Figure 2 | Scientific Reports

Figure 2

From: Stable and null current hysteresis perovskite solar cells based nitrogen doped graphene oxide nanoribbons hole transport layer

Figure 2

(a) XRD patterns of CH3NH3PbI3 films on PEDOT:PSS and NGONR layers. (b) SEM images of CH3NH3PbI3 films spin-coated on top of (left) PEDOT:PSS and (right) NGONR. Scale bar is 2 μm. (c) AFM images of CH3NH3PbI3 films on (right) PEDOT:PSS and (left) NGONR. Scale bar is 1 μm. (d) Contact angles of (left) PEDOT:PSS and (right) NGONR films.

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