canFig. 6. J–V measurements of DSSCs prepared by using the single-layer photoanodesof paste-2, double-layer photoanode of paste-3/paste-2, and single-layer photoan-ode of paste-4 (A) (see detail in Table 3); external quantum efficiency of DSSCsprepared by using paste-4, paste-2, double-layer paste-3/paste-4 (B) (please seedetail in Table 3).