Thin film transistors gas sensors based on reduced graphene oxide poly(3-hexylthiophene) bilayer film for nitrogen dioxide detection

P1FW.3 - Flexible organic thin-film transistors NO2 sensors based on poly(3-hexylthiophene)/graphene composite films

“…Fig.5 (b) and (c) exhibits Raman spectra of films. Two strong peaks at 1379 and 1448 cm 1 can be observed, corresponding to C C and C=C of a thiophene ring, respectively [4]. The Raman spectra of composite films contain peaks at 1345 and1588 cm 1 , they are the D and G characteristic peaks of graphene.…”

Functionalized polythiophenes: Recognition materials for chemosensors and biosensors of superior sensitivity, selectivity, and detectability

“…Similarly, materials with high surface area, such as carbon allotropes and different nanoparticles (NPs), were engaged with PTs for VOCs sensing [107][108][109][110][111]. A simple hybrid chemFET sensor (Fig.…”

Analysis of Nitrogen Dioxide in Environment

“…When reduced graphene oxide is sprayed withasoluble semiconducting polymer, a double-layered sensing film is formed. Xie et al [33] reported that the use of poly-(3-hexylthiophene) (P3HT), which is a p type semiconducting polymer, can enhance the gas sensing properties (Figure 6). The double-layered material was constructed on an existing organic thin film transistor (OTFT) sensor platform.…”

“…P3HT and/or Graphene layers were applied to the OTFT substrate using an air brushing technique. Response of graphene/P3HT double layer gas sensing material [33] (re-printed with permission). The response to exposure of NO 2 showed a very interesting three-stage curve, the rapid response, the slow response and the recovery, especially at higher concentrations of NO 2 .…”