Excitonic structure and pumping power dependent emission
blue-shift of type-II quantum dots

J 2017

Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots

KLENOVSKÝ, Petr, Petr STEINDL and Dominique GEFFROY

Basic information

Original name

Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots

Authors

KLENOVSKÝ, Petr (203 Czech Republic, guarantor, belonging to the institution), Petr STEINDL (203 Czech Republic, belonging to the institution) and Dominique GEFFROY (250 France, belonging to the institution)

Edition

Scientific Reports, London, Nature Publishing Group, 2017, 2045-2322

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10302 Condensed matter physics

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 4.122

RIV identification code

RIV/00216224:14310/17:00096388

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1038/srep45568

UT WoS

000398415700001

Keywords in English

multi-particle states; configuration interaction; photoluminescence; quantum dots

Abstract

V originále

In this work we study theoretically and experimentally the multi-particle structure of the so-called type-II quantum dots with spatially separated electrons and holes. Our calculations based on customarily developed full configuration interaction approach reveal that exciton complexes containing holes interacting with two or more electrons exhibit fairly large antibinding energies. This effect is found to be the hallmark of the type-II confinement. In addition, an approximate self-consistent solution of the multi-exciton problem allows us to explain two pronounced phenomena: the blue-shift of the emission with pumping and the large inhomogeneous spectral broadening, both of those eluding explanation so far. The results are confirmed by detailed intensity and polarization resolved photoluminescence measurements on a number of type-II samples.

Links

LQ1601, research and development project

Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

KLENOVSKÝ, Petr, Petr STEINDL and Dominique GEFFROY. Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots. Scientific Reports. London: Nature Publishing Group, 2017, vol. 7, March, p. nestránkováno, 10 pp. ISSN 2045-2322. Available from: https://dx.doi.org/10.1038/srep45568.

@article{1376957,
   author = {Klenovský, Petr and Steindl, Petr and Geffroy, Dominique},
   article_location = {London},
   article_number = {March},
   doi = {http://dx.doi.org/10.1038/srep45568},
   keywords = {multi-particle states; configuration interaction; photoluminescence; quantum dots},
   language = {eng},
   issn = {2045-2322},
   journal = {Scientific Reports},
   title = {Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots},
   url = {http://www.nature.com/articles/srep45568},
   volume = {7},
   year = {2017}
}

TY  - JOUR
ID  - 1376957
AU  - Klenovský, Petr - Steindl, Petr - Geffroy, Dominique
PY  - 2017
TI  - Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots
JF  - Scientific Reports
VL  - 7
IS  - March
SP  - nestránkováno
EP  - nestránkováno
PB  - Nature Publishing Group
SN  - 20452322
KW  - multi-particle states
KW  - configuration interaction
KW  - photoluminescence
KW  - quantum dots
UR  - http://www.nature.com/articles/srep45568
L2  - http://www.nature.com/articles/srep45568
N2  - In this work we study theoretically and experimentally the multi-particle structure of the so-called type-II quantum dots with spatially separated electrons and holes. Our calculations based on customarily developed full configuration interaction approach reveal that exciton complexes containing holes interacting with two or more electrons exhibit fairly large antibinding energies. This effect is found to be the hallmark of the type-II confinement. In addition, an approximate self-consistent solution of the multi-exciton problem allows us to explain two pronounced phenomena: the blue-shift of the emission with pumping and the large inhomogeneous spectral broadening, both of those eluding explanation so far. The results are confirmed by detailed intensity and polarization resolved photoluminescence measurements on a number of type-II samples.
ER  -

KLENOVSKÝ, Petr, Petr STEINDL and Dominique GEFFROY. Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots. \textit{Scientific Reports}. London: Nature Publishing Group, 2017, vol.~7, March, p.~nestránkováno, 10 pp. ISSN~2045-2322. Available from: https://dx.doi.org/10.1038/srep45568.

Detailed Information on Publication Record