Influence of near UV irradiation on ZnO nanomaterials NO2 gas sensing properties

Marcin Procek; Agnieszka Stolarczyk

doi:10.1117/12.2503471

14 August 2018 Influence of near UV irradiation on ZnO nanomaterials NO₂ gas sensing properties

Marcin Procek, Agnieszka Stolarczyk

Proceedings Volume 10830, 13th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods; 108300P (2018) https://doi.org/10.1117/12.2503471
Event: Thirteenth Integrated Optics: Sensors, Sensing Structures and Methods Conference, 2018, Szcyrk, Poland

Abstract

The paper presents gas sensors based on ZnO nanostructures, which were obtained from zinc acetate in a very simple and repeatable process. Obtained structures were characterised using Raman spectroscopy and scanning electron microscopy. The ZnO nanostructures were applied as receptor layers in chemoresistive gas sensors onto interdigital transducers, using drop-coating. Sensor responses to low concentrations (1 ppm) of NO₂ in the air, at different operating temperatures (room temperature 23°C (R.T.), 100°C and 200°C) and under different lighting conditions (dark conditions and UV irradiation – LED λ = 390 nm) are compared and discussed. Obtained results show that proper combination of elevated temperature and illumination by UV can improve sensor properties and allow it to operate at a lower temperature.

Citation Download Citation

Marcin Procek and Agnieszka Stolarczyk "Influence of near UV irradiation on ZnO nanomaterials NO₂ gas sensing properties", Proc. SPIE 10830, 13th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods, 108300P (14 August 2018); https://doi.org/10.1117/12.2503471

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