Extended Short-Wave Photodiode based on CdSe/HgTe/Ag2Te Stack with High Internal Efficiency
| Autor: | Prachi Rastogi, Eva Izquierdo, Charlie Gréboval, Mariarosa Cavallo, Audrey Chu, Tung Huu Dang, Adrien Khalili, Claire Abadie, Rodolphe Alchaar, Stefano Pierini, Herve Cruguel, Nadine Witkowski, James K. Utterback, Thibault Brule, Xiang Zhen Xu, Philippe Hollander, Abdelkarim Ouerghi, Bruno Gallas, Mathieu G. Silly, Emmanuel Lhuillier |
|---|---|
| Přispěvatelé: | 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), HORIBA Scientific [France], Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) (LPEM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Nanostructures et optique (INSP-E4), ANR-19-CE24-0022,COPIN,Détecteur plasmonique à nanoCristaux colloïdaux: une nouvelle filière pour l'OPtoélectronique INfrarouge(2019), ANR-19-CE09-0017,FRONTAL,Nanocristaux Colloïdaux Dopés Infrarouges(2019), ANR-21-CE09-0029,MixDFerro,Heterostructures à dimensions mixtes sous contrôle ferroélectrique 2D(2021), ANR-21-CE24-0012,BRIGHT,Diode électroluminescente infrarouge brillante par exaltation du couplage lumière-matière(2021), ANR-20-ASTR-0008,NITquantum,Design et fabrication d'un plan focal dans le proche infrarouge à base de nanocrisrtaux(2020), ANR-19-CE09-0026,GRaSkop,Tuning Giant Rashba Spin-Orbit Coupling in Polar Single Layer Transition Metal Dichalcogenides(2019), European Project: 756225,blackQD |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
General Energy
nanocrystals time resolved photoemission detection [CHIM.MATE]Chemical Sciences/Material chemistry Physical and Theoretical Chemistry [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] HgTe Surfaces Coatings and Films Electronic Optical and Magnetic Materials short wave infrared |
| Zdroj: | Journal of Physical Chemistry C Journal of Physical Chemistry C, 2022, 126 (32), pp.13720-13728. ⟨10.1021/acs.jpcc.2c02044⟩ |
| ISSN: | 1932-7447 1932-7455 |
| Popis: | International audience; Nanocrystal integration into focal plane arrays requires the development of new photodiode designs combining an efficient charge dissociation with a low dark current. Previously reported architectures based on HgTe/Ag2Te stacks appear to be sub-optimal for cutoff wavelengths below 2.5 µm. Here, we show that the introduction of a thin and strongly coupled CdSe layer acting as an electron transport layer and a unipolar barrier drastically improves the electrical performances. This diode achieves a responsivity as high as 0.8 A•W-1 , corresponding to an internal efficiency above 90 % for a 2 µm cutoff wavelength. The specific detectivity is close to 10 11 Jones at room temperature and reaches 9x10 11 Jones at 200 K, the highest value reported for HgTe nanocrystal-based photodiode with operation around 2 µm. The diode time response can be as short as 200 ns and appears to be limited by band bending dynamics as revealed by time-resolved photoemission measurements. |
| Databáze: | OpenAIRE |
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