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Enhanced visible light-activated gas sensing properties of nanoporous copper oxide thin films

Abstrakt

Metal oxide gas sensors are popular chemoresistive sensors. They are used for numerous tasks, including environmental and safety monitoring. Some gas-sensing materials exhibit photo-induced properties that can be utilized for enhanced gas detection by modifying the sensor selectivity and sensitivity when illuminated by light. Here, we present the gas sensing characteristics of highly nanoporous Cu2O thin films towards both electrophilic (NO2) and nucleophilic (C2H5OH, NH3) gas molecules under ambient temperature and modulated by visible light illumination of different colors (red: 632 nm, green: 530 nm, blue: 468 nm). Cu2O films were fabricated by reactive advanced gas deposition (AGD) technology. The surface and structural analysis of the samples confirm the deposition of nanoporous thin films of mixed copper oxide phases. The gas sensing property of Cu2O exhibited expected p-type semiconductor behavior upon electrophilic and nucleophilic gas exposures. Our results show that visible light illumination provides enhanced sensor response.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
SOLAR ENERGY MATERIALS AND SOLAR CELLS nr 273,
ISSN: 0927-0248
Język:
angielski
Rok wydania:
2024
Opis bibliograficzny:
Kwiatkowski A., Smulko J., Drozdowska K.: Enhanced visible light-activated gas sensing properties of nanoporous copper oxide thin films// SOLAR ENERGY MATERIALS AND SOLAR CELLS -Vol. 273, (2024),
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.solmat.2024.112940
Źródła finansowania:
  • This work was funded by the National Science Centre, Poland, under the research project 2019/35/B/ST7/02370, “System of gas detection by two-dimensional materials,” and partially funded by the H2020-MSCA-RISE project “CanLeish” (grant no. 101007653).
Weryfikacja:
Politechnika Gdańska

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