Efficiency Enhancement of Inverted Polymer Solar Cells Using Ionic Liquid-functionalized Carbon Nanoparticles-modified ZnO as Electron Selective Layer

作     者：Feng Zhu Xiaohong Chen Zhe Lu Jiaxiang Yang Sumei Huang Zhuo Sun 

作者机构：Engineering Research Center for Nanophotonics and Advanced InstrumentMinistry of Educationand Department of PhysicsEast China Normal University Department of ChemistryAnhui University 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2014年第6卷第1期

页      面：24-29页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by National Natural Science Foundation of China (grant Nos.61275038,11274119) Natural Science Foundation of Shanghai Science and Technology Commission (grant No.11ZR1411300) Pujiang Talent Program of Shanghai Science and Technology Commission (grant No.11PJ1402700) Doctoral Fund of Ministry of Education of China (grant No.20110076120017) SRF for ROCS,SEM 

主　　题：Polymer Solar cell ZnO 

摘      要：ZnO thin film was fabricated on tin-doped indium oxide electrode as an electron selective layer of inverted polymer solar cells using magnetron sputtering deposition. Ionic liquid-functionalized carbon nanoparticles(ILCNs) film was further deposited onto ZnO surfaces by drop-casting ILCNs solution to improve interface properties. The power conversion efficiency(PCE) of inverted polymer solar cells(PSCs)with only ZnO layer was quickly decreased from 2.7% to 2.2% when the thickness of ZnO layer was increased from 15 nm to 60 nm. However, the average PCE of inverted PSCs with ZnO layer modified with ILCNs only decreased from 3.5% to 3.4%, which is comparable to that of traditional PSCs with poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) anode buffer layer. The results suggested that the contact barrier between ZnO layer and poly(3-hexylthiophene) and phenyl-C61-butyric acid methylester(P3HT:PCBM)blended film compared to ZnO bulk resistance can more significantly influence the performance of inverted PSCs with sputtered ZnO layer. The vanishment of negative capacitive behavior of inverted PSCs with ILCNs modified ZnO layer indicated ILCNs can greatly decrease the contact barrier of ZnO/P3HT:PCBM interface.