Bipolar photoresponse in a BaTiO3/ZnO heterojunction photodetector for precise light-wavelength discrimination.
Bipolar photoresponse photodetectors enable spectral discrimination and optical logic, but conventional devices often suffer from poor stability and complex fabrication. Here, we report a fully solid-state, chip-scale BaTiO3/ZnO heterojunction photodetector with a simple structure, compact size, and precise wavelength...