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Towards Long-Term Stable Perovskite Solar Cells: Degradation Mechanisms and Stabilization Techniques
Namyoung Ahn1, Mansoo Choi2,3
1Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87544, USA.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|November 24, 2023
Summary
Perovskite solar cells show promise but require improved stability for commercial use. This review details degradation causes and strategies to enhance operational longevity for practical perovskite solar devices.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells are a promising photovoltaic technology.
- Their commercial viability is hindered by operational stability issues.
- Stability under realistic conditions (1 sun, ambient) remains a key challenge.
Purpose of the Study:
- To review the fundamental causes of perovskite solar cell instability.
- To discuss recent advancements in preventing perovskite degradation.
- To explore strategies for enhancing operational stability in perovskite devices.
Main Methods:
- Review of literature on perovskite degradation mechanisms.
- Analysis of chemical decomposition pathways under light and electrical bias.
- Overview of techniques to mitigate ion migration and trapped charges.
Main Results:
- Identified ion migration and trapped charges as fundamental causes of permanent degradation.
- Detailed interplay between ionic and charge dynamics in degradation.
- Highlighted strategies to slow degradation during operation.
Conclusions:
- Addressing ion migration and charge trapping is crucial for perovskite stability.
- Advanced techniques can significantly improve the operational lifetime of perovskite solar cells.
- Enhanced stability is key to realizing the commercial potential of perovskite photovoltaics.
