Self-powered flexible Sb2Se3/SnS2 broadband photodetector

Research and development of high-performance flexible broad range photoelectric detectors to meet the needs of the next generation of wearable smart devices will become increasingly important with the rapid development of the information age, based on the Internet of Things, intelligent wearable devices, intelligent households, and wisdom city high and new technology industry. Based on these requirements, a Sb2Se3/SnS2 heterojunction flexible self-driven photodetector was designed and fabricated. In terms of response bandwidth, responsivity, detectivity, and response speed, our device demonstrated exceptional performance. Moreover, our flexible device has good performance even after bending. This study confirms that Sb2Se3/SnS2 photodetectors have great application potential in wireless, unfiltered, and wearable optoelectronic systems. It also lays a foundation for designing and optimizing flexible photodetectors (PDs) with arbitrary heterogeneous combinations.