Time-Resolved Sensitivity of a Cadmium-Doped Copper Oxide Thin Film as a Chlorine Gas Detector

• Autorzy: Alotibi Turki , Shirbeeny Waleed , Alshahrie Ahmed , Aida Mohammed , Iqbal Jawid

Identyfikatory

DOI

10.12913/22998624/185270

• Języki publikacji: EN

Abstrakty

EN

Due to its strong affinity for chlorine gas, Cd can potentially form CdCl2. Cd-doped CuO thin films are sensitive to chlorine gas, as careful inclusion of Cd in the CuO crystal structure modifies the energy gap depending on the dopant concentration. We employed spray pyrolysis to deposit Cd-doped CuO on FTO (Fluorine Tin Oxide) while heating the substrate to 500 oC. The XRD (X-ray Diffraction) analysis revealed that Cd was interstitially incorporated in the CuO lattice structure, as verified by SEM (Scanning Electron Microscopy imaging). The photoluminescence study demonstrated that increasing the Cd concentration in CuO resulted in higher emission intensity, providing valuable insights into Cu2+ and O2- energy levels. Exposing a Cd-doped CuO thin film to chlorine gas modifies the bandgap, depending on the Cd concentration. The fluctuation in the bandgap energy of copper oxide doped with cadmium indicates the chlorine gas concentration nearby. Time-resolved measurements for the I-V characteristics of the thin film revealed considerable current variation during the exposure to chlorine gas.

Słowa kluczowe

EN

sensor; bandgap; affinity; spray pyrolysis; time-resolved measurements

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2024
• Tom: Vol. 18, no 2
• Strony: 365--373
• Opis fizyczny: Bibliogr. 36 poz., fig.

Twórcy

autor

Alotibi Turki

• Department of Physics, King Abdulaziz University, Jeddah, Saudi Arabia

• https://orcid.org/0009-0001-1957-2901

autor

Shirbeeny Waleed

• Department of Physics, King Abdulaziz University, Jeddah, Saudi Arabia

• https://orcid.org/0000-0002-1368-7273

autor

Alshahrie Ahmed

• Department of Physics, King Abdulaziz University, Jeddah, Saudi Arabia

• https://orcid.org/0000-0001-9590-5942

autor

Aida Mohammed

• Department of Physics, King Abdulaziz University, Jeddah, Saudi Arabia

autor

Iqbal Jawid

• Center of Nanotechnology, King Abdulaziz University, Jeddah, Saudi Arabia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).