Figure 3

(a) J–V curves for the PEDOT:PSS/n-Si heterojunction solar cells without (w/o) and with (w) passivation of the Si surface. The inset of (a) is the digital image of the solar cells with passivation. (b) Log J–V curves of the champion PEDOT:PSS/n-Si heterojunction solar cells in the dark. (c) The EQE spectra of the champion PEDOT:PSS/n-Si solar cells without and with passivation under AM 1.5 G irradiation.