We report on fabrication of 4-terminal all-perovskite tandem solar cells with power conversion efficiencies exceeding 23% by mechanically stacking semitransparent 1.75 eV wide-bandgap FA_0.8Cs_0.2Pb(I_0.7Br_0.3)₃ perovskite top cells with 1.25 eV low-bandgap (FASnI₃)_0.6(MAPbI₃)_0.4 bottom cells. The top cells use MoO_x/ITO transparent electrodes and achieve transmittance up to 70% beyond 700 nm.

中文翻译：

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四端子全钙钛矿串联太阳能电池实现超过23％的功率转换效率

我们报告了通过机械堆叠半透明的1.75 eV宽带隙FA _0.8 Cs _0.2 Pb（I _0.7 Br _0.3）₃钙钛矿顶部电池和1.25 eV低功率的4端子全钙钛矿串联太阳能电池的制造，功率转换效率超过23％带隙（FASnI ₃）_0.6（MAPbI ₃）_0.4底部单元格。顶部电池使用MoO _x / ITO透明电极，并且在700 nm以上的地方可获得高达70％的透射率。