Light harvesting in silicon(111) surfaces using covalently attached protoporphyrin IX dyes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F17%3A00317367" target="_blank" >RIV/68407700:21230/17:00317367 - isvavai.cz</a>
Result on the web
<a href="http://pubs.rsc.org/en/Content/ArticleLanding/2017/CC/C7CC04767C#!divAbstract" target="_blank" >http://pubs.rsc.org/en/Content/ArticleLanding/2017/CC/C7CC04767C#!divAbstract</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c7cc04767c" target="_blank" >10.1039/c7cc04767c</a>

Result language
angličtina
Original language name
Light harvesting in silicon(111) surfaces using covalently attached protoporphyrin IX dyes
Original language description
We report the photosensitization of crystalline silicon via energy transfer using covalently attached protoporphyrin IX (PpIX) derivative molecules at different distances via changing the diol linker to the surface. The diol linker molecule chain length was varied from 2 carbon to 10 carbon lengths in order to change the distance of PpIX to the Si(111) surface between 6 A and 18 A. Fluorescence quenching as a function of the PpIX-Si surface distance showed a decrease in the fluorescence lifetime by almost two orders of magnitude at the closest separation. The experimental fluorescence lifetimes are explained theoretically by a classical Chance-Prock-Silbey model. At a separation below 2 nm, we observe for the first time, a Forster like dipole-dipole energy transfer with a characteristic distance of R-o = 2.7 nm.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20201 - Electrical and electronic engineering

Project
<a href="/en/project/EF15_003%2F0000464" target="_blank" >EF15_003/0000464: Centre of Advanced Photovoltaics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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