5 May 2015 Hybrid organic-inorganic semiconductor transducer for optical and electrical sensing
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Porous silicon (PSi) non-symmetric multilayers 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 (optical and electrical) signal sensor for biochemical monitoring. PDIF-CN2 modified PSi optical microcavities show an increase of about 5 orders of magnitude in electric current with respect to the same bare device. This feature can be used to sense volatile substances.
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A. Caliò, A. Cassinese, M. Casalino, J. Politi, M. Barra, L. De Stefano, "Hybrid organic-inorganic semiconductor transducer for optical and electrical sensing", Proc. SPIE 9506, Optical Sensors 2015, 95061R (5 May 2015); doi: 10.1117/12.2178017; https://doi.org/10.1117/12.2178017

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