Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine
Structure

J 2016

Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure

KŘÁPEK, Vlastimil; Petr KLENOVSKÝ a Tomáš ŠIKOLA

Základní údaje

Originální název

Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure

Autoři

KŘÁPEK, Vlastimil; Petr KLENOVSKÝ a Tomáš ŠIKOLA

Vydání

ACTA PHYSICA POLONICA A, Warsaw, POLISH ACAD SCIENCES INST PHYSICS, 2016, 0587-4246

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Polsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 0.469

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/16:00089553

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

quantum dots; type-II bandalignment; excitonic fine structure; theory

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 18. 3. 2018 10:26, Mgr. Petr Klenovský, Ph.D.

Anotace

V originále

e have theoretically studied type-I and type-II confinement in InAs quantum dots with GaAsSb capping layer. The character of the confinement can be adjusted by the Sb content. We have found that upon the transition from type-I to type-II confinement the hole wave functions change the topology from a compact shape to a two-segment shape, resulting in the complex changes in the exciton fine structure splitting with zero values at particular compositions. Additionally, a high exciton radiative recombination probability is preserved even in type-II. This allows to design strongly luminescent quantum dots with naturally low fine structure splitting, which could serve as sources of entangled photon pairs for quantum communication.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

EE2.3.20.0027, projekt VaV

Název: Posílení excelence vědeckých týmů v oblasti nano a mikrotechnologií

MUNI/A/1496/2014, interní kód MU

Název: Struktura, elektronová struktura a optická odezva pokročilých materiálů IV

Investor: Masarykova univerzita, Struktura, elektronová struktura a optická odezva pokročilých materiálů IV, DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty

Citovat

KŘÁPEK, Vlastimil; Petr KLENOVSKÝ a Tomáš ŠIKOLA. Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure. ACTA PHYSICA POLONICA A. Warsaw: POLISH ACAD SCIENCES INST PHYSICS, 2016, roč. 129, 1A, s. "A66"-"A69", 4 s. ISSN 0587-4246. Dostupné z: https://doi.org/10.12693/APhysPolA.129.A-66.

@article{1339608,
   author = {Křápek, Vlastimil and Klenovský, Petr and Šikola, Tomáš},
   article_location = {Warsaw},
   article_number = {1A},
   doi = {https://doi.org/10.12693/APhysPolA.129.A-66},
   keywords = {quantum dots; type-II bandalignment; excitonic fine structure; theory},
   language = {eng},
   issn = {0587-4246},
   journal = {ACTA PHYSICA POLONICA A},
   title = {Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure},
   url = {http://przyrbwn.icm.edu.pl/APP/PDF/129/a129z1ap13.pdf},
   volume = {129},
   year = {2016}
}

TY  - JOUR
ID  - 1339608
AU  - Křápek, Vlastimil - Klenovský, Petr - Šikola, Tomáš
PY  - 2016
TI  - Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure
JF  - ACTA PHYSICA POLONICA A
VL  - 129
IS  - 1A
SP  - "A66"-"A69"
EP  - "A66"-"A69"
PB  - POLISH ACAD SCIENCES INST PHYSICS
SN  - 05874246
KW  - quantum dots
KW  - type-II bandalignment
KW  - excitonic fine structure
KW  - theory
UR  - http://przyrbwn.icm.edu.pl/APP/PDF/129/a129z1ap13.pdf
L2  - http://przyrbwn.icm.edu.pl/APP/PDF/129/a129z1ap13.pdf
N2  - e have theoretically studied type-I and type-II confinement in InAs quantum dots with GaAsSb capping layer. The character of the confinement can be adjusted by the Sb content. We have found that upon the transition from type-I to type-II confinement the hole wave functions change the topology from a compact shape to a two-segment shape, resulting in the complex changes in the exciton fine structure splitting with zero values at particular compositions. Additionally, a high exciton radiative recombination probability is preserved even in type-II. This allows to design strongly luminescent quantum dots with naturally low fine structure splitting, which could serve as sources of entangled photon pairs for quantum communication.
ER  -

KŘÁPEK, Vlastimil; Petr KLENOVSKÝ a Tomáš ŠIKOLA. Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure. \textit{ACTA PHYSICA POLONICA A}. Warsaw: POLISH ACAD SCIENCES INST PHYSICS, 2016, roč.~129, 1A, s.~''A66''-''A69'', 4 s. ISSN~0587-4246. Dostupné z: https://doi.org/10.12693/APhysPolA.129.A-66.

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