in a CdTe matrix. The quantum dots are formed …

Fabrication and characterization of a PbTe quantum dots multilayer structure

E Rodriguez, E Jimenez, GJ Jacob, AAR Neves… - Physica E: Low …, 2005 - Elsevier
Multilayer PbTe quantum dots (QDs) and SiO2 were grown by pulsed laser deposition (PLD)
and Plasma enhanced chemical vapor deposition (PECVD) techniques. The crystalline …

Oswald ripening and shape transitions of self-assembled PbSe quantum dots on PbTe (111) during annealing

A Raab, G Springholz - Applied Physics Letters, 2000 - pubs.aip.org
The thermal stability of faceted self-assembled PbSe quantum dots during annealing is
investigated. With increasing annealing time, the dot density is found to decrease rapidly …

Molecular beam epitaxy of highly faceted self-assembled IV–VI quantum dots with bimodal size distribution

M Pinczolits, G Springholz, G Bauer - Journal of crystal growth, 1999 - Elsevier
Heteroepitaxial growth of− 5.5% lattice-mismatched PbSe on PbTe (111) is studied using in
situ reflection high-energy electron diffraction and atomic force microscopy. It is shown that …

Photoluminescence properties of CdTe∕ CdSe core-shell type-II quantum dots

CH Wang, TT Chen, KW Tan, YF Chen… - Journal of applied …, 2006 - pubs.aip.org
We report investigations on the optical properties of type-II Cd Te∕ Cd Se core-shell
quantum dots. By varying the core size, we provide an elegant way to verify that the detected …

Midinfrared electroluminescence from PbTe/CdTe quantum dot light-emitting diodes

A Hochreiner, T Schwarzl, M Eibelhuber… - Applied Physics …, 2011 - pubs.aip.org
Midinfrared electroluminescence of epitaxial PbTe quantum dots in CdTe with emission in
the 2–3 μ m wavelength range is demonstrated up to room temperature. The light-emitting …

Photoluminescence characterization of PbTe/CdTe quantum dots grown by lattice-type mismatched epitaxy

K Koike, H Harada, T Itakura, M Yano, W Heiss… - Journal of crystal …, 2007 - Elsevier
This paper describes molecular beam epitaxial growth and photoluminescence (PL)
properties of PbTe quantum wells (QWs) and quantum dots (QDs) in CdTe matrix. Cross …