Lei Zhang (Author), Xiaolan Zhong (Author), Egon Pavlica (Author), Songlin Li (Author), Alexander Klekachev (Author), Gvido Bratina (Author), Thomas W. Ebbesen (Author), Emanuele Orgiu (Author), Paolo Samorì (Author)

Abstract

Supramolecular organic nanowires are ideal nanostructures for optoelectronics because they exhibit both efficient exciton generation as a result of their high absorption coefficient and remarkable light sensitivity due to the low number of grain boundaries and high surface-to-volume ratio. To harvest photocurrent directly from supramolecular nanowires it is necessary to wire them up with nanoelectrodes that possess different work functions. However, devising strategies that can connect multiple nanowires at the same time has been challenging. Here, we report a general approach to simultaneously integrate hundreds of supramolecular nanowires of N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) in a hexagonal nanomesh scaffold with asymmetric nanoelectrodes. Optimized PTCDI-C8 nanowire photovoltaic devices exhibit a signal-to-noise ratio approaching 107, a photoresponse time as fast as 10 ns and an external quantum efficiency >55%. This nanomesh scaffold can also be used to investigate the fundamental mechanism of photoelectrical conversion in other low-dimensional semiconducting nanostructures.

Keywords

fotodetektorji;organski polprevodniki;fotoprevodnost;organski kristali;elektronske komponente;nanožice;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UNG - University of Nova Gorica
UDC: 53
COBISS: 4524283 Link will open in a new window
ISSN: 1748-3387
Parent publication: Nature nanotechnology
Views: 4736
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Other data

URN: URN:SI:UNG
Type (COBISS): Not categorized
Pages: str. 900-906
Volume: ǂVol. ǂ11
Issue: ǂno. ǂ10
Chronology: Jul. 2016
DOI: 10.1038/nnano.2016.125
ID: 9175689