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 a Dominique GEFFROY

Základní údaje

Originální název

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

Autoři

KLENOVSKÝ, Petr (203 Česká republika, garant, domácí), Petr STEINDL (203 Česká republika, domácí) a Dominique GEFFROY (250 Francie, domácí)

Vydání

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

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.122

Kód RIV

RIV/00216224:14310/17:00096388

Organizační jednotka

Přírodovědecká fakulta

DOI

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

UT WoS

000398415700001

Klíčová slova anglicky

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

Štítky

NZ, rivok

Změněno: 3. 4. 2018 15:24, Ing. Nicole Zrilić

Anotace

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.

Návaznosti

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

Citovat

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

Podrobný výpis o publikaci