Idisi, DOAigbe, UOChilukusha, DMwakikunga, Bonex WAsante, JKO2025-01-102025-01-102024-110925-96351879-0062https://doi.org/10.1016/j.diamond.2024.111584http://hdl.handle.net/10204/13928The photoresponse properties of green synthesized Fe3O4 (gFe3O4) supported-activated carbon (AC/g-Fe3O4) were studied using a photocurrent characterization approach. Preliminary UV–Vis analysis suggested a reduction in the band gap energy when activated carbon is incorporated into gFe3O4 nanoparticles (2.61 → 1.57 eV). The current-voltage characteristics indicate semiconductor features for both gFe3O4 and AC/gFe3O4 nanoparticles. The photodetector measurements indicate a significantly enhanced response for AC/gFe3O4 and can be attributed to increased rectification and photogenerated carriers emanating from the activated carbon incorporation. The study proposes AC/gFe3O4 nanocomposite as a novel material that can be used for the fabrication of photodetectors and other related optoelectronic devices.FulltextenIron oxideActivated carbonGreen synthesisPhotoconductivityPhotosensitivityArticlen/a