Progress in the Stability of Small Molecule Acceptor-Based Organic Solar Cells
Han Xu1, Jianhua Han1,2, Anirudh Sharma1
1Materials Science and Engineering Program (MSE), Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
Advanced Materials (Deerfield Beach, Fla.)
|December 5, 2024
Summary
Organic solar cells show promise, but stability issues hinder adoption. This review details degradation pathways and mitigation strategies for organic solar cell components to improve longevity.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Organic solar cells (OSCs) have seen efficiency gains with small molecule acceptors.
- Device stability remains a critical barrier to widespread commercialization.
Purpose of the Study:
- To review degradation mechanisms affecting various layers in organic solar cells.
- To explore chemical and morphological degradation pathways.
- To discuss mitigation strategies for enhancing device longevity.
Main Methods:
- Literature review of degradation studies under light, heat, moisture, and oxygen.
- Analysis of degradation in photoactive layers (polymer donors, small molecule acceptors).
- Examination of bulk heterojunction morphological stability and interlayer/electrode degradation.
Main Results:
- Detailed chemical degradation pathways for polymer donors and small molecule acceptors are identified.
- Morphological instability of the bulk heterojunction impacts performance.
- Degradation of anode/cathode interlayers and electrodes affects overall efficiency and stability.
Conclusions:
- Understanding degradation mechanisms is key to improving organic solar cell stability.
- Mitigation strategies offer practical solutions for enhancing device longevity.
- Further research is needed to address remaining challenges for real-world applications.
