Hybrid organic-inorganic porous semiconductor transducer for multi-parameters sensing

Alessandro Caliò; Antonio Cassinese; Maurizio Casalino; Ilaria Rea; Mario Barra; Fabio Chiarella; Luca De Stefano

doi:10.1098/rsif.2014.1268

Hybrid organic-inorganic porous semiconductor transducer for multi-parameters sensing

J R Soc Interface. 2015 Jul 6;12(108):20141268. doi: 10.1098/rsif.2014.1268.

Authors

Alessandro Caliò¹, Antonio Cassinese², Maurizio Casalino³, Ilaria Rea³, Mario Barra⁴, Fabio Chiarella⁴, Luca De Stefano⁵

Affiliations

¹ IMM-CNR, Via P. Castellino 111, Naples 80131, Italy Department of Physics, University of Naples 'Federico II', Via Cinthia, Naples 80100, Italy.
² Department of Physics, University of Naples 'Federico II', Via Cinthia, Naples 80100, Italy.
³ IMM-CNR, Via P. Castellino 111, Naples 80131, Italy.
⁴ CNR-SPIN, University of Naples 'Federico II', Piazzale Tecchio 80, Naples 80125, Italy.
⁵ IMM-CNR, Via P. Castellino 111, Naples 80131, Italy luca.destefano@na.imm.cnr.it.

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.

Keywords: N,N′-1H,1H-perfluorobutyldicyanoperylene-carboxydi-imide; optical and electrical transducer; porous silicon.

MeSH terms

Electrochemical Techniques / methods*
Imides*
Models, Chemical*
Porosity
Semiconductors*

Substances

Imides