Inorganic Lead Halide Perovskite Micro-/Nanostructures: From Self-Assembly to Applications

Inorganic lead halide perovskites (ILHPs), an emerging class of semiconductors, hold great potential for a broad spectrum of applications, ranging from solar cells and light-emitting diodes (LEDs) to scintillators and lasers, due to ILHPs’ exceptional optical/electronic properties. The properties of ILHPs are closely related to their micro-/nanostructures, and thus controlling the micro-/nanostructures of ILHPs is highly desired to promote further development. Self-assembly, a common but powerful method, has recently been explored for the synthesis and control of the micro-/nanostructures of ILHPs. In this Review, we first summarize recent advances in the self-assembly of ILHPs into micro-/nanostructures and pay attention to main factors that can influence the self-assembly process. We then illustrate representative applications of the self-assembled micro-/nanostructures of ILHPs, including photodetectors, LEDs, lasers, and X-ray imaging. And last, we offer our perspectives on the self-assembled micro-/nanostructures of ILHPs, particularly their applications.