U.S. DOE Updates Perovskite Solar Cell R&D Program on June 4, 2026, Focusing on 27% Efficient Tandem Cells and Advanced Stability Technologies
The U.S. Department of Energy (DOE)’s Solar Energy Technologies Office (SETO) has provided an updated status report on its Fiscal Year 2020 Perovskite Solar Cell Research and Development Funding Program. This program aims to support breakthroughs across various aspects of perovskite technology, including efficiency, stability, manufacturing methods, and performance validation. The latest update emphasizes the critical importance of achieving high efficiency and reliability for practical deployment.
Key Achievements and Supported Initiatives
- Development of High-Efficiency Tandem Cells: One of the supported projects focuses on developing a manufacturing process for 2-terminal perovskite-silicon tandem cells that boast a high power conversion efficiency of 27%. This tandem architecture holds the potential to surpass the efficiency limits of conventional silicon solar cells, promising a significant improvement in the cost-performance ratio of photovoltaics.
- Stability Enhancement Technologies: The program also prioritizes improving the long-term stability, which remains one of the greatest challenges for perovskite solar cells. Specifically, efforts are supported for enhancing interfacial mechanical adhesion using self-assembled monolayers (SAMs). This approach aims to boost device durability, identify degradation pathways, and establish a clear path towards extended operational lifetimes.
- Mitigating Reliability Concerns: These technological developments are crucial for alleviating reliability concerns surrounding perovskite solar cells, thereby accelerating their introduction into commercial markets. The program seeks to bridge the gap between laboratory achievements and real-world market applications.
Background and Industry Context
Perovskite solar cells are widely regarded as the next frontier in the photovoltaic industry due to their exceptional performance potential and low-cost manufacturing capabilities. However, a primary barrier to their widespread commercialization has been the lack of long-term stability and reliability, especially under prolonged outdoor environmental exposure. Strategic investments by SETO within the U.S. DOE are critical for overcoming these technical hurdles and maintaining U.S. leadership in clean energy technologies.
Future Outlook
Continued support through SETO’s funding program is indispensable for the transition of perovskite solar cell technology from research to practical deployment. High-efficiency tandem cell and stability enhancement technologies development will further drive down the cost of solar power and accelerate its adoption. These advancements are expected to strengthen U.S. energy security and contribute significantly to climate change mitigation efforts.
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