Numerical Study on the Effect of Dual Electron Transport Layer in Improving the Performance of Perovskite–Perovskite Tandem Solar Cells

Citations Over TimeTop 10% of 2023 papers

Abstract

Abstract C Perovskite–perovskite tandem solar cells (P‐TSCs) are an attractive option to overcome the limitation of Si‐based solar cells due to their ability to deposit in both the top and bottom cells by a simple solution process. Despite these advantages, the power conversion efficiency (PCE) of P‐TSCs still falls behind that of Si‐perovskite tandem devices and is highly limited by the nonradiative recombination between the perovskite and electron transport layer (ETL) interface. In this work, with the help of numerical simulations (SCAPS 1D), the influence of the various ETLs on the performance of P‐TSCs is studied. Different ETLs such as C 60 , PCBM, ZnO, WO 3 , CdSe, and In 2 O 3 , BCP are incoroprated, which directly interface with the perovskite absorber layer in top (high bandgap absorber layer) and bottom subcell (low bandgap absorber layer) of P‐TSC. The simulation analysis shows that reducing the interface surface defect density and band offsets at the ETL/perovskite interface significantly helps achieving high‐efficiency P‐TSC over 35% . Various remediation for incorporating present simulation analysis into practical devices for better‐performing P‐TSCs is also provided. The analysis provides a pathway toward understanding the reasons behind the current trend of low PCE in 2 terminal P‐TSC and achieving high‐efficiency P‐TSC solar cells.

Related Papers

• → Perovskite-perovskite tandem photovoltaics with optimized band gaps(2016)1,453 cited
• → 10.2% Power Conversion Efficiency Polymer Tandem Solar Cells Consisting of Two Identical Sub‐Cells(2013)437 cited
• → Perovskite-based tandem solar cells(2020)170 cited
• → All‐Inorganic Perovskite‐Based Monolithic Perovskite/Organic Tandem Solar Cells with 23.21% Efficiency by Dual‐Interface Engineering (Adv. Energy Mater. 16/2023)(2023)3 cited
• → Computational Study of Perovskite/Perovskite Lead-free Tandem Solar Cell Devices(2022)3 cited