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A Perspective on Spatiotemporal Engineering of Multidimensional Heterointerfaces in Perovskite Solar Cells.
Ziyue Feng1, Mingrui He1, Zhen Li1
1Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney New South Wales 2052, Australia.
ACS Nano
|July 29, 2025
Summary
Multidimensional interface engineering stabilizes perovskite solar cells by mitigating defects and ion migration. This approach enhances efficiency and longevity, addressing key challenges in perovskite photovoltaics.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) exhibit excellent cost-performance but suffer from instability due to ion migration and defects, especially at interfaces.
- Nonradiative recombination at interfaces is a major limitation for PSC efficiency and long-term operational stability.
- Addressing these interfacial issues is critical for realizing the full potential of PSC technology.
Purpose of the Study:
- To explore multidimensional interface engineering as a strategy to overcome stability and efficiency limitations in PSCs.
- To systematically review passivation techniques using low-dimensional perovskites and other materials for defect mitigation and improved charge dynamics.
- To provide theoretical frameworks and design recommendations for stable PSC interfaces.
Main Methods:
- Systematic evaluation of passivation strategies using 2D, 1D, and 0D perovskites, antiperovskites, polymers, and small molecules.
- Analysis of the impact of these materials on defect passivation, charge carrier dynamics, and operational stability.
- Application of theoretical models including adsorption dynamics (GCS), interfacial thermodynamics (Guggenheim), and reaction kinetics (Marcus/Gerischer).
Main Results:
- Low-dimensional materials and related compounds effectively mitigate interfacial defects in PSCs.
- Interface engineering influences charge dynamics, reducing nonradiative recombination and enhancing stability.
- Theoretical frameworks provide insights into the mechanisms governing interfacial behavior and stability.
Conclusions:
- Multidimensional interface engineering is a promising approach for developing stable and efficient perovskite solar cells.
- Rational design of interfaces, guided by theoretical principles, is key to overcoming PSC limitations.
- Cross-dimensional heterointerface engineering offers a pathway towards durable and high-performance perovskite photovoltaics.
