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Tailoring structural, surface, optical, and dielectric properties of CuO nanosheets for applications in high-frequency devices

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Abstract

In the present study, a simple chemical method for the preparation of CuO nanostructures by varying Mn-doping concentration has been reported. It also provides an extensive investigation of structural, surface, and optical and dielectric properties of Mn-doped CuO nanostructures. Single-phase monoclinic crystal structure of CuO formation for all samples with average crystallite size of 20–24 nm has been observed from X-ray diffraction (XRD) results. A morphological transformation from nanosheets to spherical nanoparticles have been found with Mn doping as depicted by scanning electron microscopy (SEM) images. The successful doping of Mn ions into CuO crystal has also been supported by Fourier transform infrared spectroscopy (FTIR) results. The widening of the optical bandgap of CuO nanostructures has been observed with increasing Mn doping which may be attributed to band-filling effects and exchange interactions. Interestingly, the values of dielectric constant of CuO nanostructures have been observed to increase systematically with Mn doping making it potential material for high-frequency device applications.

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Authors and Affiliations

  1. Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications, School of Materials, Beijing Institute of Technology, Beijing, People’s Republic of China

    Muhammad Sajid

  2. Laboratory of Nanoscience and Technology (LNT), International Islamic University Islamabad, Islamabad, Pakistan

    Muhammad Sajid

  3. Department of Physics, Govt. College University Faisalabad, Faisalabad, Pakistan

    Muhammad Imran

  4. State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China

    Salahuddin

  5. Department of Physics, Quaid Azam University Islamabad, Islamabad, Pakistan

    Javed Iqbal

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  1. Muhammad Sajid
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  3. Salahuddin
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Correspondence to Muhammad Imran.

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Sajid, M., Imran, M., Salahuddin et al. Tailoring structural, surface, optical, and dielectric properties of CuO nanosheets for applications in high-frequency devices. Appl. Phys. A 124, 768 (2018). https://doi.org/10.1007/s00339-018-2179-z

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