Additive Engineering for Stable and Efficient Dion-Jacobson Phase Perovskite Solar Cells

Area of Science:

• Materials Science
• Renewable Energy
• Solid-State Chemistry

Background:

• Dion-Jacobson (DJ)-layered halide perovskites offer superior chemical stability and anisotropic properties for solar devices.
• Their unique 2D structures enable reduced or eliminated van der Waals gaps, enhancing photophysical characteristics and photovoltaic performance.

Purpose of the Study:

• To review recent advancements in additive engineering for DJ-layered halide perovskite thin film fabrication.
• To summarize additive-assisted methods for optimizing bulk and interface properties.

Main Methods:

• Investigating the impact of additives on DJ perovskite crystallization and film formation.
• Utilizing additives for trap passivation and energetic tuning at bulk and interface levels.
• Analyzing additive-assisted strategies for improved film quality and device performance.

Main Results:

• Additives significantly influence DJ perovskite crystallization and film morphology.
• Additive engineering effectively passivates defects in the bulk and at interfaces.
• Optimized processing conditions using additives lead to enhanced photophysical properties.

Conclusions:

• Additive engineering is a crucial strategy for developing high-performance DJ-layered halide perovskite solar cells.
• Further research in additive-assisted fabrication promises to unlock the full potential of these materials for efficient solar energy conversion.