potential?Fuctuation in real sunlightРTWO CELLsРThis is the first time that efficiency over 10 % has been achieved with low-cost light harvesters and Earth-abundant electrocatalysts.РSTH: 12.3 %?Theoretical STH : 17.8% (1.5eV)Р2.3 Two Absorber TandemsРTWO CELLS?Double illuminated area?Bandgap: Trade-off between the Current and VoltageРTwo Absorber TandemsРDespite great effort toward developing such tandems, the best efficiencies have reached only around 1 %РSTH:0.91%Р2.3 Two Absorber TandemsРCombining the photoanode and photovoltaic with a platinum cathode for hydrogen evolution, standalone one-sun water splitting photocurrents of nearly 2 mAcm−2 were achieved, corresponding to a STH efficiency of nearly 2.4 %РPhotoanode: Fe2O3?most widely studied?suitable bandgap?stability?natural abundance
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