Lei Zhang (Author), N. Pastukhova (Author), Egon Pavlica (Author), Gvido Bratina (Author)

Abstract

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.

Keywords

nanostrukture;organski polprevodniki;fotonapetostne komponente;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UNG - University of Nova Gorica
UDC: 539
COBISS: 5153531 Link will open in a new window
ISSN: 0935-9648
Views: 2996
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Other data

URN: URN:SI:UNG
Type (COBISS): Not categorized
Pages: str. 1801181-1-1801181-7
Volume: ǂVol. ǂ30
Issue: ǂiss. ǂ28
Chronology: July 2018
DOI: 10.1002/adma.201801181
ID: 10936274