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Efficient Gamma Ray Detection Using CdTe/CdS Core/Shell Quantum Dots: A Simple and Rapid Fluorescence Approach

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Abstract

Gamma rays, as hazardous nuclear radiation, necessitate effective and rapid detection methods. This paper introduces a low-cost, fast, and simple fluorescence method based on CdTe/CdS core/shell quantum dots for gamma-ray detection. CdTe/CdS quantum dots, subjected to gamma irradiation from a 60Co source under various conditions, were investigated to assess their fluorescence sensor capabilities. The obtained results showed that an increase in CdTe/CdS nanoparticle size was associated with decreased sensitivity, while a reduction in CdTe/CdS concentration correlated with increased sensitivity. To further validate the practicality of CdTe/CdS core/shell quantum dots in gamma-ray detection, the structural properties of the quantum dots were meticulously studied. Raman spectroscopy, X-ray diffraction (XRD), and Fourier-transform infrared (FT-IR) analysis were conducted before and after gamma-ray radiation. The results demonstrated the crystalline stability of CdTe/CdS core/shell quantum dots under gamma irradiation, highlighting their robust structural integrity. In conclusion, the experimental findings underscore the exceptional potential of CdTe/CdS quantum dots as an off-fluorescence probe for simple, low-cost, fast, and on-site detection of gamma rays. This research contributes to the advancement of efficient and practical methods for gamma-ray sensing in various applications.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Vali-e-Asr University of Rafsanjan, 22 Bahman Square, Rafsanjan, Iran

    Farzad Farahmandzadeh, Soamyeh naseri portakaloo, Mehdi Molaei & Mohammad Khanzadeh

  2. Department of Physics, Faculty of Science, Yazd University, Yazd, Iran

    Elham Molahosseini

Authors
  1. Farzad Farahmandzadeh
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  2. Elham Molahosseini
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  3. Soamyeh naseri portakaloo
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  4. Mehdi Molaei
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  5. Mohammad Khanzadeh
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Contributions

All authors contributed to the study’s conception and design. Material preparation, data collection, and analysis were performed by Farzad Farahmandzadeh, Elham Molahosseini, Somayeh Naseri Portakaloo, Mehdi Molaei, and Mohammad Khanzadeh. The first draft of the manuscript was written by Farzad Farahmandzadeh. All authors read and approved the final manuscript.

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Correspondence to Mehdi Molaei.

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This work was done in the nanoscience lab of the Vali-e-Asr University of Rafsanjan, Iran, this article is original, this article has been written by the stated authors who are ALL aware of its content and approve its submission. This article has not been published previously.

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Farahmandzadeh, F., Molahosseini, E., portakaloo, S.n. et al. Efficient Gamma Ray Detection Using CdTe/CdS Core/Shell Quantum Dots: A Simple and Rapid Fluorescence Approach. J Fluoresc (2024). https://doi.org/10.1007/s10895-024-03630-y

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