吡啶胺驱动的配位与氢键界面钝化实现高效钙钛矿太阳能电池OA
Pyridylamine-driven Interfacial Passivation via Coordination and Hydrogen Bonding Enables Efficient Perovskite Solar Cells
钙钛矿太阳能电池(PSCs)因其优异的光电转换效率而备受关注,但未配位Pb2+离子与卤素空位等本征缺陷所诱发的非辐射复合与离子迁移,仍显著制约其长期运行稳定性与商业化进程.本研究提出3-氨基-2,6-二氯吡啶(ADCP)作为新型吡啶胺类添加剂,用于协同提升器件效率与稳定性.ADCP同时包含可与Pb2+配位的吡啶氮位点以及可与卤素阴离子形成氢键的氨基官能团,从而实现对缺陷的"双位点"化学钝化与晶格稳定.一方面,削弱Pb相关深能级陷阱并降低缺陷密度;另一方面,促进薄膜结晶质量提升与界面电荷传输/抽取优化.基于该策略构筑的器件获得25.59%的光电转换效率(PCE),并表现出显著增强的长期稳定性,在近500 h的测试周期内仍可保持初始PCE的81%.本工作表明,吡啶胺驱动的"配位-氢键"协同钝化为缓解PSCs稳定性瓶颈、构筑高效率且可持续运行的钙钛矿光伏器件提供了一条具有普适性的分子设计与界面调控路径.
Perovskite solar cells(PSCs)have garnered significant attention for their high efficiency,but their commer-cial application is hindered by stability issues caused by defects such as uncoordinated Pb2+ions and halide vacancies.This work introduces 3-amino-2,6-dichloropyridine(ADCP)as a novel pyridylamine additive for PSCs,aiming to en-hance both device efficiency and stability.ADCP features a pyridine functional group that coordinates with Pb2+ions and forms hydrogen bonds with halide ions,enabling dual-site passivation of defects.This dual interaction reduces Pb-related defects,improves crystallinity,and enhances charge transport within the perovskite layer.The devices exhibit a PCE of 25.59%,with significant improvements in long-term stability,maintaining 81%of the initial PCE for nearly 500 h.The study highlights the effectiveness of pyridylamine-driven passivation in overcoming stability issues and enhancing the over-all performance of PSCs,providing a promising strategy for high-efficiency,stable perovskite photovoltaics.
陈昕;胡利华;张左林;崔洪军;陈聪
河北高速公路集团卓能有限公司,河北 张家口 076150河北高速公路集团卓能有限公司,河北 张家口 076150河北工业大学 材料科学与工程学院,智能配用电装备与系统全国重点实验室,天津 300401河北工业大学 土木与交通学院,天津 300401河北工业大学 材料科学与工程学院,智能配用电装备与系统全国重点实验室,天津 300401||国防科技大学 新型陶瓷纤维及其复合材料国防科技重点实验室,湖南 长沙 410073||山东九思新材料科技有限公司,山东 济宁 273200
信息技术与安全科学
钙钛矿太阳能电池氢键吡啶胺
perovskite solar cellshydrogen bondingpyridylamine
《发光学报》 2026 (5)
854-863,10
河北高速公路集团有限公司科技创新项目(1906536076810387456)国家自然科学基金(52473257)山东省泰山产业创新领军人才项目(tscx202312156) Supported by the Hebei Expressway Group Zhuoneng Co.,Ltd.Technology Innovation Project(1906536076810387456)National Natural Science Foundation of China(52473257)The Taishan Industrial Experts Program(tscx202312156)
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