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Flame Detectors Based on Semiconductor Nanocrystals

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Abstract

The possibility of using semiconductor nanocrystals in photodetectors for optical detection of open flame has been explored. The spectral range boundaries of response of flame detectors have been concretized. In accordance with this, colloidal lead sulfide nanocrystals absorbing in the range of 1–1.5 µm have been synthesized. Photoresistors with different ligand compositions have been made from these particles. For the obtained samples, the current–voltage characteristics were measured and the photosensitivity and specific detectivity parameters were calculated. A theoretical estimate of the flame detection range has been made for the samples. It has been shown that a photosignal can be reliably detected at a distance of more than 80 m.

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Funding

The work was supported by the Innovation Promotion Fund, contract 49GURES14/72776 of Dec 27, 2021.

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Authors and Affiliations

  1. Federal Research Center for Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    D. N. Pevtsov & A. V. Gadomska

  2. Moscow Institute of Physics and Technology (National Research University), 141701, Dolgoprudnyi, Moscow oblast, Russia

    D. N. Pevtsov, D. V. Demkin & A. V. Katsaba

  3. Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    A. V. Katsaba

Authors
  1. D. N. Pevtsov
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  2. D. V. Demkin
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  3. A. V. Katsaba
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  4. A. V. Gadomska
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Corresponding author

Correspondence to D. N. Pevtsov.

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The authors declare no conflict of interest.

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Translated by S. Zatonsky

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Pevtsov, D.N., Demkin, D.V., Katsaba, A.V. et al. Flame Detectors Based on Semiconductor Nanocrystals. High Energy Chem 57, 327–334 (2023). https://doi.org/10.1134/S0018143923040100

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  • DOI: https://doi.org/10.1134/S0018143923040100

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