Surface treatment of ZnO:Sb microwires to improve their persistent photo-conductance response.

ABSTRACT: Chemical and biological sensors based on ZnO microwires usually rely on the change in the wire conductance with the ambient gas composition. Yet, sensitivity and recovery time of the conductance are important limitations in these applications. We treated ZnO:Sb micro-wires with single droplets of solvents for very short times and found a significant enhancement of the persistent photo-conductance and a reduction of the recovery time of the resistance by more than an order of magnitude when treated with isopropanol droplets. Placing a solvent droplet on a ZnO:Sb micro-wire in situ during measurement allowed us to make a direct comparison between the behavior before, during, and after solvent treatment. Isopropyl alcohol (IPA) has the most significant response among the solvents that

SUBMITTER: AbualRob K 

PROVIDER: S-EPMC11770412 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature