A new study published in Nature Communications reports a major advancement in short‑wave infrared (SWIR) photodetector technology, achieved by researchers at ICFO – The Institute of Photonic Sciences. The article, “Synthesis of monodisperse InSb colloidal quantum dots by monomer concentration control for short‑wave infrared photodetectors”, introduces a synthesis method that produces highly uniform indium antimonide (InSb) colloidal quantum dots with strong excitonic absorption and improved optical performance.

The ICFO team demonstrated that controlling monomer concentration during synthesis overcomes long‑standing issues such as broad size distribution in quantum dots, enabling devices that operate more efficiently in the SWIR spectrum. This spectral range is key for imaging under low‑light, fog, and adverse weather conditions, making the results particularly relevant for next‑generation vision systems.

These advances align closely with the goals of the 2DNeuralVision project, which is developing wide‑spectrum, low‑power imaging technologies based on 2D materials and optical neural networks. High‑performance SWIR detectors such as those demonstrated by the ICFO team could support improved light capture and expanded spectral capability in future device architectures.

The work also highlights compatibility with CMOS processing and environmentally compliant materials, reinforcing ongoing European efforts to develop scalable, sustainable photonic components for advanced imaging.