Highly efficient and stable Dion–Jacobson(DJ) 2D-3D perovskite solar cells with 26 % conversion efficiency: A SCAPS-1D study

Abstract

This paper includes the theoretical investigation performed on the device having structure FTO/TiO2/CH3NH3PbI3/PeDAMAPb4I16/Spiro- OMeTAD. This work is focused on the effects of ETLs and HTLs on the performance of the device structure. Device simulation and various parameters of the perovskite cell are investigated with the help of SCAPS-1D software. In recent years, perovskite solar cells (PSCs) have passed through many advancements but they suffered through instability due to moisture. Due to poor stability of PSCs becomes a major obstacle for its commercialization. This leads to the development of 2D perovskite manufactured from organic cations and inorganic slabs arranged alternately.2D perovskite is of two kinds: Ruddlesden - Popper (RP) phase and Dion-Jacobson (DJ) phase. Both types of 2D perovskite are observed to be much more stable than 3Dperovskite. Due to its stability, it becomes an alternative for 3D perovskite. To improve the stability and efficiency of 2D perovskite both types of 2D phases are merged. To have more stability organic cations are introduced between inorganic slabs which reduces charge transportation. Proposed DJ 2D-3D perovskite solar cells provide an impressive efficiency of 26.03 % even when exposed to much temperature and moisture. Being much more efficient and stable the 2D-DJ/3D perovskite becomes an option to be utilized in photovoltaic applications.