Indian researchers have developed novel lead-free and eco-friendly photo detector in February 2026.
The device was developed by the International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad, in collaboration with IIT Hyderabad under the Department of Science and Technology.
It is based on a double perovskite material called Cs2AgBiBr6 and uses low-cost carbon electrodes.
The photodetector is lead free, self-powered, and shows a strong response to visible light.
It retains more than 90 % performance even after 60 days and is made using a one-step coating method at room temperature.
It can be used in consumer electronics, security systems, industrial monitoring and biomedical imaging.