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Funkční polymery s fotoelektrickou odezvou
Nešpůrek, Stanislav
Polymeric electronic devices have aroused increasing interest because of their potential low-cost applications, easy processing, possibility of modifications of their chemical structures and good compatibility with a variety of substrates. Many electrical and optical devices based on polymers can be mentioned: fuel cells, gas sensors, field-effect transistors, optical memories, information displays, hole/burning memories, lasers, etc.
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Ftalocyaniny jako materiály pro elektroniku
Nešpůrek, Stanislav
Phthalocyanines play an important role as low-gap semiconducting materials. Many electrical and optical applications are possible like xerographic media, dynamic holographic memories, information displays, optical imaging, and photodielectric elements.
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Funkční polymery pro aplikace v solárních článcích
Pfleger, Jiří ; Pavlík, Martin ; Hebestreit, N. ; Plieth, W.
Two alternative systems of polymer based solar cell structures were prepared: 1) based on the acceptor modified .pi.-conjugated polymer and 2) composed of a functional polymer - inorganic semiconductor nanocomposite, and their photoelectrical properties were tested. The simple electrodeposition method, providing a large area heterojunction distributed within a bulk of the polymer nanocomposite, was developed.
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Přepínání v molekulárních systémech
Nešpůrek, Stanislav ; Wang, Geng ; Sworakowski, J.
A general approach to electrical and optical switching based on molecular materials is put forward, namely, switching based on photochromism, redox reactions, photoconductivity and charge carrier trapping. The physical and chemical background on a novel type of a switch, based on charge-dipole interactions, is discussed in details.
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Vodivé filmy poly[(ethylendioxy)thiofénu]
Biler, B. ; Vrbová, H. ; Nešpůrek, Stanislav
Poly[3,4-(ethylenedioxy)thiophene] films were prepared by oxidative polymerization using iron(III) tosylate in alcoholic medium. The films form two types of layers; the first deposited, insoluble layer shows AC electrical conductivity ranging from 35 to 40.S.cm.sup.-1./sup., the top, soluble layer shows a much higher conductivity.
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