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Optoelectronic properties in CuO nanofibers, pure and doped with Mn

Year: 2025

Type: article

Abstract: • An practical method to determine the bandgap of the nanofibers. • Very clear way to obtain the optical and electronic properties. • Novel way to obtain CuO:Mn materials, nanofibers. This research presents an optoelectronic study based on the dielectric function obtained from Kramers-Kronig analysis of CuO nanofibers (NFs), both pure (A) and 2.5 % Mn-doped (B), synthesized via the electrospinning method. The NFs were characterized using XRD and STEM, with a specific focus on analyzing valence electron energy loss (VEELS). This analysis was complemented by Cole-Cole diagrams to determine the band gap (E g ) and compare it with the EELS results. These properties reveal that the materials exhibit a semi-metallic nature due to the band gaps of 2.03 eV (A-NFs) and 2.85 eV (B-NFs), as well as negative conductivity in the dielectric function, and holes in the conduction band.

Source: Results in Physics

DOI: 10.1016/j.rinp.2025.108208

Authors: M. Piñón Espitia, J.A. Duarte-Moller, J.A. López-Gallardo, M.T. Ochoa-Lara

Institutions: The University of Texas at El Paso, Universidad de Sonora, Centro de Investigación en Materiales Avanzados

Language: English

Topic: Copper-based nanomaterials and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,920

OpenAlex ID: W4408704100

FWCI:

Cites: 36

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Related to: 10