method. Characterizations and performance measurements. The morphological features of the samples were examined by SEM (FEI Nova-450). The photovoltaic performances of the PSC unit were measured under simulated AM1.5 G illumination (1 sun, 100 mW cm-2) provided by a solar light simulator (Oriel Solar Simulator, Model 91160). The current-voltage characteristics were recorded by a Keithley 2400 source meter. The IPCE spectra were measured as a function of wavelength controlled by a monochromator. The active area of the PSC in this study is 0.1 cm2. The CV and galvanostatic charging-discharging curves of the supercapacitor unit were evaluated on a Chenhua CHI-760 electrochemical workstation. The photocharging/galvanostatic-discharging characteristics of the solar capacitors were evaluated under continuous simulated solar illumination. The areal specific capacitance (C) and energy density (E) of the supercapacitor unit were calculated by the following equations: where and represent the applied discharge current, the area of the I, S, ∆t, ∆V electrode, the discharge time, and the potential window, respectively. Table S1. Performances of representative photo-chargeable solar capacitors in the literatures. Voltage References Photovoltaic unit Energy storage unit (%) η plateau (V) All-inorganic This work All-inorganic PSC 1.2 5.1 Supercapacitor Polymer electrolyte [30] Organic-inorganic PSC 0.70 -- Supercapacitor Liquid electrolyte [35] Organic-inorganic PSC 0.70 4.7 based Supercapacitor
method. Characterizations and performance measurements. The morphological features of the samples were examined by SEM (FEI Nova-450). The photovoltaic performances of the PSC unit were measured under simulated AM1.5 G illumination (1 sun, 100 mW cm-2) provided by a solar light simulator (Oriel Solar Simulator, Model 91160). The current-voltage characteristics were recorded by a Keithley 2400 source meter. The IPCE spectra were measured as a function of wavelength controlled by a monochromator. The active area of the PSC in this study is 0.1 cm2. The CV and galvanostatic charging-discharging curves of the supercapacitor unit were evaluated on a Chenhua CHI-760 electrochemical workstation. The photocharging/galvanostatic-discharging characteristics of the solar capacitors were evaluated under continuous simulated solar illumination. The areal specific capacitance (C) and energy density (E) of the supercapacitor unit were calculated by the following equations: where I, S, ∆t, and ∆V represent the applied discharge current, the area of the electrode, the discharge time, and the potential window, respectively. Table S1. Performances of representative photo-chargeable solar capacitors in the literatures. References Photovoltaic unit Energy storage unit Voltage plateau (V) η (%) This work All-inorganic PSC All-inorganic Supercapacitor 1.2 5.1 [30] Organic-inorganic PSC Polymer electrolyte Supercapacitor 0.70 -- [35] Organic-inorganic PSC Liquid electrolyte based Supercapacitor 0.70 4.7
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