All-perovskite tandem solar cell based on wide bandgap perovskite achieves 29.1% efficiency

An international team researching wide bandgap perovskite films announced an effective technique to control the crystal orientation without compromising charge transport. The new approach was demonstrated in an all-perovskite tandem solar cell with an open-circuit voltage of 2. 21 V and certified power conversion efficiency of 29. 1%,A team led by China's Nanjing University has demonstrated a 0. 049 cm2 all-perovskite tandem solar cell with reduced open-circuit voltage losses in the wide-bandgap (WBG) perovskite subcell and improved overall efficiency. This result was achieved by suppressing ...

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