The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.
Long-Wavelength Lead Sulfide Quantum Dots Sensing up to 2600 nm for Short-Wavelength Infrared Photodetectors
Abstract
Lead sulfide nanoparticles (PbS NPs) are used in the short-wavelength infrared photodetectors because of their excellent photosensitivity, band gap tunability, and solution processability. It has been a challenge to synthesize high-quality PbS NPs with an absorption peak beyond 2000 nm. In this work, using PbS seed crystals with an absorption peak at 1960 nm, we report a successful synthesis of very large monodispersed PbS NPs having a diameter up to 16 nm by multiple injections. The resulting NPs have an absorption peak over 2500 nm with a small full width at half-maximum of 24 meV. To demonstrate the applications of such large quantum dots (QDs), broadband heterojunction photodetectors are fabricated with the large PbS QDs of an absorption peak at 2100 nm. The resulting devices have an external quantum efficiency (EQE) of 25% (over 50% internal quantum efficiency) at 2100 nm corresponding to a responsivity of 0.385 A/W and an EQE of ∼60% in the visible range.
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“This relatively low EQE probably reflects the limited absorption of the vertically incident light in the thin layer of 2.1 μ mPbS QDs and the relatively low transmittance of ITO at 2.1 μ m. 36”
From A silicon photonics waveguide-coupled colloidal quantum dot photodiode sensitive beyond 1.6 µ m (2024) · cites this paper as [36]
In the citing paper
“Previous reports on QDPDs at 2.1 μ mhave demonstrated an impressively low dark current density of 10 -5 A/cm 2 and high responsivity. 36”
From A silicon photonics waveguide-coupled colloidal quantum dot photodiode sensitive beyond 1.6 µ m (2024) · cites this paper as [36]
Citations
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Cited by
Sorted by citations
Items 101–118 of 118
One‐pot, easy and scalable synthesis of large‐size short wave length IR emitting PbS quantum dots
Sahu, U., & Prasad, B. L. V. (2024) · Photochemistry and Photobiology · doi:10.1111/php.13996 · Cited by 1
Effect of Optical Interference on External Quantum Efficiency of PbS Quantum Dot Photodiode
Kang, J., & Song, J. H. (2023) · Applied Science and Convergence Technology · doi:10.5757/asct.2023.32.6.162
Perspectives for the Development of SWIR-Band Photodetectors with Colloidal Quantum Dots
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Colloidal Synthesis of Coherent InP/ZnS Core/Shell Nanocrystals for Optoelectronic Applications
根本, 一. (2022) · Institutional Repositories DataBase (IRDB) · doi:10.14943/doctoral.k15236
Quantized Ostwald Ripening for the Synthesis of Large PbS Quantum DotsPreprint
Wen, S., Liu, W., Wang, S., Du, Y., Ma, T., Li, M., Li, M., Lier, 邓. D., & Liu, H. (2025) · SSRN Electronic Journal · doi:10.2139/ssrn.5545491
A Bilayer LiF/C 60 Interfacial Strategy for High Efficiency Inverted PbS QD Photodetectors
Zhong, A., Ling, K., Li, G., Chen, Q., Zheng, Y., Guo, T., Xia, Y., Chen, W., & Tang, H. (2026) · IEEE Electron Device Letters · doi:10.1109/led.2026.3658433
Microscale PN Junctions by In Situ Sb Doping for High-Performance PbS Infrared Photodetectors
Wang, Y., Li, S., Liu, R., Zhang, J., Liu, J., Luo, J., & Tang, J. (2026) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.5c24648
Stylianou, M., Bowes, E. G., Leoncino, L., Brescia, R., Nisoli, V., Malone, N., Geisenhoff, J. Q., Hollingsworth, J. A., Othonos, A., & Christodoulou, S. P. (2026) · Nano Letters · doi:10.1021/acs.nanolett.6c00158
High-switching-ratio RRAM with ultra-low power consumption based on PbS/PMMA composite layers
Gao, S., Jian, J., Chen, Z., Dong, P., Li, J., Liu, X. S., Wang, X., & Jian, Z. (2026) · Journal of Alloys and Compounds · doi:10.1016/j.jallcom.2026.188524
Photocurrent Saturation Mechanisms in Colloidal Quantum Dot Photodetectors
Molkens, K., Deng, Y., Kheradmand, E., Thourhout, D. V., Hens, Z., & Geiregat, P. (2026) · Nano Letters · doi:10.1021/acs.nanolett.6c01775
Short‐Wave Infrared Focal Plane Arrays Enabled by Reactivity‐Engineered PbSe Quantum Dots
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0D/2D PbS/1T‐CrS 2 Heterostructure for High‐Performance Ultraviolet to Near‐Infrared Detection
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Metadata
- Authors
- Dong, C., Liu, S., Barange, N., Lee, J., Pardue, T., Yi, X., Yin, S., & So, F.
- Affiliations
- North Carolina State University (US)
- Corresponding author
- So, Franky
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-11-05
- Volume
- 11
- Issue
- 47
- Pages
- 44451-44457
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2985550280
- Cited by
- 116
- References
- 32
- Citations by year
- 2026: 30 · 2025: 16 · 2024: 26 · 2023: 18 · 2022: 9 · 2021: 12 · 2020: 5
- FWCI
- 2.35
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- ACS Applied Materials & Interfaces (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Quantum Dots Synthesis And Properties
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Semiconductor Detectors and Materials
- Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
- Keywords
- PbS quantum dots, PbS nanocrystals, short-wavelength infrared photodetectors, seed crystal growth, monodisperse nanoparticles, external quantum efficiency, visible light detection, band gap tuning
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