ArticleACS nano2024
Uncooled High Detectivity Mid-Infrared Photoconductor Using HgTe Quantum Dots and Nanoantennas.
Article in ACS nano, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Surface Passivation of HgTe Nanocrystals Enabling EAdvanced materials (Deerfield Beach, Fla.) · 2026Article
- Nonlinear light conversion and infrared photodetection with laser-printed plasmonic metasurfaces supporting bound states in the continuum.Light, science & applications · 2026Article
- Interfacial engineering with chemical bath deposition for high-performance HgTe quantum dot-based short-wave infrared photodetectors.Nano convergence · 2025Article
- Enabling highly efficient infrared silicon photodetectors via disordered metasurfaces with upconversion nanoparticles.Science advances · 2025Article
- Colloidal Quantum Dots for Nanophotonic Devices.Materials (Basel, Switzerland) · 2024Article
Corrections and comments
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Authors and funding
2 authors.
Funding
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Abstract
Using a metal/insulator/metal (MIM) structure with a gold nanoantenna array made by electron beam lithography, the responsivity of a HgTe colloidal quantum dot film is enhanced in the mid-infrared. Simulations indicate that the spatially averaged peak spectral absorption of an 80 nm film is 60%, enhanced 23-fold compared to that of the same film on a bare sapphire substrate. The field intensity enhancement is focused near the antenna tips, being 20-fold 100 nm away, which represents only 1% of the total area and up to 1000-fold at the tips. The simulated polarized absorption spectra are in good agreement with the experiments, with a strong resonance around 4 μm. A responsivity of 0.6 A/W is obtained at a 1 V bias. Noise measurements separate the 1/f noise from the generation-recombination white noise and give a spatially averaged photoconductive gain of 0.3 at 1 V bias. The spatially averaged peak detectivity is improved 15-fold compared to the same film on a sapphire substrate without an MIM structure. The experimental peak detectivity reaches 9 × 10
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