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5. Transient photocurrents in oligothiophene-based ultrathin film transistorsEgon Pavlica, Robert Hudej, Gvido Bratina, M. Leufgen, U. Bass, J. Geurts, L. W. Molenkamp, T. Muck, V. Wagner, 2004, objavljeni povzetek znanstvenega prispevka na konferenci Najdeno v: osebi
Objavljeno: 15.10.2013; Ogledov: 5893; Prenosov: 35
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8. Study of initial growth of pentacene on grapheneManisha Chhikara, 2014, doktorska disertacija Najdeno v: osebi
Ključne besede: organski polprevodniki, tanke plasti, pentacen, grafen, epitaksija z molekularnimi curki, mikroskopija na atomsko silo, nukleacija, disertacije
Objavljeno: 22.01.2015; Ogledov: 5449; Prenosov: 168
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9. Electronic transport properties of graphene and graphene-related materialsSrinivasa Rao Pathipati, 2014, doktorska disertacija Najdeno v: osebi
Ključne besede: grafen, reduciran grafenov oksid, transport naboja, čas preleta, organski tranzistor, adsorbati, dopiranje, zmesi, perileni, politiofeni, grafenski nanotrakovi, disertacije
Objavljeno: 22.01.2015; Ogledov: 4688; Prenosov: 344
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Gradivo ima več datotek! Več...
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10. Transport električnega naboja v organskih polprevodnikih, simulacija po metodi Monte CarloRobert Hudej, Gvido Bratina, Egon Pavlica, 2003, izvirni znanstveni članek Opis: The electric-charge transport in organic semiconductors is essentially different to the transport in ordered inorganic crystals. The reason is in thelocalization of the energy states, which act as charge-carrier transport channels between molecules. Consequently, the determination of the basic transport parameters in organic materials is inherently more involved than in their inorganic counterparts. The analytical methods that are used to describe charge transport in inorganic materials are unsuitable, since they are based on the extended electronic energy structure. We report here on the simulation of charge transport in organic semiconductor thin films. The simulation is based on the Monte Carlo method and describes the charge-carrier transport within the framework of carrier hopping between the sites. We employed a Gaussian energy distribution of the hopping sites with disorder elements. The degree of disorder is characterized by the width of the Gaussian distribution and is measured in eV units. The results of the transport simulation in 3,4,9,10-perylenedianhydride tetracarboxylic acid (PTCDA) show that the photogenerated charge-carrier current depends on the film thickness, temperature and disorder degree. The simulated photocurrents have the same amplitude in thick films as in the thin films, but the overall shape of the I(t) curve is more dispersive in thin films. The charge-carrier mobility decreases with the increasing degree of disorder at a given temperature. The simulation of the photogenerated positive charge carriers current matches with the time-of-flight experiment in a glass/ITO/PTCDA(600 nm)/In heterostructure at room temperature and an applied bias voltage of 8 V.
Najdeno v: osebi
Ključne besede: neurejeni kristali, metoda Monte Carlo, organski polprevodniki, transport naboja, PTCDA, tranzientne meritve
Objavljeno: 10.07.2015; Ogledov: 5124; Prenosov: 18
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