| Title: |
Photoconductive focal plane array based on HgTe quantum dots for fast and costeffective short-wave infrared imaging |
| Authors: |
Gréboval, Charlie; Darson, David; Parahyba, Victor; Alchaar, Rodolphe; Abadie, Claire; Noguier, Vincent; Ferré, Simon; Izquierdo, Eva; Khalili, Adrien; Prado, Yoann; Potet, Pierre; Lhuillier, Emmanuel |
| Contributors: |
Physico-chimie et dynamique des surfaces (INSP-E6); Institut des Nanosciences de Paris (INSP); Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Laboratoire de physique de l'ENS - ENS Paris (LPENS); Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Département de Physique de l'ENS-PSL; École normale supérieure - Paris (ENS-PSL); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL); Nanostructures et optique (INSP-E4); ANR-21-CE09-0029,MixDFerro,Heterostructures à dimensions mixtes sous contrôle ferroélectrique 2D(2021); ANR-19-CE09-0017,FRONTAL,Nanocristaux Colloïdaux Dopés Infrarouges(2019); ANR-20-ASTR-0008,NITquantum,Design et fabrication d'un plan focal dans le proche infrarouge à base de nanocrisrtaux(2020); ANR-19-CE24-0022,COPIN,Détecteur plasmonique à nanoCristaux colloïdaux: une nouvelle filière pour l'OPtoélectronique INfrarouge(2019); ANR-21-CE24-0012,BRIGHT,Diode électroluminescente infrarouge brillante par exaltation du couplage lumière-matière(2021); ANR-19-CE09-0026,GRaSkop,Tuning Giant Rashba Spin-Orbit Coupling in Polar Single Layer Transition Metal Dichalcogenides(2019); ANR-18-CE30-0023,IPER-Nano2,Nanocristaux de perovskite inorganique pour la nanophotonique(2018); European Project: 756225,ERC-2017-STG,ERC-2017-STG,blackQD(2018) |
| Source: |
ISSN: 2040-3364. |
| Publisher Information: |
CCSD; Royal Society of Chemistry |
| Publication Year: |
2022 |
| Subject Terms: |
imaging; quantum dots; HgTe; detection; short wave infrared; [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]; [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics |
| Description: |
International audience ; 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 cutoff 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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/grantAgreement//756225/EU/Optoelectronic of narrow band gap nanocrystals/blackQD |
| DOI: |
10.1039/D2NR01313D |
| Availability: |
https://hal.science/hal-03694583; https://hal.science/hal-03694583v1/document; https://hal.science/hal-03694583v1/file/imagingPC_v26.pdf; https://doi.org/10.1039/D2NR01313D |
| Rights: |
https://about.hal.science/hal-authorisation-v1/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.4D6A7DEE |
| Database: |
BASE |