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Assessing Carrier Recombination Processes in Type-II SiGe/Si(001) Quantum Dots

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00108336" target="_blank" >RIV/00216224:14310/19:00108336 - isvavai.cz</a>

  • Result on the web

    <a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.201800259" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.201800259</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1002/andp.201800259" target="_blank" >10.1002/andp.201800259</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Assessing Carrier Recombination Processes in Type-II SiGe/Si(001) Quantum Dots

  • Original language description

    In this work, it is shown how different carrier recombination paths significantly broaden the photoluminescence (PL) emission bandwidth observed in type-II self-assembled SiGe/Si(001) quantum dots (QDs). QDs grown by molecular beam epitaxy with very homogeneous size distribution, onion-shaped composition profile, and Si capping layer thicknesses varying from 0 to 1100 nm are utilized to assess the optical carrier-recombination paths. By using high-energy photons for PL excitation, electron-hole pairs can be selectively generated either above or below the QD layer and, thus, clearly access two radiative carrier recombination channels. Fitting the charge carrier capture-, loss- and recombination-dynamics to PL time-decay curves measured for different experimental configurations allows to obtain quantitative information of carrier capture-, excitonic-emission-, and Auger-recombination rates in this type-II nano-system.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Annalen der Physik (Berlin)

  • ISSN

    0003-3804

  • e-ISSN

    1521-3889

  • Volume of the periodical

    531

  • Issue of the periodical within the volume

    6

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    12

  • Pages from-to

    1-12

  • UT code for WoS article

    000471714300011

  • EID of the result in the Scopus database

    2-s2.0-85059865984