| Literature DB >> 26063814 |
Alessandro Caliò1, Antonio Cassinese2, Maurizio Casalino3, Ilaria Rea3, Mario Barra4, Fabio Chiarella4, Luca De Stefano5.
Abstract
Porous silicon (PSi) non-symmetric multi-layers are modified by organic molecular beam deposition of an organic semiconductor, namely the N,N'-1H,1H-perfluorobutyldicyanoperylene-carboxydi-imide (PDIF-CN2). Joule evaporation of PDIF-CN2 into the PSi sponge-like matrix not only improves but also adds transducing skills, making this solid-state device a dual signal sensor for chemical monitoring. PDIF-CN2 modified PSi optical microcavities show an increase of about five orders of magnitude in electric current with respect to the same bare device. This feature can be used to sense volatile substances. PDIF-CN2 also improves chemical resistance of PSi against alkaline and acid corrosion.Entities:
Keywords: N,N′-1H,1H-perfluorobutyldicyanoperylene-carboxydi-imide; optical and electrical transducer; porous silicon
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Year: 2015 PMID: 26063814 PMCID: PMC4528572 DOI: 10.1098/rsif.2014.1268
Source DB: PubMed Journal: J R Soc Interface ISSN: 1742-5662 Impact factor: 4.118