ACS Photonics, volume 5, issue 11, pages 4569-4576

Design of a Unipolar Barrier for a Nanocrystal-Based Short-Wave Infrared Photodiode

Amardeep Jagtap 1
Bertille Martinez 1, 2
Nicolas Goubet 1, 2
Audrey Chu 1
Clément Livache 1, 2
Julien Ramade 1, 2
Dylan Amelot 1
Paul Trousset 1
Amaury Triboulin 1
S. Ithurria 2
M. Silly 3
Publication typeJournal Article
Publication date2018-10-29
Journal: ACS Photonics
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor7
ISSN23304022, 23304022
Electronic, Optical and Magnetic Materials
Biotechnology
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering
Abstract
Nanocrystals are promising materials for the design of low-cost, infrared (IR) detectors. Here we focus on HgTe colloidal quantum dots (CQDs) as an active material for detection in the extended short-wave infrared (2.5 μm as cutoff wavelength). In this paper, we propose a strategy to enhance the performances of previously reported photodiodes. In particular, we integrate in this diode a unipolar barrier, whose role is to reduce the dark current injection and subsequently enhance the signal-to-noise ratio. We demonstrate that such unipolar barrier can be designed from another layer of HgTe CQDs with a wider band gap. Using a combination of IR spectroscopy and photoemission, we show that the barrier is resonant with the absorbing layer valence band, while presenting a clear offset with the conduction band. The combination of contacts with improved design and use of a unipolar barrier allows us to reach a detectivity as high as 3 × 108 Jones at room temperature with 3 dB cut off frequency above 10 kHz.

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Jagtap A. et al. Design of a Unipolar Barrier for a Nanocrystal-Based Short-Wave Infrared Photodiode // ACS Photonics. 2018. Vol. 5. No. 11. pp. 4569-4576.
GOST all authors (up to 50) Copy
Jagtap A., Martinez B., Goubet N., Chu A., Livache C., Gréboval C., Ramade J., Amelot D., Trousset P., Triboulin A., Ithurria S., Silly M., Dubertret B., Lhuillier E. Design of a Unipolar Barrier for a Nanocrystal-Based Short-Wave Infrared Photodiode // ACS Photonics. 2018. Vol. 5. No. 11. pp. 4569-4576.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1021/acsphotonics.8b01032
UR - https://doi.org/10.1021/acsphotonics.8b01032
TI - Design of a Unipolar Barrier for a Nanocrystal-Based Short-Wave Infrared Photodiode
T2 - ACS Photonics
AU - Trousset, Paul
AU - Triboulin, Amaury
AU - Jagtap, Amardeep
AU - Martinez, Bertille
AU - Goubet, Nicolas
AU - Chu, Audrey
AU - Livache, Clément
AU - Gréboval, Charlie
AU - Amelot, Dylan
AU - Ithurria, S.
AU - Lhuillier, Emmanuel
AU - Ramade, Julien
AU - Silly, M.
AU - Dubertret, Benoît
PY - 2018
DA - 2018/10/29 00:00:00
PB - American Chemical Society (ACS)
SP - 4569-4576
IS - 11
VL - 5
SN - 2330-4022
SN - 2330-4022
ER -
BibTex |
Cite this
BibTex Copy
@article{2018_Jagtap,
author = {Paul Trousset and Amaury Triboulin and Amardeep Jagtap and Bertille Martinez and Nicolas Goubet and Audrey Chu and Clément Livache and Charlie Gréboval and Dylan Amelot and S. Ithurria and Emmanuel Lhuillier and Julien Ramade and M. Silly and Benoît Dubertret},
title = {Design of a Unipolar Barrier for a Nanocrystal-Based Short-Wave Infrared Photodiode},
journal = {ACS Photonics},
year = {2018},
volume = {5},
publisher = {American Chemical Society (ACS)},
month = {oct},
url = {https://doi.org/10.1021/acsphotonics.8b01032},
number = {11},
pages = {4569--4576},
doi = {10.1021/acsphotonics.8b01032}
}
MLA
Cite this
MLA Copy
Jagtap, Amardeep, et al. “Design of a Unipolar Barrier for a Nanocrystal-Based Short-Wave Infrared Photodiode.” ACS Photonics, vol. 5, no. 11, Oct. 2018, pp. 4569-4576. https://doi.org/10.1021/acsphotonics.8b01032.
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