Perovskite Materials and Devices–– Progress and Challenges

Dear Colleagues,

Halide perovskite materials (HPMs) have been proven to be superior semiconductor materials owing to their extraordinary optical and optoelectronic properties, including high light absorptivity, long diffusion length, and large carrier mobility. Benefiting from these fascinating features, HPMs demonstrate vast potential in various optoelectronic fields, such as in solar cells, light-emitting diodes, photodetectors, and memories. Recently, explosive progress in HPM research has made them competitive with traditional semiconductor materials. For instance, the power conversation efficiency (PCE) of perovskites reaches 23.3% within several years, which is comparative to commercial Si-based solar cells. This outstanding optoelectronic performance is truly attractive; however, stability issues have become a crucial and hot topic for commercial applications. Fortunately, a series of strategies have emerged to improve the stability and efficiency of the devices, such as controlling the dimension of the materials, adjusting the treating processes, and optimizing the device structures.

Inspired by the achievements and enormous potential of HPMs for future optoelectronic applications, increasing research activities are devoted to several important methods, such as the design and synthesis of perovskite materials, and the construction of devices. In this Special Issue, we aim to highlight the state-of-the-art in the field and provide an overview of recent progress, including component and low-dimensional perovskites, device structures, and novel optoelectronic devices, all of which hold great promise in material science, engineering, optoelectronic, and nanotechnology.

Prof. Haibo Zeng
Prof. Shin-Tson Wu
Prof. Yajie Dong
Prof. Jizhong Song
Guest Editors