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Studying the structural, electrical, and optical properties of carbon quantum dot prepared by the electro-chemical method

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Abstract

Carbon quantum dots (CQDs) were prepared by electro-chemical reaction method under reaction conditions such as time and current. The current is 30 mA and time is 3 h. The samples were analyzed using X-ray diffraction, transmission electron microspectroscopy, Fourier transform infrared spectroscopy, photoluminescence spectroscopy, UV–visible spectroscopy, and Hall effect. The results showed that the crystal size calculated by Debye–Scherrer’s formula was 70 nm and a greater peak of 1577 cm−1 obtained from FTIR corresponded to C꞊C, which refers to CQDs. The generated energy surface state was measured, which is 3.17, 2.54, 2.33, and 2.01 eV, and the change in the size of surface state was measured, which is 3.372, 3.089, 2.891, and 2.685 nm, respectively, and the free carrier concentration was 5.008 × 108 cm−2, where it was the nanostructure. It was found by measuring the Hall effect that the CQDs were p-type.

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Authors and Affiliations

  1. Physics Department, College of Science, The University of Baghdad, Baghdad, Iraq

    Nooriyah Ahmed Abd & Omar Adnan Ibrahim

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  1. Nooriyah Ahmed Abd
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  2. Omar Adnan Ibrahim
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Contributions

Each co-author has made unique contributions to the work. NAA prepared the CQDS and thin films, contributed to writing the article draft, wrote the program for optical properties, and contributed to the analysis of the results. OAI supervised the work and reviewed the article draft.

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Correspondence to Omar Adnan Ibrahim.

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Abd, N.A., Ibrahim, O.A. Studying the structural, electrical, and optical properties of carbon quantum dot prepared by the electro-chemical method. J Opt (2023). https://doi.org/10.1007/s12596-023-01462-w

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