Risen Achieves 30.99% Efficiency with HJT-Perovskite Tandem Solar Cells!

What Are Tandem Solar Cells?In tandem solar cells, different materials possess distinct bandgap energies, enabling them to absorb light of varying wavelengths. The upper-layer materials (such as perovskite) absorb high-energy short-wavelength light (e.g., blue and ultraviolet light), while the lower-layer materials (such as silicon) capture low-energy long-wavelength light (e.g., red and infrared light), thereby reducing energy waste. What Are Tandem Solar Cells?In tandem solar cells,...

What Are Tandem Solar Cells?
In tandem solar cells, different materials possess distinct bandgap energies, enabling them to absorb light of varying wavelengths. The upper-layer materials (such as perovskite) absorb high-energy short-wavelength light (e.g., blue and ultraviolet light), while the lower-layer materials (such as silicon) capture low-energy long-wavelength light (e.g., red and infrared light), thereby reducing energy waste.

The theoretical efficiency ceiling for single-junction cells is about 33% (Shockley-Queisser limit), whereas tandem structures with multiple junctions can elevate this limit to over 44%.

Why Are HJT-Perovskite Tandem Cells Game-Changers?

Perovskite Challenges: The Road to Commercialization
Despite their advantages, perovskite technology still faces critical hurdles:

Future Outlook: What's Next for Risen Energy?
Risen is already translating lab success into real-world impact:

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