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Solar cells that combine traditional silicon with cutting-edge perovskites could push the efficiency of solar panels to new heights. Beyond Silicon, Caelux, First Solar, Hanwha Q Cells, Oxford PV, Swift Solar, Tandem PV 3 to 5 years In November 2023, a buzzy solar technology broke yet another world record for efficiency.
In November 2023, a buzzy solar technology broke yet another world record for efficiency. The previous record had existed for only about five months—and it likely won’t be long before it too is obsolete. This astonishing acceleration in efficiency gains comes from a special breed of next-generation solar technology: perovskite tandem solar cells.
There’s still many breakthroughs, mainly with respect to stability, to still emerge.” Tomas Leijtens, a cofounder and the chief technology officer of Swift, says the company can now expose its cells to temperatures up to 70 °C while operating them in light without degradation.
These cells layer the traditional silicon with materials that share a unique crystal structure. In the decade that scientists have been toying with perovskite solar technology, it has continued to best its own efficiency records, which measure how much of the sunlight that hits the cell is converted into electricity.
The cells, with a size twice the thickness of a strand of hair, have significant advantages over conventional solar technologies, reducing electrode-induced shadowing by 95% and potentially lowering energy production costs by up to three times.