High-speed and high-precision PbSe/PbI2 solution process mid-infrared camera

Abstract Infrared (IR) cameras based on semiconductors grown by epitaxial methods face two main challenges, which are cost and operating at room temperature. The alternative new technologies which can tackle these two difficulties develop new and facile material and methods. Moreover, the implementa...

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Autores principales:	Hannaneh Dortaj, Mahboubeh Dolatyari, Armin Zarghami, Farid Alidoust, Ali Rostami, Samiye Matloub, Reza Yadipour
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1ddb72b0dc7542778e9867dec1464797
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spelling	oai:doaj.org-article:1ddb72b0dc7542778e9867dec14647972021-12-02T14:01:20ZHigh-speed and high-precision PbSe/PbI2 solution process mid-infrared camera10.1038/s41598-020-80847-42045-2322https://doaj.org/article/1ddb72b0dc7542778e9867dec14647972021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80847-4https://doaj.org/toc/2045-2322Abstract Infrared (IR) cameras based on semiconductors grown by epitaxial methods face two main challenges, which are cost and operating at room temperature. The alternative new technologies which can tackle these two difficulties develop new and facile material and methods. Moreover, the implementation of high speed camera, which makes high resolution images with normal methods, is very expensive. In this paper, a new nanostructure based on a cost-effective solution processed technology for the implementation of the high-speed mid-infrared light camera at room temperature is proposed. To this end, the chemically synthesized PbSe–PbI2 core–shell Quantum Dots (QDs) are used. In this work, a camera including 10 × 10 pixels is fabricated and synthesized QDs spin-coated on interdigitated contact (IDC) and then the fabricated system passivated by epoxy resin. Finally, using an electronic reading circuit, all pixels are converted to an image on the monitor. To model the fabricated camera, we solved Schrodinger–Poisson equations self consistently. Then output current from each pixel is modeled based on semiconductor physics and dark and photocurrent, as well as Responsivity and Detectivity, are calculated. Then the fabricated device is examined, and dark and photocurrents are measured and compared to the theoretical results. The obtained results indicate that the obtained theoretical and measured experimental results are in good agreement together. The fabricated detector is high speed with a rise time of 100 ns. With this speed, we can get 10 million frames per second; this means we can get very high-resolution images. The speed of operation is examined experimentally using a chopper that modulates input light with 50, 100, 250, and 500 Hz. It is shown that the fabricated device operates well in these situations, and it is not limited by the speed of detector. Finally, for the demonstration of the proposed device operation, some pictures and movies taken by the camera are attached and inserted in the paper.Hannaneh DortajMahboubeh DolatyariArmin ZarghamiFarid AlidoustAli RostamiSamiye MatloubReza YadipourNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hannaneh Dortaj Mahboubeh Dolatyari Armin Zarghami Farid Alidoust Ali Rostami Samiye Matloub Reza Yadipour High-speed and high-precision PbSe/PbI2 solution process mid-infrared camera
description	Abstract Infrared (IR) cameras based on semiconductors grown by epitaxial methods face two main challenges, which are cost and operating at room temperature. The alternative new technologies which can tackle these two difficulties develop new and facile material and methods. Moreover, the implementation of high speed camera, which makes high resolution images with normal methods, is very expensive. In this paper, a new nanostructure based on a cost-effective solution processed technology for the implementation of the high-speed mid-infrared light camera at room temperature is proposed. To this end, the chemically synthesized PbSe–PbI2 core–shell Quantum Dots (QDs) are used. In this work, a camera including 10 × 10 pixels is fabricated and synthesized QDs spin-coated on interdigitated contact (IDC) and then the fabricated system passivated by epoxy resin. Finally, using an electronic reading circuit, all pixels are converted to an image on the monitor. To model the fabricated camera, we solved Schrodinger–Poisson equations self consistently. Then output current from each pixel is modeled based on semiconductor physics and dark and photocurrent, as well as Responsivity and Detectivity, are calculated. Then the fabricated device is examined, and dark and photocurrents are measured and compared to the theoretical results. The obtained results indicate that the obtained theoretical and measured experimental results are in good agreement together. The fabricated detector is high speed with a rise time of 100 ns. With this speed, we can get 10 million frames per second; this means we can get very high-resolution images. The speed of operation is examined experimentally using a chopper that modulates input light with 50, 100, 250, and 500 Hz. It is shown that the fabricated device operates well in these situations, and it is not limited by the speed of detector. Finally, for the demonstration of the proposed device operation, some pictures and movies taken by the camera are attached and inserted in the paper.
format	article
author	Hannaneh Dortaj Mahboubeh Dolatyari Armin Zarghami Farid Alidoust Ali Rostami Samiye Matloub Reza Yadipour
author_facet	Hannaneh Dortaj Mahboubeh Dolatyari Armin Zarghami Farid Alidoust Ali Rostami Samiye Matloub Reza Yadipour
author_sort	Hannaneh Dortaj
title	High-speed and high-precision PbSe/PbI2 solution process mid-infrared camera
title_short	High-speed and high-precision PbSe/PbI2 solution process mid-infrared camera
title_full	High-speed and high-precision PbSe/PbI2 solution process mid-infrared camera
title_fullStr	High-speed and high-precision PbSe/PbI2 solution process mid-infrared camera
title_full_unstemmed	High-speed and high-precision PbSe/PbI2 solution process mid-infrared camera
title_sort	high-speed and high-precision pbse/pbi2 solution process mid-infrared camera
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1ddb72b0dc7542778e9867dec1464797
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_version_	1718392185604276224

High-speed and high-precision PbSe/PbI2 solution process mid-infrared camera

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