Scientists in Switzerland achieved 26.5% efficiency on a perovskite-silicon tandem cell measuring 4cm² and relying on industry-standard screen-printed metallization, further demonstrating the technology’s potential for large-scale production and low-cost electricity generation.
The device exhibited a small performance loss after a 400-hour thermal stability test at 85 degrees Celsius and after the same period under maximum power point tracking at 40 degrees Celsius, according to its developer. The cell was made by combining solution-processed, micrometer-thick perovskite top cells with fully-textured silicon heterojunction bottom cells.
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