Octahedral units in halide perovskites

Area of Science:

• Materials Science
• Solid-State Chemistry
• Optoelectronics

Background:

• Metal halide perovskites (ABX ₃) exhibit exceptional photophysical properties for optoelectronic devices.
• The octahedral unit (BX ₆) is the fundamental building block influencing perovskite material properties.

Purpose of the Study:

• To explore the fundamental concepts of octahedral configurations in metal halide perovskites.
• To understand the effects of octahedral manipulation on crystal structure, photophysical properties, and device performance.
• To guide future research for stable and high-performance perovskite-based devices.

Main Methods:

• Review and synthesis of existing literature on octahedral engineering in halide perovskites.
• Discussion of characterization techniques for octahedral units.
• Summarization of approaches for rational manipulation of octahedral units.

Main Results:

• Octahedral configurations significantly influence halide perovskite properties.
• Targeted manipulation of octahedra offers a promising route to enhance device stability and performance.
• Current research on halide perovskite octahedral engineering is less explored compared to oxide perovskites.

Conclusions:

• Rational engineering of the octahedral unit is crucial for advancing metal halide perovskite technology.
• Further research is needed to align octahedral manipulation strategies with device-level investigations.
• This work provides a framework for understanding and controlling perovskite properties through octahedral engineering.