Enhancing perovskite solar cell efficiency to 28.17% by Integrating Dion-Jacobson 2D and 3D phase perovskite Absorbers

1. Efficiency of power conversion for both kinds of inorganic as well as organic perovskites-based cells has increased in the last few years. 2. FTO (window layer)/TiO2(ETL)/(PDA)(MA)n-1PbnI3n+1(absorber layer)/Csx(FA0.4MA0.6)1-xPbI2.8Br0.2(absorber layer)/ spiro-OMeTAD (HTL). 3. DJ and RP phases of 2D PSC are individually found much more stable than their 3D counterpart used for perovskite-based solar cells. 4. DJ and RP are merged to become proof of the efficiency as well as environmental stability of 2D perovskite-based solar cells. 5. This work has been carried out by using Solar Cell Capacitance Simulator (SCAPS) – 1D. Fig. (a) Structure of device showing Dion- Jacobson (DJ) 2D-3D Perovskite Based devices within AM1.5-Spectrum, (b) Spectrum showing absorption of various substances used in the device structure. [Display omitted] •Efficiency of power conversion for both inorganic and organic perovskites-based cells has increased in last few years.•FTO (window layer)/TiO2(ETL)/(PDA)(MA)n-1PbnI3n+1(absorber layer)/Csx(FA0.4MA0.6)1-xPbI2.8Br0.2(absorber layer)/ spiro-OMeTAD (HTL).•DJ and RP phases of 2D PSC are individually found more stable than their 3D counterpart used for perovskite-based solar cells.•DJ and RP are merged to become proof of efficiency as well as environmental stability of 2D perovskite-based solar cells.•This work has been carried out by using Solar Cell Capacitance Simulator (SCAPS) – 1D. Efficiency of power conversion for both kinds of inorganic as well as organic perovskites-based cells has increased in the last few years. To overcome this stability-related issue of 3D perovskite cells,2D perovskite has become an alternative option.The structure and the device, both are destabilized by the weak interactions observed in between the layers of the layered perovskite since the Ruddlesden Popper (RP) phase of 2D perovskite has a weak Van der Waal gap present in between the monoammonium cation layer.The PCE of perovskite cells has risen to 25 %. Commercialization of perovskites on a large scale as solar is a challenging task because lead is toxic.Keeping the toxic property of lead in mind we have used FTO (window layer)/TiO2(ETL)/(PDA)(MA)n-1PbnI3n+1(absorber layer)/Csx(FA0.4MA0.6)1-xPbI2.8Br0.2(absorber layer)/ spiro-OMeTAD (HTL).It has been observed that the DJ and RP phases of 2D PSC are individually found much more stable than their 3D counterpart used for perovskite-based solar cells. DJ and RP are merged to become proof of the effic