Risen Energy Achieves 30.99% Record HJT-Perovskite Cell Efficiency
Risen Energy has announced a groundbreaking achievement in solar PV efficiency. The company claims a 30.99% conversion efficiency for its heterojunction (HJT) silicon-perovskite tandem solar cell. This record-setting efficiency was certified by the Chinese National Photovoltaic Product Quality Supervision and Inspection Center.
What Makes This a Breakthrough in Solar Technology?
Silicon-perovskite tandem cells are widely seen as the next-generation PV technology. These cells combine a silicon base layer with perovskite thin films, allowing them to absorb a wider range of sunlight and convert more energy. This advancement has the potential to:
✅ Increase energy output per panel
✅ Lower production costs
✅ Reduce carbon emissions
While Risen Energy did not specify the cell size, most record-breaking efficiencies are typically achieved in laboratory conditions rather than commercial-scale products.
HJT Cells: The Future of Tandem Solar?
Heterojunction technology (HJT) is a promising candidate for tandem PV applications. Oxford PV, a leader in this field, previously shipped the market’s first commercial silicon-perovskite tandem modules with 24.5% efficiency.
According to Risen Energy, HJT cells are naturally suited for tandem integration, unlike TOPCon cells, which require additional structural modifications. This gives HJT technology a potential edge in mass production and cost efficiency.
Industry Experts Weigh In
A five-year study by the Fraunhofer research institute concluded that silicon-perovskite tandem cells are a key technology for advancing solar energy. However, some industry experts remain skeptical.
Radovan Kopecek, founder of ISC Konstanz, suggests that silicon-based PV will continue to dominate due to lower costs and improving efficiencies. Despite this, companies like Risen Energy and Oxford PV are pushing the boundaries of solar technology with record-breaking innovations.
The Road Ahead for HJT-Perovskite Solar Cells
With continued R&D and industry collaboration, tandem solar technology could soon enter mass production, making high-efficiency solar modules more accessible. As the solar industry evolves, HJT-perovskite cells could become a game-changer in renewable energy.
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