Quantum Confined Stark Effect in Embedded PbTe Nanocrystals

R. Leitsmann (), F. Bechstedt and F. Ortmann
Additional contact information
R. Leitsmann: Friedrich-Schiller-Universität Jena, European Theoretical Spectroscopy Facility (ETSF) and Institut für Festkörpertheorie und -optik
F. Bechstedt: Friedrich-Schiller-Universität Jena, European Theoretical Spectroscopy Facility (ETSF) and Institut für Festkörpertheorie und -optik
F. Ortmann: Friedrich-Schiller-Universität Jena, European Theoretical Spectroscopy Facility (ETSF) and Institut für Festkörpertheorie und -optik

A chapter in High Performance Computing in Science and Engineering '08, 2009, pp 59-70 from Springer

Abstract: Summary We investigate structural and electronic properties of PbTe nanocrystals (NCs) embedded in a CdTe matrix using an ab initio pseudopotential method and a repeated super cell approximation. The dot-matrix interface structure was found to be in good agreement with observations at planar PbTe/CdTe interfaces. In particular the so called rumpling effect at Te-terminated {100}PbTe/CdTe interfaces is of the same order of magnitude. Calculations concerning the stability of the embedded PbTe NCs confirm the assumption of a rhombo-cubo-octahedron equilibrium crystal shape (ECS). The occurrence of internal electrostatic fields as a consequence of the polar dot-matrix interfaces is demonstrated. The resulting internal quantum confined Stark effect (IQCSE) leads to a spatial separation of electron and hole wavefunctions in the NCs and, hence, to a reduction of the optical oscillator strength at low temperatures.

Date: 2009
References: Add references at CitEc
Citations:

There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-540-88303-6_5

Ordering information: This item can be ordered from
http://www.springer.com/9783540883036

DOI: 10.1007/978-3-540-88303-6_5

Access Statistics for this chapter

More chapters in Springer Books from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().