Figure 4

(a) RS J–V characteristics of PSCs made with SC-TiO2 CL, SP-TiO2 CL, OEI-TiO2 CL-60 sec, and OEI-TiO2 CL-30 + 30 sec. (b) IPCE spectra of PSCs made with SC-TiO2 CL, SP-TiO2 CL, and OEI-TiO2 CL-30 + 30 sec.

(a) RS J–V characteristics of PSCs made with SC-TiO2 CL, SP-TiO2 CL, OEI-TiO2 CL-60 sec, and OEI-TiO2 CL-30 + 30 sec. (b) IPCE spectra of PSCs made with SC-TiO2 CL, SP-TiO2 CL, and OEI-TiO2 CL-30 + 30 sec.