Ultrafast terahertz photoconductivity in nanocrystalline mesoporous TiO2 films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F10%3A00342062" target="_blank" >RIV/68378271:_____/10:00342062 - isvavai.cz</a>

Alternative codes found

RIV/61388955:_____/10:00342062

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Ultrafast terahertz photoconductivity in nanocrystalline mesoporous TiO2 films

Original language description

Terahertz time-resolved spectroscopy is used to investigate the transport of photoexcited electrons in nanocrystalline mesoporous TiO2 films prepared by the recently proposed "brick and mortar" technology [Szeifert et al. Chem. Mater. 21, 1260 (2009)] with a variable fraction of nanocrystalline titania "bricks" and amorphous titania "mortar". Both long- and short-range conductivity is significantly enhanced upon calcination. After an ultrafast (subpicosecond) regime where the intrananograin conductivitydominates, the electron conductivity becomes limited by the interaction of electrons with the amorphous mortar. Comparison of the experimental results with Monte Carlo simulations of the electron motion allows us to determine the crystalline grain sizeafter calcination and the yield of mobile photocarriers.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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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)

Publication year

2010

Confidentiality

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

Name of the periodical

Applied Physics Letters

ISSN

0003-6951

e-ISSN

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Volume of the periodical

96

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

3

Pages from-to

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UT code for WoS article

000274516900030

EID of the result in the Scopus database

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