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Metal Oxide-Induced Instability and Its Mitigation in Halide Perovskite Solar Cells
Sampreetha Thampy1, Weijie Xu1, Julia W P Hsu1
1Department of Materials Science & Engineering, University of Texas at Dallas, Richardson, Texas 75080, United States.
The Journal of Physical Chemistry Letters
|August 27, 2021
Summary
Interfacial degradation in perovskite solar cells (PSCs) caused by metal oxide transport layers hinders long-term stability. Addressing these interactions is key to unlocking the full potential of efficient and durable PSCs.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Halide perovskite solar cells (PSCs) show high power conversion efficiency and potential for low-cost manufacturing.
- Long-term operational stability remains a critical challenge for practical PSC implementation.
- PSCs comprise multiple material layers with internal interfaces that can influence device performance.
Purpose of the Study:
- To highlight the issue of interfacial degradation in PSCs.
- To investigate the role of metal oxide transport layers in perovskite degradation.
- To discuss strategies for enhancing PSC performance and stability.
Main Methods:
- This perspective reviews existing research on PSC interfaces.
- It focuses on degradation mechanisms at the perovskite-transport layer interface.
- Analysis of reported mitigation strategies is presented.
Main Results:
- Interactions between perovskite absorbers and metal oxide transport layers can lead to significant interfacial degradation.
- This degradation negatively impacts PSC performance and operational stability.
- Specific interfacial degradation pathways are identified as detrimental.
Conclusions:
- Interfacial degradation is a critical factor limiting PSC stability.
- Understanding and mitigating these interactions are essential for advancing PSC technology.
- Further research into protective interface engineering is crucial for stable and efficient PSCs.
