具有溶致变色效应的钛氧簇作为高效有机太阳能电池的阴极界面层
Solvatochromic Ti-oxo clusters as cathode interlayer for efficient organic solar cells
摘要
Abstract
Three isostructural Ti6-oxo clusters with the formular of Ti6O4(PhPO3)2(L)2(OiPr)10,where L is 2-dimethylamine benzoate for Ti6-1,3-dimethylamine benzoate for Ti6-2,and 4-dimethylamine benzoate for Ti6-3,were successfully synthesized and characterized.Thereinto,Ti6-3 displayed novel solvent dependent light absorption property.When dissolved in trifluoroethanol related solvent,evident visible light absorption was observed for Ti6-3,which was quite different from its absorption limited within the ultraviolate region in isopropanol related solvent.However,Ti6-1 and Ti6-2 displayed consistent absorption behavior in both of these solvents,respectively.It is worth noting that the solvent dependent absorption property remains quite rare for Ti-oxo cluster materials to date,although this has been commonly observed for organic conjugated materials.Nuclear magnetic resonance measurements revealed that the surface isopropoxide ligands on Ti6-3 were replaced by analogus trifluoroethoxide ligands on the cluster surface,resulting in Ti6-3-F.The solvatochromic effect was further illustrated by density functional theory calculation revealing the tuned energy levels between Ti6-3 and Ti6-3-F.Finally,Ti6-3-F was demonstrated able to serve as excellent cathode interlayer(CIL)in PM6:BO-4Cl and PM6:L8-BO based organic solar cells(OSCs),which achieved high efficiencies of 17.89% and 18.09%,respectively,suggesting its excellence as new CIL materials for high performance OSCs.关键词
钛氧簇/敏化/前沿能级/阴极界面层/有机太阳能电池Key words
Ti-oxo cluster/Sensitization/Frontier energy level/Cathode interlayer/Organic solar cells分类
化学化工引用本文复制引用
赵朝委,黎霆,夏冬冬,谢谦,方洁,张月凤,谢宇,任广禹..具有溶致变色效应的钛氧簇作为高效有机太阳能电池的阴极界面层[J].物理化学学报,2026,42(10):151-162,12.基金项目
本研究由国家自然科学基金(22579072,52163018,22405107) （22579072,52163018,22405107）
江西省科技厅项目(20232BBE50026,jxsq2023102153,20232BAB213021,2024SSY05132,20252BAC200657,20252BAC200658) （20232BBE50026,jxsq2023102153,20232BAB213021,2024SSY05132,20252BAC200657,20252BAC200658）
江西省科学院项目(2023YYB07,2022YSBG22031,2022YJC2019,2022YJC2017,2023YSBG21017,2022YYB10,2022YRCS002,2023YJC1001,2023YSBG22025)联合资助.A.K.Y.J.感谢李兆基讲座教授(材料科学)席位的资助,以及香港城市大学APRC基金(9380086,9610419,9610440,9610492,9610508) （2023YYB07,2022YSBG22031,2022YJC2019,2022YJC2017,2023YSBG21017,2022YYB10,2022YRCS002,2023YJC1001,2023YSBG22025）
香港创新科技署MHKJFS基金(MHP/054/23) （MHP/054/23）
TCFS基金(GHP/121/22SZ)与MRP基金(MRP/040/21X) （GHP/121/22SZ）
香港环境局绿色科技基金(202020164) （202020164）
香港研资局GRF基金(11308625,11304424,11307621,11316422)及CRS基金(CRS_CityU104/23,CRS_HKUST203/23)的支持.香港城市大学项目"促进创新以增强韧性及实现可持续转型"(9610739)获联合国教科文组织"可持续发展科学十年"计划(2024–2033)官方认证,为本研究提供了部分资助. （11308625,11304424,11307621,11316422）
