Multi-site Passivation of ZnO Metal Oxides via Biomolecules for Efficient and Highly Stable Organic Solar Cells  

作　　者：Irfan Ismail Maria Khalil Xiaomei Gao Xingze Chen Muhammad Jawad Rong Huang Zhiyun Li Emmanuel Acheampong Tsiwah Wei-shi Li Qun Luo Chang-Qi Ma 

机构地区：[1]i-Lab&Printable Electronics Research Center,Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO),Chinese Academy of Sciences(CAS),Suzhou,Jiangsu,215123 China [2]University of Chinese Academy of Sciences(UCAS),Beijing,100040 China [3]School of Nano-Tech and Nano-Bionics,University of Science and Technology of China(USTC),Hefei,Anhui,230027 China [4]Shanghai Institute of Organic Chemistry(SIOC),Chinese Academy of Sciences(CAS),Shanghai,200032 China [5]Vacuum Interconnected Nanotech Workstation(Nano-X),Suzhou,Jiangsu,215123 China

出　　处：《Chinese Journal of Chemistry》2024年第14期1582-1592,共11页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(22135001);Young Cross Team Project of CAS(No.JCTD-2021-14);Suzhou Science and Technology Program(ST202219);"Dual Carbon"Science and Technology Innovation of Jiangsu Province(Industrial Prospect and Key Technology Research Program)(BE2022021);Vacuum Interconnected Nanotech Workstation,and Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences(CAS).

摘　　要：ZnO nanoparticles(nps)among metal oxide(MOs)are proven to be essential electron transporting layers(ETLs)applied in organic solar cells(OSCs).However,intrinsic defects,interfacial charge recombination,and catalytic behavior towards the active layer restrict the applications of ZnO nps for efficient and long-term stable OSCs.The commonly available biomolecule cytidine 5'-monophosphate(CMP-OH)with phosphonic acid,its salt cytidine 5'-monophosphate disodium salt(CMP-ONa)with a phosphate group as an anchoring group and conjugated terminal functional in both analogous molecules provide carrier transfer bridge at bottom interface of the active layer.Systematized theoretical investigations and characterizations have discovered the multi-site coordination of CMP-OH towards acceptor molecules and ZnO nps.The dual-side alignment of CMP analogous molecules hinders interfacial charge recombination and enhances charge transfer potential at once.Inevitably,PM6:L8-BO-based OSCs with modified ETL obtain 18.13%efficiency,12%higher than that of unmodified nps.Besides higher efficiency,CMP-OH-based OSC devices illustrate remarkably improved thermal stability for 500 h at 85℃with 72%of initial PCE and operation stability for 2000 h with 90.1%of initial PCE.This work reveals the passivation mechanism of multi-anchoring groups towards MOs and single-functional groups towards the active layer to optimize the interface for efficient and highly stable OSCs.

关 键 词：Organic solar cells NANOPARTICLES NUCLEOTIDES Interfacial interactions Surface chemistry Multi-site passivation 

分 类 号：TQ134.32[化学工程—无机化工] TM914.4[电气工程—电力电子与电力传动]