Doping induced enhancement for acetone sensing in ceria.

ABSTRACT: Ceria is a wide bandgap semiconductor oxide, however, by introducing oxygen vacancies (V_o), the electronic structure of ceria can be precisely tuned, resulting in a narrowed band gap and improved charge transport. Doping with lower-valent cations introduces V_o to maintain charge neutrality, thereby imparting robust chemiresistive and semiconducting properties. These vacancies act as active sites for analyte adsorption and are crucial for enhancing sensing performance. In this study, samaria-doped ceria was synthesized using a modified co-precipitation method. Structural analysis such as XRD, Raman spectroscopy, and HR-TEM confirm the formation of cubic fluorite-type structure in all samples. PL and UV-Vis spectroscopy show the enhanced defect levels with increase in S

SUBMITTER: Mistry R 

PROVIDER: S-EPMC12820260 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature