Optoelectronic properties in CuO nanofibers, pure and doped with Mn

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-03-20 DOI:10.1016/j.rinp.2025.108208

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

引用次数: 0

Abstract

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.

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掺杂锰的纯CuO纳米纤维的光电性能

本研究基于Kramers-Kronig分析得到的纯(A)和掺2.5% mn (B)的CuO纳米纤维（NFs）的介电函数进行了光电研究。利用XRD和STEM对纳米颗粒进行了表征，重点分析了价电子能损失（VEELS）。该分析通过Cole-Cole图进行补充，以确定带隙（Eg）并将其与EELS结果进行比较。这些性质表明，由于带隙为2.03 eV （a - nfs）和2.85 eV (B-NFs)，以及介电函数的负电导率和导带的空穴，材料具有半金属性质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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