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transparent electrode

New optimizations for a 24.5% efficient heterojunction solar cell

Scientists in Germany analyzed the main sources of performance loss in a silicon heterojunction cell, and developed several optimization strategies to improve overall performance. By adding a second layer of amorphous silicon at the rear of the device, and a magnesium fluoride anti-reflective layer, they were able to boost cell efficiency by around 1% to reach 24.51%.

A touch of gold for a 19.8% efficient perovskite cell

Scientists in the U.S. fabricated a semitransparent perovskite solar cell that reached 19.8%, and 28.3% in a tandem cell stacked on top of a silicon-heterojunction device. The device relies on a film of gold just a few atoms thick, grown using an innovative seeding method, which has the valuable properties of being both highly conductive and transparent.

Nanowire mesh offers better cell performance and lower costs

A new method of creating an ordered mesh of nanowires, developed by scientists at the Lawrence Livermore National Laboratory in the United States, could lead to the creation of more efficient transparent electrode layers in solar cells – and the elimination of a rare material from the manufacturing process.

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