云南师范大学学报（自然科学版）2026，Vol.46Issue(2)：31-37,7.DOI:10.7699/j.ynnu.ns-2026-07
钙钛矿太阳能电池二氧化锡电子传输层的改性策略综述
A Review on Modification Strategies for SnO2 Electron Transport Layers in Perovskite Solar Cells
摘要
Abstract
Perovskite solar cells(PSCs)have emerged as a prominent research hotspot in the photovol-taic field due to their high extinction coefficient and carrier mobility.Tin dioxide(SnO2)is regarded as a highly promising electron transport layer(ETL)material owing to its high electron mobility,excel-lent light transmittance,and suitable energy level alignment.However,the presence of surface defects in SnO2 films severely restricts the further enhancement of device efficiency and long-term stability.This review systematically summarizes three core categories of defects in SnO2 ETLs and their corre-sponding modification strategies.Regarding particle agglomeration and surface roughness,the mecha-nisms of suppressing particle aggregation and reducing roughness through small molecules/polymers(e.g.,TFE,DLAM,PAM)via coordination bonding,electrostatic repulsion,and steric hindrance effects are elucidated.For the removal of residual surface hydroxyls(—OH),strategies such as halogen ion(F-,Cl-)exchange and neutralization reactions to form stable Sn-X bonds and eliminate deep-level traps are discussed.To address oxygen vacancies and dangling bonds,methods including surface coordination passivation(e.g.,L-carnitine,NH4 PF6),overlayer coating(e.g.,TiO2),and heterovalent metal ion(e.g.,Ni,Y)doping are summarized.Furthermore,the physicochemical mechanisms of these modifications and their impacts on power conversion efficiency(PCE)are comprehensively compared.Finally,future research directions are proposed,highlighting that in-depth analysis of passivation mechanisms,development of multifunctional passivation molecules,and resolution of process compati-bility for large-area fabrication are crucial for the industrialization of SnO2-based PSCs.关键词
钙钛矿太阳能电池/二氧化锡电子传输层/界面钝化/器件性能Key words
Perovskite solar cells/Tin dioxide electron transport layer/Interface passivation/Device per-formance分类
信息技术与安全科学引用本文复制引用
柴聚川,杨驰,张龙贤,王兴良,宋乔刚,王书荣..钙钛矿太阳能电池二氧化锡电子传输层的改性策略综述[J].云南师范大学学报（自然科学版）,2026,46(2):31-37,7.基金项目
国家自然科学基金资助项目(22309163) （22309163）
云南省基础研究计划资助项目(202401CF070035). （202401CF070035）
