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September 10, 2025Nano Letters

Uncooled and Broadband PbSe Colloidal-Quantum-Dot Short-Wave Infrared Photodetectors

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Research demonstrates PbSe CQD photodetectors improve carrier mobility and electronic properties, highlighting innovative potential.

Short-wave infrared photodetectors achieved a record specific detectivity of 3.1 × 10^12 Jones at 1640 nm, showcasing outstanding performance.
The novel monomer-assisted ligand exchange method led to enhanced electronic properties, improving carrier mobility and lifetime.
The uncooled PbSe CQD photodetectors showed photoresponses of up to 2.5 μm, outperforming traditional InGaAs photodetectors.
Room-temperature detectivity reached 3.0 × 10^11 Jones at approximately 2360 nm, further indicating their practical applicability.

Xia et al. (2025) studied this question.

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September 10, 2025Nano Letters

View Full Paper

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Authors

Research demonstrates PbSe CQD photodetectors improve carrier mobility and electronic properties, highlighting innovative potential.

Short-wave infrared photodetectors achieved a record specific detectivity of 3.1 × 10^12 Jones at 1640 nm, showcasing outstanding performance.
The novel monomer-assisted ligand exchange method led to enhanced electronic properties, improving carrier mobility and lifetime.
The uncooled PbSe CQD photodetectors showed photoresponses of up to 2.5 μm, outperforming traditional InGaAs photodetectors.
Room-temperature detectivity reached 3.0 × 10^11 Jones at approximately 2360 nm, further indicating their practical applicability.

Xia et al. (2025) studied this question.

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