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1.
The influence of LiF layer and ZnO nanoparticles addings on the performances of flexible photovoltaic cells based on polymer blends
A. Radu, Gvido Bratina, 2011, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ... organski polprevodniki, organske sončne celice, nanodelci, ...
Ključne besede: organski polprevodniki, organske sončne celice, nanodelci
Objavljeno: 15.10.2013; Ogledov: 2617; Prenosov: 10
URL Polno besedilo (0,00 KB)

2.
Initial stages of organic semiconductor thin film growth
Primož Rebernik Ribič, 2009, doktorska disertacija

Najdeno v: ključnih besedah
Povzetek najdenega: ... organski polprevodniki, tanke plasti, stopničaste površine, naparevanje, mikroskopija...
Ključne besede: organski polprevodniki, tanke plasti, stopničaste površine, naparevanje, mikroskopija na atomsko silo, disertacije
Objavljeno: 15.10.2013; Ogledov: 2670; Prenosov: 40
URL Polno besedilo (0,00 KB)
Gradivo ima več datotek! Več...

3.
Comparisson between indium tin-oxide and fluorine-doped tin-oxide as substrates for organic light emitting diodes
Peter Krkoč, 2008, magistrsko delo

Najdeno v: ključnih besedah
Povzetek najdenega: ... organski polprevodniki, organske svetleče diode, življenjska doba, magistrske...
Ključne besede: organski polprevodniki, organske svetleče diode, življenjska doba, magistrske naloge
Objavljeno: 15.10.2013; Ogledov: 2642; Prenosov: 176
URL Polno besedilo (0,00 KB)
Gradivo ima več datotek! Več...

4.
Study of initial growth of pentacene on graphene
Manisha Chhikara, 2014, doktorska disertacija

Najdeno v: ključnih besedah
Povzetek najdenega: ... organski polprevodniki, tanke plasti, pentacen, grafen, epitaksija z...
Ključne besede: organski polprevodniki, tanke plasti, pentacen, grafen, epitaksija z molekularnimi curki, mikroskopija na atomsko silo, nukleacija, disertacije
Objavljeno: 22.01.2015; Ogledov: 2572; Prenosov: 31
.pdf Polno besedilo (6,24 MB)

5.
Transport električnega naboja v organskih polprevodnikih, simulacija po metodi Monte Carlo
Robert 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: ključnih besedah
Povzetek najdenega: ...neurejeni kristali, metoda Monte Carlo, organski polprevodniki, transport naboja, PTCDA, tranzientne meritve, ...
Ključne besede: neurejeni kristali, metoda Monte Carlo, organski polprevodniki, transport naboja, PTCDA, tranzientne meritve
Objavljeno: 10.07.2015; Ogledov: 2231; Prenosov: 5
URL Polno besedilo (0,00 KB)

6.
Effect of water layer at the SiO[sub]2/graphene interface on pentacene morphology
Egon Pavlica, Gvido Bratina, Manisha Chhikara, Radoš Gajić, Aleksandar Matković, 2014, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...grafen, mikroskopija, atomska sila, organski polprevodniki, tanki sloji, ...
Ključne besede: grafen, mikroskopija, atomska sila, organski polprevodniki, tanki sloji
Objavljeno: 16.06.2016; Ogledov: 1737; Prenosov: 51
URL Polno besedilo (0,00 KB)

7.
Fast-Response Photonic Device Based on Organic-Crystal Heterojunctions Assembled into a Vertical-Yet-Open Asymmetric Architecture
Lei Zhang, Pavlica Egon, Zhong, Xiaolan, Liscio Fabiola, LI Songlin, Bratina Gvido, Orgiu Emanuele, Samori Paolo, 2017, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ... organski polprevodniki, merjenja časa preleta, organski fotodetektorji...
Ključne besede: organski polprevodniki, merjenja časa preleta, organski fotodetektorji
Objavljeno: 24.01.2017; Ogledov: 1197; Prenosov: 0
.pdf Polno besedilo (730,50 KB)
Gradivo ima več datotek! Več...

8.
Self-Suspended Nanomesh Scaffold for Ultrafast Flexible Photodetectors Based on Organic Semiconducting Crystals
Gvido Bratina, Egon Pavlica, 2018, izvirni znanstveni članek

Opis: Self-standing nanostructures are of fundamental interest in materials sci- ence and nanoscience and are widely used in (opto-)electronic and photonic devices as well as in micro-electromechanical systems. To date, large-area and self-standing nanoelectrode arrays assembled on flexible substrates have not been reported. Here the fabrication of a hollow nanomesh scaffold on glass and plastic substrates with a large surface area over 1 mm2 and ultralow leakage current density (≈1–10 pA mm−2 @ 2 V) across the empty scaffold is demonstrated. Thanks to the continuous sub-micrometer space formed in between the nanomesh and the bottom electrode, highly crystalline and dendritic domains of 6,13-bis(triisopropylsilylethinyl)pentacene growing within the hollow cavity can be observed. The high degree of order at the supramolecular level leads to efficient charge and exciton transport; the pho- tovoltaic detector supported on flexible polyethylene terephthalate substrates exhibits an ultrafast photoresponse time as short as 8 ns and a signal-to- noise ratio approaching 105. Such a hollow scaffold holds great potential as a novel device architecture toward flexible (opto-)electronic applications based on self-assembled micro/nanocrystals.
Najdeno v: ključnih besedah
Povzetek najdenega: ...nanostrukture, organski polprevodniki, fotonapetostne komponente...
Ključne besede: nanostrukture, organski polprevodniki, fotonapetostne komponente
Objavljeno: 22.05.2018; Ogledov: 719; Prenosov: 0
.pdf Polno besedilo (2,52 MB)

9.
The effect of polymer molecular weight on the performance of PTB7-Th:O-IDTBR non-fullerene organic solar cells
Sebastian F. Hoefler, Egon Pavlica, Gvido Bratina, 2018, izvirni znanstveni članek

Opis: Recent advances in the development of non-fullerene acceptors have increased the power conversion efficiency of organic solar cells to approximately 13%. Fullerene-derivatives and non-fullerene acceptors possess distinctively different structural, optical and electronic properties, which also change the requirements on the polymer donor in non-fullerene organic solar cells. Therefore, in this study, the effect of the molecular weight of the conjugated polymer on the photovoltaic performance, charge carrier mobility, crystallization properties, film morphology, and non-geminate recombination dynamics is systematically investigated in polymer:small molecule organic solar cells using the low bandgap polymer PTB7-Th as the donor and the non-fullerene indacenodithiophene-based small molecule O-IDTBR as the acceptor. Among the examined polymer samples (50–300 kDa), high molecular weights of PTB7-Th (with an optimum molecular weight of 200 kDa) are advantageous to achieve high efficiencies up to 10%, which can be correlated with an increased crystallinity, an improved field-effect hole mobility (1.05 × 10−2 cm2 V−1 s−1), lower charge carrier trapping and a reduced activation energy of charge transport (98 meV). Bias-assisted charge extraction and transient photovoltage measurements reveal higher carrier concentrations (1016 cm−3) and long lifetimes (4.5 μs) as well as lower non-geminate recombination rate constants in the corresponding devices, supporting the high photocurrents (ca. 15.2 mA cm−2) and fill factors (>60%).
Najdeno v: ključnih besedah
Povzetek najdenega: ... organski polprevodniki, gibljivost, organske sončne celice...
Ključne besede: organski polprevodniki, gibljivost, organske sončne celice
Objavljeno: 28.05.2018; Ogledov: 975; Prenosov: 0
.pdf Polno besedilo (997,85 KB)

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