Fig. 6: Photovoltaic performances of the mixed PSCs.
From: 2D materials for conducting holes from grain boundaries in perovskite solar cells
a, b Experimental (a) and simulated (b) J–V curves of the mixed PSCs modified with different 2D flakes on perovskite GBs. c Simulated device efficiencies of the mixed PSCs with varying mobilities of 2D flakes. The three regions (I, II and III) correspond to the carrier mobilities of the three different 2D flakes (GO, MoS2 and BP), and the star symbols represent the experimental efficiencies of the PSCs modified with the three different 2D flakes in 6a. d Simulated device PCEs and efficiency enhancement for BP flakes located at different positions on the perovskite grains. The length of a single BP flake is ~42 nm in all simulations
