Exciton diffusion length in some thermocleavable polythiophenes by the surface photovoltage method

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10124327" target="_blank" >RIV/00216208:11320/12:10124327 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.synthmet.2011.10.008" target="_blank" >http://dx.doi.org/10.1016/j.synthmet.2011.10.008</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.synthmet.2011.10.008" target="_blank" >10.1016/j.synthmet.2011.10.008</a>

Result language
angličtina
Original language name
Exciton diffusion length in some thermocleavable polythiophenes by the surface photovoltage method
Original language description
Poly-3-(2-methylhexyloxycarbonyl) dithiophene (P3MHOCT), poly-3-carboxydithiophene (P3CT) and polythiophene (PT) polymers were studied by optical and optoelectronic methods to find diffusion length as one of the important parameters characterizing them as candidates for solar cells. Their important property is that P3MHOCT can serve as a precursor which, after thermal annealing, converts into more rigid and insoluble P3CT and further thermal treatment produces native unsubstituted PT. Ellipsometric measurement yielded data on the thickness of the spin coated layers; absorption coefficients were obtained from transmittance and reflectance spectra. Our method of surface photovoltage extended to thin semiconducting layers was utilized for extraction of diffusion length of photogenerated excitons. Higher diffusion lengths in P3CT and PT materials as compared with that in P3MHOCT can probably be ascribed to the increase of the crystalline fraction. The highest diffusion length was found in
Czech name
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Czech description
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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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Project
<a href="/en/project/GA202%2F09%2F1206" target="_blank" >GA202/09/1206: Nanocrystalline heterogeneous photovoltaic solar cells</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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