Optical, Electrical and Gas Sensing Properties of the MnCo<sub>2</sub>O<sub>4</sub> Thin Films
By spray pyrolysis of aqueous solutions of $=350{ }^{\circ} \mathrm{C}$, p-type MnCo<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>O<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> thin films with specific resistance $\rho$ $=530 \Omega \cdot \mathrm{~cm}^{2}$ were obtained. MnCo<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>O<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> films have a transmission coefficient $T \approx 23\%$ and direct optical transitions are realized in them. The optical band gap of MnCo<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>O<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> films $E_{g}=1.3 \mathrm{eV}$. Films exhibit sensory properties in gas environments of acetone and ethanol - the resistance of the films decreases by an order of magnitude.
Authors
- I. G. Orletskyi (ORCID: https://orcid.org/0000-0001-5202-8353)
- I. P. Koziarskyi (ORCID: https://orcid.org/0000-0002-4984-4349)
- D. P. Koziarskyi (ORCID: https://orcid.org/0000-0002-9618-0418)
- Э. В. Майструк
Institutions
- Yuriy Fedkovych Chernivtsi National University (UA)
Publication Details
- Published
- 2024-09-08
- DOI
- https://doi.org/10.1109/nap62956.2024.10739681
- Citations
- 1
- Primary Topic
- Gas Sensing Nanomaterials and Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.21