Cheap, highly efficient solar cells: A new stable and cost-cutting type of perovskite so

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Scientists have made a very efficient perovskite solar cell that does not require a hole-conducting layer. The novel photovoltaic achieved energy conversion efficiency of 12.8 percent and was stable for over 1000 hours under full sunlight. The innovation is expected to significantly reduce the cost of these promising solar cells.9PTBi_1ng74

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