Journal
SURFACES AND INTERFACES
Volume 37, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.surfin.2023.102702
Keywords
Glucose sensor; Biosensor; Thin film; Copper oxides
Ask authors/readers for more resources
The glucose sensitivity of a non-enzymatic sensor is affected by the thickness of the thin-film, which depends on the conductivity and roughness of the film. Copper oxide films grown by spray pyrolysis were used to study the effect of thin-film thickness. It was found that increasing the film thickness up to 434 nm improved the signal stability and sensitivity, but beyond that thickness, the sensitivity started to decrease gradually.
Thin-film thickness effect on glucose sensitivity for a non-enzymatic sensor is affected by two main factors, film ' s conductivity, and roughness. The thin-film thickness effect is studied with copper oxide films grown by spray pyrolysis. The film is deposited with thickness in the 83 <= tau film <= 892 nm range on a nickel electrode and employed for glucose sensing in a three-electrode system as a working electrode. As the film thickness increases up to 434 nm, the signal stability and sensibility improve. For a greater thickness, the glucose sensibility starts to decrease smoothly. The sensibility increment from the thinnest film to our best condition is twofold from 0.25 to 0.47 mAmM-1/cm2, and a lineal behavior is observed for a wide glucose concentration range of 0-8 mM. This work shows that a simple solution-based technique such as spray pyrolysis can be employed to obtain functional glucose sensors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available