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1.
Structure-property relationships of curved aromatic materials from first principles
Layla Martin-Samos, Laura Zoppi, Kim K. Baldridge, 2014, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ... organic molecules, organic crystals, many-body perturbation theory, optical...
Ključne besede: organic molecules, organic crystals, many-body perturbation theory, optical properties
Objavljeno: 16.06.2016; Ogledov: 1579; Prenosov: 71
URL Polno besedilo (0,00 KB)

2.
Negative field‐dependent charge mobility in crystalline organic semiconductors with delocalized transport
Andrey Kadashchuk, Egon Pavlica, Gvido Bratina, Fei Tong, 2018, izvirni znanstveni članek

Opis: Charge-carrier mobility has been investigated by time-of-flight (TOF) transient photocurrent in a lateral transport con- figuration in highly crystalline thin films of 2,7-dioctyl[1]benzothieno [3,2-b][1] benzothiophene (C8-BTBT) grown by a zone-casting alignment technique. High TOF mobility has been revealed that it is consistent with the delocalized nature of the charge transport in this material, yet it featured a positive temperature dependence at T ≥ 295 K. Moreover, the mobility was surprisingly found to decrease with electric field in the high-temperature region. These observations are not compat- ible with the conventional band-transport mechanism. We have elaborated an analytic model based on effective-medium approximation to rationalize the puzzling findings. The model considers the delocalized charge transport within the energy landscape formed by long-range transport band-edge variations in imperfect organic crystalline materials and accounts for the field-dependent effective dimensionality of charge transport percolative paths. The results of the model calculations are found to be in good agreement with experimental data.
Najdeno v: ključnih besedah
Ključne besede: time of flight, organic semiconductors, single crystals
Objavljeno: 07.05.2018; Ogledov: 1671; Prenosov: 0
.pdf Polno besedilo (2,01 MB)

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