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Strain-Modulated Phase Stability in Inorganic Perovskites: Origins, Impacts, and Regulation Strategies
Jinping Zhang1, Ying Jiang1, Jin Wang1
1State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory of Intelligent Nano Materials and Devices of Ministry of Education, Institute for Frontier Science, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
Chemsuschem
|April 1, 2025
Summary
Strain engineering stabilizes inorganic perovskites, like cesium lead triiodide (CsPbI3), by controlling crystal lattice strain. This research reviews strain impacts and breakthroughs, addressing perovskite solar cell (PSC) commercialization challenges.
Area of Science:
- Materials Science
- Renewable Energy
- Solid-State Physics
Background:
- Perovskite solar cells (PSCs) offer high efficiency and low cost but suffer from poor stability, hindering commercialization.
- Inorganic perovskites, particularly cesium lead triiodide (CsPbI3), show promise for tandem cells due to thermal stability.
- CsPbI3's black phase instability, caused by strain-induced phase transitions, limits its application.
Purpose of the Study:
- To review the characterization and impact of strain in inorganic perovskites.
- To outline recent advancements in strain engineering for stabilizing perovskite materials.
- To identify challenges and future perspectives for strain engineering in perovskite solar cells.
Main Methods:
- Review of existing literature on strain effects in inorganic perovskites.
- Analysis of characterization techniques for strain in perovskite materials.
- Synthesis of recent breakthroughs in strain engineering strategies.
Main Results:
- Strain significantly impacts the phase stability of inorganic perovskites, particularly CsPbI3.
- Strain engineering directly manipulates the crystal lattice to enhance phase stability.
- Recent breakthroughs demonstrate the potential of strain engineering to overcome instability issues.
Conclusions:
- Strain engineering is a crucial strategy for improving the long-term stability of inorganic perovskite solar cells.
- Addressing strain-related phase transitions is key to unlocking the full potential of CsPbI3 in solar energy applications.
- Further research into strain engineering challenges and perspectives is vital for commercializing stable perovskite solar cells.
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