Audio long read: A new kind of solar cell is coming — is it the future of green energy?
Dec 29, 2023
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Discover the potential of perovskites in the renewable energy sector and their ability to increase power output in tandem solar cells. Experts discuss the challenges faced by the industry, advancements in manufacturing processes, and the ongoing research and development in this field.
Perovskite-silicon tandem cells promise to deliver at least 20% more power than silicon cells alone.
Stability, scalability, and cost remain major obstacles to the commercial viability of tandem cells.
Deep dives
The Rise of Perovskite Solar Cells
Perovskite-based solar cells are gaining attention as a potential future of green energy. Companies like Oxford PV and Q-cells are developing tandem cells that combine Perovskite and silicon to achieve higher power output. Tandem cells offer at least 20% more power than silicon cells alone. However, challenges remain in terms of stability and degradation, as Perovskite cells perform less reliably than silicon when exposed to moisture, heat, and light. Despite these challenges, Perovskite proponents believe that if stability issues can be addressed, tandem cells could revolutionize the solar power market.
The Potential and Limitations of Perovskite Cells
Perovskite cells have shown remarkable improvements in efficiency, with some achieving similar performance to silicon cells. However, their commercial viability and longevity are still in question. Current Perovskite cells are small and have short lifetimes. Manufacturing large-scale Perovskite cells and integrating them into solar panels remains a challenge. Additionally, silicon cells have become incredibly cheap and efficient, with large-scale manufacturing capacity. Analysts argue that in the short term, Perovskites may not significantly impact the growth of solar power, as silicon modules continue to dominate.
Challenges and Prospects for Perovskite Tandem Cells
Perovskite-silicon tandem cells offer the potential to achieve higher efficiency and power density. By combining the strengths of both materials, tandem cells can generate 25-50% more power compared to silicon cells alone. Manufacturing challenges, such as stability, scalability, and cost, need to be addressed to make tandem cells commercially viable. Researchers are working towards enhancing stability and overcoming degradation issues of Perovskite cells. Accelerated aging tests and outdoor studies are being conducted to assess the performance and durability of tandem modules. Despite current limitations, if the technical and economic hurdles are overcome, tandem cells could offer lower-cost, higher-value solar modules with increased power output.
Perovskites are cheap, abundant photovoltaic materials that some have hailed as the future of green energy.
Around the world, companies are layering perovskites on top of traditional silicon to develop so-called tandem solar cells that some think could deliver at least 20% more power than a silicon cell alone.
However, there remain multiple issues to overcome before these products are ready for widespread uptake in the notoriously competitive solar-power market.