A microwave-assisted template-free route for large-scale synthesis of photoluminescent single crystal CsPbI3 nanotubes

Abstract

Great efforts have been devoted to the synthesis of various CsPbX₃ nanostructures in view of their excellent photovoltaic performance and promising optoelectronic applications. However, the preparation of high-quality one-dimensional cesium lead halide nanotubes still remains challenging and unexplored. Here, we report a microwave-assisted synthetic approach for high-quality single crystalline CsPbI₃ nanotubes featuring highly uniform sizes and stable and bright photoluminescence. Furthermore, a CsPbI₃ nanotube based photodetector was assembled, which exhibits high sensitivity, stability and a fast response to 405 nm wavelength light. As a new member of the all-inorganic CsPbX₃ nanostructure family, CsPbI₃ nanotubes could provide a potential platform for understanding their fundamental properties and paving the way for their future application in optoelectronic devices.