Polarization anisotropy of the emission from type-II quantum dots

KLENOVSKÝ, Petr, Dušan HEMZAL, Petr STEINDL, Markéta ZÍKOVA, Vlastimil KŘÁPEK and Josef HUMLÍČEK. Polarization anisotropy of the emission from type-II quantum dots. Physical Review B. COLLEGE PK: The American Physical Society, 2015, vol. 92, No 24, p. "nestránkováno", 5 pp. ISSN 1098-0121. Available from: https://dx.doi.org/10.1103/PhysRevB.92.241302.

Basic information

• Original name: Polarization anisotropy of the emission from type-II quantum dots
• Authors: KLENOVSKÝ, Petr (203 Czech Republic, guarantor, belonging to the institution), Dušan HEMZAL (203 Czech Republic, belonging to the institution), Petr STEINDL (203 Czech Republic, belonging to the institution), Markéta ZÍKOVA (203 Czech Republic), Vlastimil KŘÁPEK (203 Czech Republic) and Josef HUMLÍČEK (203 Czech Republic, belonging to the institution).
• Edition: Physical Review B, COLLEGE PK, The American Physical Society, 2015, 1098-0121.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10302 Condensed matter physics
• Country of publisher: United States of America
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 3.736 in 2014
• RIV identification code: RIV/00216224:14310/15:00080413
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1103/PhysRevB.92.241302
• UT WoS: 000366496300002
• Keywords in English: quantum dots; type-II bandalignment; photoluminescence; polarization
• Tags: AKR, rivok
• Tags: International impact, Reviewed

Abstract

We study the polarization response of the emission from type-II GaAsSb capped InAs quantum dots. The theoretical prediction based on the calculations of the overlap integrals of the single-particle states obtained in the (k) over right arrow . (p) over right arrow framework is given. This is verified experimentally by polarization resolved photoluminescence measurements on samples with the type-II confinement. We show that the polarization anisotropy might be utilized to find the vertical position of the hole wave function and its orientation with respect to crystallographic axes of the sample. A proposition for usage in the information technology as a room temperature photonic gate operating at the communication wavelengths as well as a simple model to estimate the energy of fine-structure splitting for type-II GaAsSb capped InAs QDs are given.

Links

• CZ.1.07/2.3.00/20.0027, interní kód MU(CEP code: EE2.3.20.0027): Name: NANOE - Posílení excelence vědeckých týmů v oblasti nano- a mikrotechnologií (Acronym: NANOE)

Investor: Ministry of Education, Youth and Sports of the CR, Support of Excellence Research Teams in the Field of Nanotechnologies and Microtechnologies, 2.3 Human resources in research and development

• ED1.1.00/02.0068, research and development project: Name: CEITEC - central european institute of technology
• MUNI/A/1496/2014, interní kód MU: Name: Struktura, elektronová struktura a optická odezva pokročilých materiálů IV

Investor: Masaryk University, Category A

• TH01010419, research and development project: Name: Výzkum a vývoj nových technologií výroby bipolárního tranzistoru s izolovaným hradlem (TIGBT)

Investor: Technology Agency of the Czech Republic