Kinetic Monte Carlo Simulation of Perovskite Solar Cells to Probe Film Coverage and Thickness. Issue 3 (1st February 2021)

• Record Type: Journal Article
• Authors: Bahrami, Behzad; Mabrouk, Sally; Gurung, Ashim; Reza, Khan Mamun; Elbohy, Hytham; Pathak, Rajesh; Saianand, Gopalan; Adhikari, Nirmal; Dubey, Ashish; Rahman, Sheikh Ifatur; Qiao, Quinn
• Is Part Of: Advanced energy & sustainability research. Volume 2:Issue 3(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-02-01
• Subjects: capping layer coverage -- capping layer thickness -- full perovskite solar cell operation -- kinetic Monte Carlo simulation -- perovskite solar cells; Renewable energy sources -- Periodicals; Environmental sciences -- Periodicals; Sustainable development -- Periodicals; 621.042
• DOI: 10.1002/aesr.202000068
• Languages: English
• ISSNs: 2699-9412

Abstract

Abstract : Perovskite solar cells (PSCs) have received considerable attention in recent years due to their low processing cost and high‐power conversion efficiency. However, the mechanisms of PSCs are not fully understood. A model based on a probabilistic and statistical approach needs to be developed to simulate, optimize, and predict the photovoltaic (PV) performance of PSC. Herein, the 3D model based on the kinetic Monte Carlo (KMC) approach is developed to simulate 3D morphology of perovskite‐based solar cells and predict their PV performances and charge dynamics. The developed 3D model incorporates the temporal and physical behavior of perovskites, such as charge generation, transport, and recombination. The KMC simulation results show that pin holes‐free perovskite films with a homogenous 400 nm thick perovskite capping layer achieve the highest power conversion efficiency of 20.85%. However, the shortest apparent charge transport time ( τ t ) and the longest apparent charge carrier recombination lifetime ( τ r ) are found for the champion device. PV performance from the fabricated device is used to validate this simulation model. This model can provide a significant conceptual advance in identifying bottlenecks and guiding novel device designs to further improve the performance of perovskite PVs. Abstract : A 3D model based on the kinetic Monte Carlo (KMC) approach is developed to simulate perovskite‐based solar cells' morphology and predict their photovoltaic performances and charge dynamics. This 3D model incorporates perovskites' temporal and physical behavior, such as charge generation, transport, and recombination, to identify the optimal perovskite capping layer coverage and thickness.