Ionic-electronic photodetector performs in-sensor image processing, offering the potential to surpass color vision deficiencies of human vision

https://phys.org/news/2025-08-ionic-electronic-photodetector-sensor-vision.html

"van der Waals ferroelectric layered copper indium phosphorus sulfide photodetector supports ionic/ electronic conduction... mobile Cu+ ion motion elicits nonlinear/ history-dependent photoresponses, light sensitivity dynamic tuning... reconfigurability allows selectively enhancing weak signals/ suppressing overexposed regions... reweight spectral contrast/ modulate responsivity enhancing color contrast between red/ green...noise removal, contrast enhancement, image inversion filtering, low-power edge AI"