Figure 5: J-V and IPCE spectra.
From: Inorganic hole conductor-based lead halide perovskite solar cells with 12.4% conversion efficiency

(a) Current–voltage characteristics of the heterojunction solar cells with (red) and without (black) CuSCN measured in the dark and under 100 mW cm−2 photon flux (AM1.5G). (b) The corresponding IPCE spectra showing improved photocurrent with the addition of the CuSCN HTM.