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Ricciardella, F. (author), Nigro, Maria Arcangela (author), Miscioscia, Riccardo (author), Miglietta, Maria Lucia (author), Polichetti, Tiziana (author)In this study, we investigate a Schottky junction based on solution-processed multilayered graphene (MLG). We present a rectifying device obtained with a straightforward approach, that is drop-casting a few microliters of MLG solution simultaneously onto Si, Si-SiO2 and Si-SiO2-Cr/Au surface. Monitoring the modulation of Schottky barrier...journal article 2021
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Morelli, L. (author), Ricciardella, F. (author), Koole, Max (author), Persijn, Stefan (author), Vollebregt, S. (author)A novel gas sensor based on multi-layered graphene (MLG) functionalised with gold nanoparticles (Au-NPs) is presented. We demonstrate for the first time that: (1) the signal saturates during the analyte exposure, something which does not occur in the pristine material and in graphene-based gas sensors in general; (2) the sign of the device...conference paper 2020
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Ricciardella, F. (author), Polichetti, Tiziana (author), Vollebregt, S. (author), Alfano, Brigida (author), Massera, Ettore (author), Sarro, Pasqualina M (author)Limitations such as lack of detected stationary signal and slow signal recovery after detection currently affect graphene-based chemi-sensors operating at room temperature. In this work, we model the behavior of a sensor in a test chamber having limited volume and simulating the environmental conditions. From this model, we mathematically derive...journal article 2019
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Low Temperature CVD Grown Graphene for Highly Selective Gas Sensors Working under Ambient ConditionsRicciardella, F. (author), Vollebregt, S. (author), Polichetti, T. (author), Alfano, B. (author), Massera, E. (author), Sarro, Pasqualina M (author)In this paper we report on gas sensors based on graphene grown by Chemical Vapor Deposition at 850 °C. Mo was used as catalyst for graphene nucleation. Resistors were directly designed on pre-patterned Mo using the transfer-free process we recently developed, thus avoiding films damage during the transfer to the target substrate. Devices...conference paper 2017