Sogang University Student Develops Eco-Friendly Quantum Dot Infrared Detector at NYU Tandon

Sogang University Ph.D. student Seyoung Park and colleagues developed a quad-band short-wave infrared photodetector using quantum dots, related to the paper with Shlok J. Paul as lead author. The team used direct photolithography to pattern four different quantum dot types with distinct absorption spectra, creating channels that can decode and identify infrared signals. This breakthrough overcomes limitations of conventional broadband infrared detectors, enabling wavelength-selective detection useful for medical diagnostics, autonomous driving, agriculture, and environmental monitoring. Park conducted the research during a year-long placement in Associate Professor Ayaskanta Sahu's lab.