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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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