Photoconductive focal plane array based on HgTe quantum dots for fast and cost-effective short-wave infrared imaging.

Gréboval, Charlie; Darson, David; Parahyba, Victor; Alchaar, Rodolphe; Abadie, Claire; Noguier, Vincent; Ferré, Simon; Izquierdo, Eva; Khalili, Adrien; Prado, Yoann; Potet, Pierre; Lhuillier, Emmanuel

Gréboval, Charlie; Darson, David; Parahyba, Victor; Alchaar, Rodolphe; Abadie, Claire; Noguier, Vincent; Ferré, Simon; Izquierdo, Eva; Khalili, Adrien; Prado, Yoann; Potet, Pierre; Lhuillier, Emmanuel.

Afiliación

Gréboval C; Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France. el@insp.upmc.fr.
Darson D; Laboratoire de Physique de l'Ecole normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité, Paris, France.
Parahyba V; New Imaging Technologies SA, 1 impasse de la Noisette, 91370 Verrières le Buisson, France.
Alchaar R; Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France. el@insp.upmc.fr.
Abadie C; ONERA - The French Aerospace Lab, 6, chemin de la Vauve aux Granges, BP 80100, 91123 Palaiseau, France.
Noguier V; New Imaging Technologies SA, 1 impasse de la Noisette, 91370 Verrières le Buisson, France.
Ferré S; New Imaging Technologies SA, 1 impasse de la Noisette, 91370 Verrières le Buisson, France.
Izquierdo E; Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France. el@insp.upmc.fr.
Khalili A; Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France. el@insp.upmc.fr.
Prado Y; Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France. el@insp.upmc.fr.
Potet P; New Imaging Technologies SA, 1 impasse de la Noisette, 91370 Verrières le Buisson, France.
Lhuillier E; Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France. el@insp.upmc.fr.

Nanoscale ; 14(26): 9359-9368, 2022 Jul 07.

Article en En | MEDLINE | ID: mdl-35726871

RESUMEN

HgTe nanocrystals, thanks to quantum confinement, present a broadly tunable band gap all over the infrared spectral range. In addition, significant efforts have been dedicated to the design of infrared sensors with an absorbing layer made of nanocrystals. However, most efforts have been focused on single pixel sensors. Nanocrystals offer an appealing alternative to epitaxially grown semiconductors for infrared imaging by reducing the material growth cost and easing the coupling to the readout circuit. Here we propose a strategy to design an infrared focal plane array from a single fabrication step. The focal plane array (FPA) relies on a specifically designed readout circuit enabling in plane electric field application and operation in photoconductive mode. We demonstrate a VGA format focal plane array with a 15 µm pixel pitch presenting an external quantum efficiency of 4-5% (15% internal quantum efficiency) for a cut-off around 1.8 µm and operation using Peltier cooling only. The FPA is compatible with 200 fps imaging full frame and imaging up to 340 fps is demonstrated by driving a reduced area of the FPA. In the last part of the paper, we discuss the cost of such sensors and show that the latter is only driven by labor costs while we estimate the cost of the NC film to be in the 10-20 range.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Health_economic_evaluation Idioma: En Revista: Nanoscale Año: 2022 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Reino Unido

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