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Hybrid perovskite quantum dot-MWCNTs gas sensor for selective ethanol sensing

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Abstract

Quantum dots and carbon nanotubes are advanced nanomaterials that show excellent electrical, mechanical, and optical characteristics. This paper proposes perovskite quantum dots (PQDs) grown on the lattice of Multi-Wall Carbon Nanotubes (MWCNTs) as an efficient gas sensor. The developed sensor shows ethanol selectivity when tested with methanol, hexane, benzene, and ethyl acetate at room temperature. It exhibited fast response and recovery times of 15.17 and 2.64 s, respectively, at 10 ppm ethanol with 90% relative humidity. Essential sensor characteristics like sensitivity, stability, repeatability, and scalability are achieved in these sensors. These remarkable sensor characteristics make PQDs/MWCNTs highly attractive for real-world ethanol monitoring applications at ambient temperature.

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Acknowledgments

JT acknowledges UCF Seed funding 63019A07/63019A11 for financial support.

Funding

University of Central Florida, 63019A07/63019A11, Jayan Thomas.

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Author notes

  1. Priyanka Dwivedi and Jinxin Li contributed equally to this article.

Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Indian Institute of Information Technology (IIIT), Sri City, Chittoor, India

    Priyanka Dwivedi & P. Divyashree

  2. NanoScience Technology Center, University of Central Florida, Orlando, FL, 32816, USA

    Priyanka Dwivedi & Jayan Thomas

  3. CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USA

    Jinxin Li & Jayan Thomas

  4. Department of Materials Science and Engineering, University of Central Florida, Orlando, FL, 32816, USA

    Jinxin Li, Kaitlyn Crawford & Jayan Thomas

Authors
  1. Priyanka Dwivedi
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  2. Jinxin Li
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  4. Kaitlyn Crawford
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Correspondence to Jayan Thomas.

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Dwivedi, P., Li, J., Divyashree, P. et al. Hybrid perovskite quantum dot-MWCNTs gas sensor for selective ethanol sensing. MRS Communications 13, 1156–1162 (2023). https://doi.org/10.1557/s43579-023-00416-4

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