发光学报2025，Vol.46Issue(11)：2055-2062,8.DOI:10.37188/CJL.20250142
真空热蒸发LiF钝化策略制备高效稳定的钙钛矿太阳能电池
Fabrication of Highly Efficient and Stable Perovskite Solar Cells by Vacuum Thermal Evaporation of LiF Passivating Interface
摘要
Abstract
Perovskite solar cells(PSCs)demonstrate outstanding photoelectric conversion efficiency(PCE),yet their performance remains constrained by surface defects at the perovskite/electron transport layer(ETL)interface,which significantly impede electron transport.This study innovatively introduces a LiF interlayer between perovskite and ETL through vacuum thermal evaporation.The research reveals that F-in LiF chemically interacts with uncoordi-nated Pb2+defects on the perovskite surface,forming stable Pb-F bonds that effectively passivate surface defects.This strategy enhances the film's surface morphology and substantially improves interfacial electron transport efficien-cy.Experimental results show that LiF-passivated PSCs achieve a PCE increase from 21.21％to 22.33％,accompa-nied by significantly reduced hysteresis index(HI).During accelerated aging tests at 60℃,LiF-modified devices exhibit exceptional stability,retaining 85％of their initial efficiency after 820 h of aging.This simple,reliable,and scalable interfacial engineering strategy provides new insights for developing high-efficiency and stable PSCs.关键词
钙钛矿太阳能电池/真空热蒸镀/界面缺陷钝化Key words
perovskite solar cells/vacuum thermal evaporation/interfacial defect passivation分类
信息技术与安全科学引用本文复制引用
汪海俊,王进,吕俊,毕伟辉,杨伯川,王騊,钟宇飞..真空热蒸发LiF钝化策略制备高效稳定的钙钛矿太阳能电池[J].发光学报,2025,46(11):2055-2062,8.基金项目
宁波市自然科学基金(2022J149) （2022J149）
浙江省自然科学基金(LY22E020010,LTGS24B030002) （LY22E020010,LTGS24B030002）
宁波市科技计划项目(2022-DST-004,2022A-230-G,2024Z242) （2022-DST-004,2022A-230-G,2024Z242）
浙大宁波理工学院人才引进项目(1149957G20240033)Supported by Natural Science Foundation of Ningbo(2022J149) （1149957G20240033）
Natural Science Foundation of Zhejiang Province(LY22E020010,LTGS24B030002) （LY22E020010,LTGS24B030002）
Ningbo Science and Technology Project(2022-DST-004,2022A-230-G,2024Z242) （2022-DST-004,2022A-230-G,2024Z242）
Talent Introduction Project of Ningbo Tech University(1149957G20240033) （1149957G20240033）
