Dear Colleagues,

Over the past few years, there has been tremendous progress in the development of halide perovskites semiconducting materials for high-efficiency photovoltaic devices. Particularly, beyond the bulk polycrystalline perovskite thin films, nano scale halide perovskites (e.g., zero-dimensional quantum dots, one-dimensional nanowires and two-dimensional sheets) provide new opportunities to tune the materials’ optical, electronic, and mechanical properties for a variety of applications. In this Special Issue, we address the remaining challenges to be resolved, so as to achieve a better understanding of the materials structure–property relationship, as well as new applications for next generation solar cells, light emitting diodes, sensors, nano electronics and nano photonics. In this pioneering Special Issue, we discuss the synthesis and morphology control of perovskite nanostructures, the characterization of their unique properties, and the assembly and device applications of such exciting new materials. Contributions from science and engineering community highlight interesting new discoveries and new research directions, which would excite more future studies and inspire new ideas.

Dr. Letian Dou
Guest Editor

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• Halide Perovskite
• Nano materials
• Nano electronics
• Nano photonics
• Flexible devices