Advancements in Tandem and Perovskite Solar Cells
Advancements in tandem and perovskite solar cells in 2025 focus on increasing efficiency, durability, transparency, flexibility, and scalability, reflecting significant progress in photovoltaic technology.
Key Advancements in Tandem and Perovskite Solar Cells
1. Efficiency Records and Improvements
- Perovskite–silicon tandem solar cells continue to break efficiency records, with Chinese manufacturer LONGi achieving a world record of 34.6% efficiency using a two-terminal device. Similarly, Taiwan-based Academia Sinica developed a two-terminal tandem cell at 31.5% efficiency, and a Japanese team (EneCoat Technologies) partnered with Toyota achieved 30.4% efficiency with a four-terminal device using a proprietary low-temperature deposition process.
- Another breakthrough from China utilized a four-terminal tandem cell combining perovskite and copper indium gallium, reaching 21.26% efficiency with excellent bifacial performance (92.2%) through enhanced crystallinity and film quality via a solvent annealing strategy.
2. Transparency and Novel Layer Combinations
- Researchers developed transparent tandem solar cells combining perovskite and organic layers that maintain 30% transparency and hit a record 12.3% efficiency. This innovation opens possibilities for integrating solar cells into windows and other transparent surfaces where light passage is essential.
3. Flexibility and Durability Enhancements
- Chinese scientists advanced flexible tandem solar cells, improving their efficiency to 24.6% while significantly enhancing durability by boosting the adhesion between the top layered materials. This progress supports the use of tandem solar technology in flexible and wearable applications or curved surfaces.
4. Scalability and Manufacturing
- Perovskite solar cells are advancing in terms of scalability for mass manufacturing, with companies like UtmoLight achieving 18.1% cell efficiency and indicating readiness for commercial production.
5. Layered Architecture and Material Innovation
- Tandem cells leverage the high-bandgap perovskite top cell to absorb high-energy photons and a silicon or other material bottom cell for low-energy photons, maximizing solar spectrum utilization. Advances in material quality, deposition techniques, and device architecture continue to push performance and reliability.
Summary Table of Recent Key Milestones
| Feature | Details | Efficiency Achieved | Highlights |
|---|---|---|---|
| Two-terminal tandem cells | Perovskite–silicon configuration | 34.6% (LONGi) | World record efficiency |
| Four-terminal tandem cells | Perovskite–silicon and perovskite–copper indium gallium | 30.4% (Japan), 21.26% (China) | Low-temp deposition, solvent annealing strategies |
| Transparent tandem cells | Perovskite + organic layers with 30% transparency | 12.3% | Suitable for window integration |
| Flexible tandem cells | Enhanced adhesion for durability and flexibility | 24.6% | Enables curved and wearable solar applications |
| Scalability & manufacturing | Commercial readiness demonstrated by companies like UtmoLight | 18.1% | Mass production potential |
These advancements demonstrate that tandem and perovskite solar cells are not only pushing efficiency boundaries but also expanding application possibilities—transparent, flexible, and scalable solar solutions are becoming increasingly viable, promising a transformative impact on photovoltaic technology and renewable energy deployment.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-advancements-are-being-made-in-tandem-and-perovskite-cells/
