3Crystal Structures
Mitsutoshi Nishiwaki Tatsuya Narikuri and Hiroyuki Fujiwara
Gifu University, Department of Electrical, Electronic and Computer Engineering, 1‐1 Yanagido, Gifu, 501‐1193, Japan
3.1 What Is Hybrid Perovskite?
Perovskite compounds have a simple basic structure expressed by ABX3, and a wide variety of oxide, chalcogenide, and halide materials adopt a perovskite‐based crystal structure. Figure 3.1 illustrates the structure of a cubic ABX3 perovskite, where an A‐site center cation is confined in a cage structure formed by B‐site cations and X‐site anions. In particular, the B atom is sixfold coordinated with the X atoms, creating a BX6 octahedron that is interconnected via all corners to form a three‐dimensional perovskite network ...
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