Charge transport and localization in nanocrystalline CdS films: A time-resolved terahertz spectroscopy study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10104372" target="_blank" >RIV/00216208:11320/11:10104372 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/11:00361370
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.83.155326" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.83.155326</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.83.155326" target="_blank" >10.1103/PhysRevB.83.155326</a>
Alternative languages
Result language
angličtina
Original language name
Charge transport and localization in nanocrystalline CdS films: A time-resolved terahertz spectroscopy study
Original language description
Assessment of characteristic length and time scales of the charge localization in nanostructured semiconductors is a key point for understanding the initial stage of carrier transport after photoexcitation. A use of time-resolved terahertz spectroscopy and Monte Carlo simulations of the electron motion allow us to obtain this information and develop a microscopic model of the electron transport in a nanocrystalline CdS film. A weak localization is observed inside individual nanocrystals (NCs) while muchstronger localization stems from the existence of NC clusters. The efficiency of the short-range transport is controlled by the excess energy of electrons: Its increase enhances the conductive coupling between adjacent NCs and clusters. Relaxation of electrons with high excess energy then leads to a decrease of their mobility on a sub-ps time scale. Filling of conduction-band states by increasing the optical pump fluence allows us to maintain a high mobility even at later times.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B - Condensed Matter and Materials Physics
ISSN
1098-0121
e-ISSN
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Volume of the periodical
83
Issue of the periodical within the volume
15
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
1-6
UT code for WoS article
000292151200004
EID of the result in the Scopus database
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