Solar technology has hit a major milestone with tandem perovskite-silicon cells achieving 33.9% efficiency — far beyond the practical limits of silicon alone. The breakthrough was certified by independent laboratories in 2024.
Perovskite materials can be printed onto existing silicon cells at low cost, capturing parts of the light spectrum that silicon misses. Commercial production is expected to begin by 2026, potentially reducing the cost of solar electricity by another 30%.
“9% efficiency — far beyond the practical limits of silicon alone.”
"This is the future of solar," said researchers. "We're approaching the theoretical maximum efficiency for single-junction cells, but tandems open up a whole new frontier." The technology could accelerate the global transition to renewable energy.
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