Largely enhanced <i>V</i>_OC and stability in perovskite solar cells with modified energy match by coupled 2D interlayers

Abstract

The performance of perovskite solar cells is largely enhanced by modifying the energy match of electrodes with coupled 2D interfacial layers. The <italic>V</italic>_OC is about 0.17 V increased to 1.135 V and 1.176 V for the CH₃NH₃PbI₃ and CH₃NH₃PbI_2.5Br_0.5 based devices, respectively. The PCE of the PEDOT:PSS based p–i–n solar cells is up to 19.14%.