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Article

Capacitive Photodetector Thin-Film Cells of Cu-As2S3-Cu as Revealed by Dielectric Spectroscopy

1
National Institute of Materials Physics, 405A Atomistilor St., RO-077125 Magurele, Romania
2
National Institute for Laser, Plasma and Radiation Physics, 409Atomistilor St., RO-077125 Magurele, Romania
3
Department of Product Design, Mechatronics and Environment, Transilvania University of Braşov, 29 Eroilor Blvd., RO-500036 Brașov, Romania
*
Author to whom correspondence should be addressed.
Academic Editor: Paolo Bertoncello
Sensors 2022, 22(3), 1143; https://doi.org/10.3390/s22031143
Received: 10 December 2021 / Revised: 28 January 2022 / Accepted: 29 January 2022 / Published: 2 February 2022
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Romania 2021)
The As2S3-Cu interface was studied by dielectric spectroscopy measurements on Cu-As2S3-Cu thin film heterostructure samples to assess the charge carriers’ contribution to the electrical properties of such an interface. Three-dimensional printed masks ensured good reproducibility during the PLD deposition of heterostructure samples. The samples were tested for electrical conductivity and AC photoconductivity by dielectric spectroscopy measurements. DC bias voltages and light were applied to the samples. The electrical capacity of the thin film heterostructure can be modified electrically and optically. We observed long-term photoconductivity with a time dependency that was not exponential, and a quick change of the electrical capacity, indicating the potential of the heterostructure cells as photodetector candidates. View Full-Text
Keywords: a-As2S3; copper ions; dielectric spectroscopy; electrical conductivity; photodetector cell a-As2S3; copper ions; dielectric spectroscopy; electrical conductivity; photodetector cell
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MDPI and ACS Style

Ganea, P.; Socol, G.; Zamfira, S.; Creţu, N.; Matei, E.; Lőrinczi, A. Capacitive Photodetector Thin-Film Cells of Cu-As2S3-Cu as Revealed by Dielectric Spectroscopy. Sensors 2022, 22, 1143. https://doi.org/10.3390/s22031143

AMA Style

Ganea P, Socol G, Zamfira S, Creţu N, Matei E, Lőrinczi A. Capacitive Photodetector Thin-Film Cells of Cu-As2S3-Cu as Revealed by Dielectric Spectroscopy. Sensors. 2022; 22(3):1143. https://doi.org/10.3390/s22031143

Chicago/Turabian Style

Ganea, Paul, Gabriel Socol, Sorin Zamfira, Nicolae Creţu, Elena Matei, and Adam Lőrinczi. 2022. "Capacitive Photodetector Thin-Film Cells of Cu-As2S3-Cu as Revealed by Dielectric Spectroscopy" Sensors 22, no. 3: 1143. https://doi.org/10.3390/s22031143

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