High-Efficiency Electron Transport Layer-Free Perovskite/GeTe Tandem Solar Cell: Numerical Simulation

Abstract

The primary purpose of recent research has been to achieve a higher power conversion efficiency (PCE) with stable characteristics, either through experimental studies or through modeling and simulation. In this study, a theoretical analysis of an efficient perovskite solar cell (PSC) with cuprous oxide (Cu2O) as the hole transport material (HTM) and zinc oxysulfide (ZnOS) as the electron transport material (ETM) was proposed to replace the traditional HTMs or ETMs. In addition, the impact of doping the perovskite layer was investigated. The results show that the heterostructure of n-p PSC without an electron transport layer (ETL) could replace the traditional n-i-p structure with better performance metrics and more stability due to reducing the number of layers and interfaces. The impact of HTM doping and thickness was investigated. In addition, the influence of the energy gap of the absorber layer was studied. Furthermore, the proposed PSC without ETL was used as a top sub-cell with germanium-telluride (GeTe) as a bottom sub-cell to produce an efficient tandem cell and boost the PCE. An ETL-free PSC/GeTe tandem cell is proposed for the first time to provide an efficient and stable tandem solar cell with a PCE of 45.99%. Finally, a comparison between the performance metrics of the proposed tandem solar cell and those of other recent studies is provided. All the simulations performed in this study are accomplished by using SCAPS-1D.

Performance optimization of CsPbIBr2-based perovskite solar cells through device modeling

“…Using the SCAPS-1D simulation software, CsPbIBr 2 -based devices with a regular (n-i-p) structure of Glass/FTO/ZnOS/CsPbIBr 2 /CZTS/Au were simulated, as presented in figure 1. The device parameters obtained from the literature [17][18][19][20][21] are succinctly presented in table 1. A transparent interface is achieved at the lower end through the application of a fluorine-doped tin oxide (FTO) coated glass substrate, whereas the electron transport layers (ETLs) facilitate electron transport by impeding the passage of holes.…”

Investigation of Polymer/Si Thin Film Tandem Solar Cell Using TCAD Numerical Simulation

“…Various software packages can be utilized to assess the performance of single or multijunction solar cells, like SCAPS [40,41], Silvaco [6,12,42], COMSOL [43], AMPS [44], and wxAMPS [45]. This study uses the Silvaco TCAD simulator to model and simulate the proposed tandem cell's electrical and optical characteristics.…”

Solcore simulation of a GaInP/InGaAs/Ge solar cell

“…Lin et al [7] also researched all-perovskite tandem cells and proposed, to increase their efficiency, the use of better passivation of the grain surface for the mixed Pb-Sn perovskite subcell. Salah et al [8] simulated, with SCAPS-1D software, a tandem cell, based on perovskite (Cu 2 O/MAPbI 3-x Cl x ) and GeTe, without an electron-transport layer, achieving a very high value of the power conversion efficiency, of 45.99%.…”