A research team from the Chinese Academy of Sciences has set a new world record for perovskite-organic tandem solar cell efficiency, achieving a stable photoelectric conversion efficiency of 28.04%. This breakthrough, published in the journal Nature, marks a significant step towards the practical application of this technology. In separate news, Mastercard is reportedly considering selling a majority stake in its UK payment subsidiary, Vocalink, to address concerns about foreign ownership of critical financial infrastructure. AI
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RANK_REASON The cluster contains a research breakthrough with a new world record efficiency for solar cells, published in a top journal. [lever_c_demoted from research: ic=1 ai=0.1]
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