Advances in Halide Perovskites

Dear Colleagues,

Organic–inorganic halide perovskite materials have experienced tremendous interest from the research community due to their easy fabrication process and high-power conversion efficiency (PCE). Compared to silicon technology, perovskites have the potential to be employed on flexible substrates and semi-transparent windows, areas where silicon is absent. In less than 15 years, the best perovskite solar cell devices have passed the benchmark of 25.8% PCE, making this emerging technology competitive with conventional silicon cells. Efficiency is not the main challenge anymore in perovskite materials; the research community is now slowly shifting toward a more fundamental and crucial question, which is: “How to build perovskite cells with long-term stability”? In order to facilitate the commercialization of perovskite solar cells, their stability needs to be improved to compete with other technology on the market. In this Special Issue of Crystals, we would like to collect some pioneering works in the field that investigate innovative approaches to increase the stability of perovskite absorbers, such as material composition, halide and cation mixing, surface passivation, interface layers, 2D perovskites, crystal structure and orientation, and more.

Dr. Jérémy Hieulle
Dr. Zonghao Liu
Guest Editors

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• perovskite
• long-term stability
• surface passivation
• 2D perovskite
• halide mixing and cation mixing
• crystal orientation