FIG 1 (IMAGE)

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FIG 1

Caption

Fig. 1| (a) MAPbI3/MoS2 PDs with their relative band alignment and charge transfer mechanisms using 1T and 2H phases of MoS2. (b) Schematic of planar (top) and vertical (bottom) structures of MAPbI3/MoS2 PDs and the drain bias and illumination effect on carrier transportation and separation. (c) schematic of MAPbI3/BP/MoS2 PD, and charge transfer mechanism showing both type-I and type-II band alignment at perovskite/BP and BP/MoS2 interfaces, respectively. (d) The energy-band diagram under flat-band conditions of planar inverted perovskite solar cells with different materials as the hole transport layer, including MoS2.

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