Superiority of Strontium-Doped Barium Titanate as an Electron Transport for Perovskite Solar Cells for Enhanced Efficiency and Thermal Stability  

作　　者：Minhaz Mahmood Mohammad Tariqul Islam Md Samiul Islam Sakhr M.Sultan Kashfia Noor M.A.Islam K.Sopian Abdullah Alghafis Mohd Adib Ibrahim K.Sobayel 

机构地区：[1]Department of Electrical,Electronic and Systems Engineering,Universiti Kebangsaan Malaysia(UKM),43600Bangi,Malaysia [2]Solar Energy Research Institute(SERI),Universiti Kebangsaan Malaysia(UKM),43600Bangi,Malaysia [3]Department of Electrical Engineering,Faculty ofEngineering,Universiti Malaya,50603KualaLumpur,Malaysia [4]Department of Mechanical Engineering,Universiti Teknologi Petronas,32610Seri Iskandar,Malaysia [5]Department of Mechanical Engineering,College ofEngineering,Qassim University,Buraydah,SaudiArabia

出　　处：《Transactions of Tianjin University》2025年第1期42-63,共22页天津大学学报(英文版)

基　　金：funded by the Geran Universiti Penyelidikan(GUP),under the grant number GUP-2022-011 funded by the Universiti Kebangsaan Malaysia。

摘　　要：This study presents a detailed comparative analysis of three electron transport layer(ETL)materials for perovskite solar cells(PSCs),namely titanium dioxide(TiO_(2)),barium titanate(BaTiO_(3)or BTO),and strontium-doped barium titan-ate(Ba_(1−x)Sr_(x)TiO_(3)or BST),and their impact on the quantum efficiency(QE)and power conversion efficiency(PCE)of CH_(3)NH_(3)PbI_(3)(MAPbI_(3))PSCs.The optimized structure demonstrates that devices utilizing BST as an ETL achieved the highest PCE of 29.85%,exhibiting superior thermal stability with the lowest temperature coefficient of−0.43%/K.This temperature-induced degradation is comparable to that of commercially available silicon cells.Furthermore,BST-based ETLs show 29.50%and 26.48%higher PCE than those of TiO_(2)-based and BTO-based ETLs.The enhanced internal QE and favorable current density–voltage(J–V)characteristics of BST compared with those of TiO_(2)and BTO are attributed to its improved charge carrier separation,reduced recombination rates,and robust electrical characteristics under varied environmental conditions.Furthermore,the electric field and generation rate of the BST-based ETLs show a more favorable distribution than those of the TiO_(2)-based and BTO-based ETLs.These findings provide significant insights into the role of different ETLs in enhancing QE,indicating that BST is a superior ETL that enhances both the efficiency and stability of PSCs.This study contributes to the understanding of how perovskite-structured ETLs can be used to design and optimize highly efficient and stable photovoltaic devices.

关 键 词：Perovskite solar cell Electron transport layer Light management Quantum efficiency SCAPS-1D Lumerical FDTD Barium titanate 

分 类 号：TQ132.35[化学工程—无机化工] TM914.4[电气工程—电力电子与电力传动]