FIGURE 7 PV-PEC performance of CO2RR. (A) From
the J-V characteristic, the intersection of the six-series
a-Si/c-Si heterojunction (SHJ) module and the operating current of the
EC cell (brown) under AM 1.5 G (blue) is represented. (B) The long-term
stability test of solar-assisted CO2RR system over 150
min. Reproduced with the permission.[121]Copyright 2021, American Chemical Society. (C) J-V characteristic
of the EC cell and (D) FE toward diverse carbon compounds of 1
cm2 DN-CuO electrodes as cathode part at broad applied
potentials. Reproduced with the permission.[122]Copyright 2019, National Academy of Sciences. (E) Schematic illustration
of the solar-driven CO2RR device. (F) I-V curves
of the PV-EC device composed of HRS-Cu as cathode and Si photodiode as
the solar energy absorbers. I-V curves consist of the
photovoltaic (green), electrocatalytic (purple), operating point marked
by a blue dot and MPP marked by a red dot. (G) FE toward ethylene and
C2+ value-added carbon compound and solar-to-electricity
conversion value of the photovoltaic-driven CO2RR
system. (H) Schematic illustration of scale-up PV-EC device composed of
MEA and enlarged 4 cm2 and 25 cm2 of
cathode electrodes. Reproduced with the
permission.[123] Copyright 2021, Springer Nature.
(I) Schematic design of triangular Ag metal PA connected to the top
layer of 3J III-V semiconductor photoabsorber. J-V curves and FE
toward carbon compounds (J,L) of Ag-PA + NiOx and (K,M)
Cu/Ag-PA +NiOx in CO2-saturated 0.1 M
KHCO3 electrolyte. Reproduced with the
permission.[124] Copyright 2022, John Wiley and
Sons