Nanoscale, volume 14, issue 26, pages 9359-9368

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

Charlie Gréboval 1
David Darson 2
Victor Parahyba 3
Rodolphe Alchaar 1
Claire Abadie 4, 5
Vincent Noguier 3
Simon Ferré 3
Eva Izquierdo 1
Adrien Khalili 1
Yoann Prado 1
Pierre Potet 3
3
 
New Imaging Technologies SA, 1 impasse de la Noisette, 91370 Verrières le Buisson, France
4
 
ONERA – The French Aerospace Lab, 6, chemin de la Vauve aux Granges, BP 80100, 91123 Palaiseau, France
5
 
ONERA – The French Aerospace Lab, 6, chemin de la Vauve aux Granges, 91123 Palaiseau, France
Publication typeJournal Article
Publication date2022-06-13
Journal: Nanoscale
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor6.7
ISSN20403364, 20403372
General Materials Science
Abstract
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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Gréboval C. et al. Photoconductive focal plane array based on HgTe quantum dots for fast and cost-effective short-wave infrared imaging // Nanoscale. 2022. Vol. 14. No. 26. pp. 9359-9368.
GOST all authors (up to 50) Copy
Gréboval C., Darson D., Parahyba V., Alchaar R., Abadie C., Noguier V., Ferré S., Izquierdo E., Khalili A., Prado Y., Potet P., Lhuillier E. Photoconductive focal plane array based on HgTe quantum dots for fast and cost-effective short-wave infrared imaging // Nanoscale. 2022. Vol. 14. No. 26. pp. 9359-9368.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1039/d2nr01313d
UR - https://doi.org/10.1039/d2nr01313d
TI - Photoconductive focal plane array based on HgTe quantum dots for fast and cost-effective short-wave infrared imaging
T2 - Nanoscale
AU - Gréboval, Charlie
AU - Darson, David
AU - Parahyba, Victor
AU - Alchaar, Rodolphe
AU - Abadie, Claire
AU - Noguier, Vincent
AU - Ferré, Simon
AU - Izquierdo, Eva
AU - Khalili, Adrien
AU - Prado, Yoann
AU - Potet, Pierre
AU - Lhuillier, Emmanuel
PY - 2022
DA - 2022/06/13 00:00:00
PB - Royal Society of Chemistry (RSC)
SP - 9359-9368
IS - 26
VL - 14
SN - 2040-3364
SN - 2040-3372
ER -
BibTex |
Cite this
BibTex Copy
@article{2022_Gréboval,
author = {Charlie Gréboval and David Darson and Victor Parahyba and Rodolphe Alchaar and Claire Abadie and Vincent Noguier and Simon Ferré and Eva Izquierdo and Adrien Khalili and Yoann Prado and Pierre Potet and Emmanuel Lhuillier},
title = {Photoconductive focal plane array based on HgTe quantum dots for fast and cost-effective short-wave infrared imaging},
journal = {Nanoscale},
year = {2022},
volume = {14},
publisher = {Royal Society of Chemistry (RSC)},
month = {jun},
url = {https://doi.org/10.1039/d2nr01313d},
number = {26},
pages = {9359--9368},
doi = {10.1039/d2nr01313d}
}
MLA
Cite this
MLA Copy
Gréboval, Charlie, et al. “Photoconductive focal plane array based on HgTe quantum dots for fast and cost-effective short-wave infrared imaging.” Nanoscale, vol. 14, no. 26, Jun. 2022, pp. 9359-9368. https://doi.org/10.1039/d2nr01313d.
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