Impact of UV radiation on sensing properties of conductive polymer and ZnO blend for NO2 gas sensing at room temperature

Kałużyński, Piotr; Procek, Marcin; Stolarczyk, Agnieszka

doi:10.4302/plp.v11i3.911

Cited by 2 publications

(1 citation statement)

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“…This polymer is of particular interest because it exhibits a large hole mobility and strong photoconductivity [18]. Consequently, its sensing properties can be enhanced by the light [19]. In a previous work [20], we presented the preliminary results of our investigations of the capability of RR-P3HT-activated using white light-of detecting DMMP.…”

Section: Introductionmentioning

confidence: 99%

Study of Light-Activated Regioregular Poly(3-Hexyltiophene) Photoconductive Polymer Sensing Properties in Nerve Agent Simulant (DMMP) Detection

Powroźnik

Jakubik

Stolarczyk

et al. 2020

Sensors

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In the present work, we report the use of regioregular poly(3-hexyltiophene) polymer (RR-P3HT) as a potential light-activated material for sensing the chemical nerve agent simulant dimethyl methylphosphonate (DMMP). The electrical response of thick films of RR-P3HT, deposited by spray-coating method onto a porous laminate substrate at room temperature, to DMMP vapours was investigated. The studied material was activated by light-emitting diodes that emitted light of different wavelengths. The sensing properties of RR-P3HT are considerably enhanced upon exposure to blue and yellow light. However, excitation by the low wavelength light (blue) caused degeneration of the material, resulting in lowered stability. In the case of the yellow light, degeneration was much slower and the limit of detection was 0.4 ppm. The studied material exhibited high selectivity, as it did not respond to 6 ppm of acetone and methanol vapours.

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Section: Introductionmentioning

confidence: 99%