Performance analysis of an efficient and stable perovskite solar cell and a comparative study of incorporating metal oxide transport layers

Abstract

As poor stability is the primary constraint for the commercialization of perovskite solar cells, improving stability has been the primary focus of recent research works regarding solar cells that make use of perovskite materials. Different metal oxide transport layers are being used with the aim of fabricating stable perovskite solar cells. A stable and efficient solar cell with both metal oxide transport layers (ZnO and N i O X ) and a perovskite (methyl ammonium lead iodide) absorber layer is simulated in this work, and a comparison of performance parameters is made with other transport layers from the literature. The issue of optimization regarding the thickness of the absorber layer and the doping concentration in the absorber and transport layers has been addressed, and the effect of defect concentration at the interface has been investigated. Optimum performance is achieved with an absorber layer of thickness 800 nm. Linear grading is also introduced in the absorber layer by varying the concentration of different halides, which increases the efficiency by approximately 8% owing to the increase in the short circuit current density.

Enhanced light management and optimization of perovskite solar cells incorporating wavelength dependent reflectance modeling

“…There was only experimental research in the early stage of this class of PV technology. However, many simulation works of PSCs have been published in recent years [ 10 , 11 , 12 ]. In most of these articles, the thickness of different layers, doping profile, defect concentration in materials and interfaces, and device resistances (series and shunt) are varied to optimize the device [ 13 , 14 ].…”

Stability Issues of Perovskite Solar Cells: A Critical Review

“…Aiming to improve the stability of PSCs, several techniques were implemented in the past, which include using different electron transport layers (ETLs) and HTLs, using buffer layers, modifying interface layer between two materials, encapsulation, and using hybrid materials for different layers. [ 36,43,44 ] While none of these brought the desired stability, these techniques improved the stability to some extent. The underlying physics of the degradation mechanisms needs to be studied more intuitively for bringing desired stability.…”

Performance Optimization of Inorganic Cs2TiBr6 Based Perovskite Solar Cell via Numerical Simulation

“…This enhancement in solar cell performance is caused by the fact that when doping charge density increases, the ETL material's internal electric field also increases, raising the charge transport velocity and, thus, the conductivity. [ 35 ] However, high doping leads to the creation of coulomb traps, reducing electron charge mobility. [ 24 ] In structure 1: we have optimized the N D of WS 2 as 10 18 cm −3 for the best PSC performance.…”