fig3

Figure 3. Simulation results of perovskite homojunction devices. (A) J-V curves with various values of N_A at a p-type MAPbI₃/Spiro-OMeTAD interface. Reproduced with permission from Li et al.^[39]. (B) Schematic of inverted p-n homojunction PSC with ultrathin HTL. Reproduced with permission from Maram et al.^[40]. (C) Energy band diagram as a function of N_A in p-MAPbI₃ (at fixed N_D of 10¹⁷ cm^-3). (D) J-V curves of optimized C-PSC and homojunction PSC. Reproduced with permission from Lin et al.^[42]. PSC: Perovskite solar cell; HTL: hole transport layer.