  In this work, we present a novel artificial photosynthetic paradigm with
square meter (m2) level scalable production by integrating photovoltaic
electrolytic water splitting device and solar heating CO2 hydrogenation device,
successfully achieving the synergy of 1 sun driven 19.4% solar to chemical
energy efficiency (STC) for CO production (2.7 times higher than state of the
art of large-sized artificial photosynthetic systems) with a low cost
(equivalent to 1/7 of reported artificial photosynthetic systems). Furthermore,
the outdoor artificial photosynthetic demonstration with 1.268 m2 of scale
exhibits the CO generation amount of 258.4 L per day, the STC of ~15.5% for CO
production in winter, which could recover the cost within 833 suuny days of
operation by selling CO.
