Improving the Performance of Lead‐Free FASnI₃‐Based Perovskite Solar Cell with Nb₂O₅ as an Electron Transport Layer

Abstract

In this work, the photovoltaic outputs of the lead-free FASnI 3 -based perovskite solar cells are discussed by using Solar Cell Capacitance Simulator in One Dimension. The device outputs estimated theoretically in this study are almost equal to the experimental results, thereby verifying accuracy of this simulation. To find the decent electron transport layer (ETL), herein, various ETLs are presented instead of C 60 /BCP in the experimental FASnI 3 -based perovskite solar cell (PSC). The designed FASnI 3 PSC utilizing niobium pentoxide (Nb 2 O 5 ) as an ETL with an appropriate band alignment and a low lattice mismatch at FASnI 3 /ETL interface provides better efficiency by decreasing recombination at front side. The performances of the proposed PSC are also measured by altering the thickness and doping of ETL and absorber, interface defects, and series and shunt resistances. Furthermore, this paper reports the calculation of recombination coefficients at absorber/ETL interface, depletion region, and quasi-neutral region. An improved efficiency of 22.24% is evaluated at optimized thicknesses of 100 nm for HTL, 500 nm for absorber, 50 nm for ETL, and 50

Defect Regulation of Efficient Dion–Jacobson Quasi-2D Perovskite Solar Cells via a Polyaspartic Acid Interlayer

“…The related material and defect parameters for simulation are provided in Tables and , respectively. The parameters are extracted either from the experiment or from the reported literature. − The values of defect density for the perovskite bulk layer and the PTAA/perovskite interface varied for order of magnitude ranging from 10 14 to 10 17 cm –3 and from 10 7 to 10 10 cm –3 , respectively.…”

Simulations and Suitability Study of Inorganic Cu‐Based Hole‐Transport Layers in Planar CH3NH3SnI3‐Based Perovskite Solar Cell and Module

“…SRH recombination model has been implemented for interface recombination losses and device performance. [ 52,53 ] Lower temperatures do not facilitate recombination; however, an incremental rise in temperature deeply influences the recombination phenomenon. Electron–hole recombination increases with an increase in temperature due to the enhanced electron–phonon coupling.…”

Optimizing the Performance of Tin‐Based Perovskite Solar Cells Employing 2D Tungsten Disulfide as an HTL by Numerical Simulation

“…Consequently, by examining the lattice mismatch percentage, the performance of the proposed heterostructure can be realized. [ 52,53 ] The degree of lattice mismatch between different ETLs and absorbing layers is shown in Table 6 . The lattice mismatch between Cd 0.5 Zn 0.5 S and the absorption layer is lower than the other materials.…”

“…This can be attributed to a decrease in the barrier height for the majority charge carriers at the backcontact interface with increasing metal work function, thereby improving the performance of the device. [52,61,62] These results suggest that a back-contact metal work function above 5.4 eV would be optimal for better performance for the proposed PSCs.…”