Water-Induced Synthesis of Molybdenum Oxide for Solution-Processed Hole Transport Layer in Polymer Solar cells
作者单位：Beijing Advanced Innovation Center for Soft Matter Science and EngineeringState Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical Technology
会议名称：《第七届新型太阳能电池材料科学与技术学术研讨会》
会议日期：2020年
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
关 键 词：polymer solar cell molybdenum oxide hole transport layer
摘 要：MoO as a potential hole transport layer(HTL) in polymer solar cells is usually deposited on the active layer by thermal evaporation in inverted devices,while solution processed MoO(s-MoO) is used in conventional device,the thicknesses in both conditions are limited around 10 nm,which is definitely not suitable for large area module. In this study,we introduce very little amount of water during the synthesis of molybdenum oxide,and the color of precursor solution changes to dark blue after a few hours *** fabricate devices with configuration of ITO/s-MoO/PBDB-T:ITIC/Ca/Al,s-MoO is deposited by spinning coating of the precursor solution and annealing at 150℃ for 15 min in *** concentration of precursor solution is around 20 mg/mL,which indicate the s-MoO is much thicker than most reported *** device demonstrates a power conversion efficiency(PCE) of 8.33 % when the amount of water is 0.3% in precursor solution,which is comparable with PEDOT:PSS as *** the annealing procedure is completed in glove fulfill with nitrogen,the precursor solution should be diluted to around 2 mg/mL before use,100 ℃ for 30 min is enough for a PCE of 7.98 %.