Surfactant-Encapsulated Polyoxometalate Complex as a Cathode Interlayer for Nonfullerene Polymer Solar Cells  

作　　者：Jing Qiu Yue Zhang Yan Liu Huiru Liu Dongdong Xia Fan Yang Chaowei Zhao Weiwei Li Lixin Wu Fenghong Li 

机构地区：[1]State Key Laboratory of Supramolecular Structure and Materials,Jilin University,Changchun 130012 [2]Institute of Applied Chemistry,Jiangxi Academy of Sciences,Nanchang 330096 [3]Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190 [4]College of Chemistry,Chemical Engineering and Materials Science,Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong,Key Laboratory of Molecular and Nano Probes,Ministry of Education,Shandong Normal University,Jinan 250014 [5]State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029

出　　处：《CCS Chemistry》2022年第3期975-986,共12页中国化学会会刊（英文）

基　　金：supported by grants from the National Basic Research Program of China(no.2014CB643505);the Natural Science Foundation of Jilin Province,China(no.20170101169JC);the Open Project of the State Key Laboratory of Supramolecular Structure and Materials(no.sklssm202043);the Graduate Innovation Fund of Jilin University(no.101832020CX339);W.L.and C.Z.acknowledge the support from the Jiangxi Provincial Department of Science and Technology(nos.20192ACB20009 and 20192BBEL50026).

摘　　要：An alcohol-soluble,environmentally friendly,and low-cost surfactant-encapsulated polyoxometalate complex[(C8H17)4N]4[SiW_(12)O40](TOASiW_(12))as a cathode interlayer(CIL)has exhibited excellent universality for various active layers and cathodes in nonfullerene polymer solar cells(NF-PSCs).In particular,incorporating TOASiW_(12) as the CIL enhanced power conversion efficiencies(PCEs)of the PM6:Y6-based NF-PSCs with Al or Ag cathode to 16.14%and 15.89%,respectively,and the PCEs of PM6:BTP-BO4Cl-based NF-PSCs with Al or Ag cathode to 17.04%and 17.00%,respectively.More importantly,the performances of the devices with TOASiW_(12) were insensitive to the TOASiW_(12) thickness from 3 to 33 nm.Furthermore,the NF-PSCs with TOASiW_(12) exhibited better device stability.Combined characterization of the photocurrent density versus effective voltage,capacitance versus voltage and electron mobility demonstrated that TOASiW_(12) as the CIL effectively promoted exciton dissociation,charge-carrier extraction,built-in potential,charge-carrier density,and electron mobility in the NF-PSCs.These findings suggest that TOASiW_(12) is a promising,competitive CIL for NF-PSCs fabricated by roll-to-roll processing.

关 键 词：surfactant-encapsulated polyoxometalate complex nonfullerene polymer solar cells cathode interlayer device stability thickness-insensitive low-cost 

分 类 号：TM914.4[电气工程—电力电子与电力传动]