Scanning Electrochemical Microscope Studies of Charge Transfer Kinetics at the Interface of the Perovskite/Hole Transport Layer

Figure 1

(a) Chemical structure of PEDOT: PSS. (b) Energy level diagrams of FTO, CH₃NH₃PbI₃, NiO, and PEDOT: PSS. (c) Crystal structure of perovskite. (d) SECM top view of PEDOT: PSS/CH₃NH₃PbI₃ and (e) SECM top view of NiO/CH₃NH₃PbI₃.