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42. Multiresponsive nonvolatile memories based on optically switchable ferroelectric organic field-effect transistorsMarco Carroli, Alex Dixon, Martin Herder, Egon Pavlica, Stefan Hecht, Gvido Bratina, Emanuele Orgiu, Paolo Samorì, 2021, izvirni znanstveni članek Opis: Organic transistors are key elements for flexible, wearable, and biocompatible logic applications. Multiresponsivity is highly sought‐after in organic electronics to enable sophisticated operations and functions. Such a challenge can be pursued by integrating more components in a single device, each one responding to a specific external stimulus. Here, the first multiresponsive organic device based on a photochromic–ferroelectric organic field‐effect transistor, which is capable of operating as nonvolatile memory with 11 bit memory storage capacity in a single device, is reported. The memory elements can be written and erased independently by means of light or an electric field, with accurate control over the readout signal, excellent repeatability, fast response, and high retention time. Such a proof of concept paves the way toward enhanced functional complexity in optoelectronics via the interfacing of multiple components in a single device, in a fully integrated low‐cost technology compatible with flexible substrates.
Ključne besede: organic transistors, memory, time-dependent
Objavljeno v RUNG: 11.03.2021; Ogledov: 2017; Prenosov: 0
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43. MULTIPLE TEMPORALITIES OF THE PARTISAN STRUGGLEGal Kirn, 2014, samostojni znanstveni sestavek ali poglavje v monografski publikaciji Ključne besede: multistability, parallax view, multiple temporality, revolutionary time, partisan poetry, WW2, partisan art, determination, alternative world
Objavljeno v RUNG: 21.08.2020; Ogledov: 2547; Prenosov: 0
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45. The role of charge transfer at reduced graphene oxide/organic semiconductor interface on the charge transport propertiesGvido Bratina, Egon Pavlica, 2019, izvirni znanstveni članek Opis: The effect of 1-pyrenesulfonicacid sodium salt (1-PSA), tetracyanoethylene (TCNE) and tetrafluoro- tetracyanoquinodimethane (F4-TCNQ) on charge transport properties of reduced graphene oxide (RGO) is examined by measuring the transfer characteristics of field-effect transistors and co-planar time-of-flight photocurrent technique. Evidence of p-type doping and a reduction of mobility of electrons in RGO upon deposition of these materials is observed. Time-resolved photocurrent measurements show a reduction in elec- tron mobility even at submonolayer coverage of these materials. The variation of transit time with different coverages reveals that electron mobility decreases with increasing the surface coverage of 1-PSA, TCNE and F4- TCNQ to a certain extent, while at higher coverage the electron mobility is slightly recovered. All three molecules show the same trend in charge carrier mobility variation with coverage, but with different magnitude. Among all three molecules, 1-PSA acts as weak electron acceptor compared to TCNE and F4-TCNQ. The additional fluorine moieties in F4-TCNQ provides excellent electron withdrawing capability compared to TCNE. The experimental results are consistent with the density functional theory calculations.
Ključne besede: organic semiconductors, reduced graphene oxide, time-resolved photocurrent measurements, organic thin film transistors
Objavljeno v RUNG: 28.10.2019; Ogledov: 3579; Prenosov: 1
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46. On the Cost of Scalar Implicatures : An Eye-Tracking StudyGreta Mazzaggio, Anne Reboul, Chiara Caretta, Mélody Darblade, Jean-Baptiste van der Henst, Anne Cheylus, Penka Stateva, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: scalar implicature, reaction time, eye-tracking, sentence evaluation task
Objavljeno v RUNG: 02.09.2019; Ogledov: 3127; Prenosov: 0
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47. Evaluation and Improvement of Lidar Performance Based on Temporal and Spatial Variance CalculationFei Gao, Xinxin Xu, Qingsong Zhu, Li Wang, Tingyao He, Longlong Wang, Samo Stanič, Dengxin Hua, 2019, izvirni znanstveni članek Ključne besede: spatial variance, temporal variance, analog data, photon-counting data, dead time, threshold voltage, linear working range, data gluing
Objavljeno v RUNG: 06.05.2019; Ogledov: 3381; Prenosov: 0
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50. Characterisation of charge carrier transport in thin organic semiconductor T layers by time-of-flight photocurrent measurementsGvido Bratina, Egon Pavlica, 2019, pregledni znanstveni članek Opis: The paper reviews recent advances in characterisation of charge carrier transport in organic semiconductor layers by time-of-flight photocurrent measurements, with the emphasis on the measurements of the samples with co-planar electrodes. These samples comprised an organic semiconductor layer whose thickness is on the order of a μm or less, and thus mimic the structures of organic thin film transistors. In the review we emphasise the importance of considering spatial variation of electric field in these, essentially two-dimensional structures, in interpretation of photocurrent transients. We review the experimental details of this type of measurements and give examples that demonstrate exceptional sensitivity of the method to minute concentration of electrically active defects in the organic semiconductors as well as the capability of probing charge transport along the channels of different mobility that reside in the same sample.
Ključne besede: organic semiconductors, time of flight, mobiulity
Objavljeno v RUNG: 24.10.2018; Ogledov: 3726; Prenosov: 0
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