MoO_(3)/GO双层空穴萃取层提高有机太阳能电池性能研究  

MoO_(3)/GO Hybrid Hole Extraction Layer Enabling High Efficiency in Organic Solar Cells

作　　者：董鹏 王忠强[1] 赵敏[1] 郭健 王晓亮 郝玉英[1] 王华[1] DONG Peng;WANG Zhongqiang;ZHAO Min;GUO Jian;WANG Xiaoliang;HAO Yuying;WANG Hua(Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China)

机构地区：[1]太原理工大学新材料界面科学与工程教育部重点实验室,太原030024

出　　处：《太原理工大学学报》2022年第1期14-20,共7页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(61704118);天津理工大学“显示材料与光电器件”教育部重点实验室开放基金。

摘　　要：有机太阳能电池中空穴萃取层对于光生载流子的提取和收集有着十分重要的影响。利用前驱体溶液法制备的MoO_(3)(Solution processed MoO_(3),S-MoO_(3))薄膜与氧化石墨烯(graphene oxide,GO)制备了双层空穴萃取层,并且在非富勒烯体系(PM6:Y6)和富勒烯体系(PTB7-Th:PC_(71)BM)太阳能电池中证明了该双层结构空穴萃取层优异的电荷提取能力。研究表明,GO层引入S-MoO_(3)和光吸收层之间有助于提高S-MoO_(3)空穴萃取层与光吸收层之间的接触质量,促进电池内部激子解离,提升电荷萃取效率。另一方面,双层空穴萃取层还有助于抑制S-MoO_(3)空穴萃取层在界面处对光吸收层产生的激子淬灭效应,最终显著提升有机太阳能电池的光电转换效率(与参比器件相比提升34.5%)。The photovoltaic performance of organic solar cells(OSCs)are strongly influenced by the functionality of hole extraction layers.In this work,a bilayer structure hole extraction layer(HEL)of S-MoO_(3)/GO was formed by solution processed MoO_(3)(S-MoO_(3))and graphene oxide(GO).The application of hybrid HEL helped polish the interfacial contact between HEL and active layers,resulting in an increased exciton dissociation,diminished charge recombination losses,and more efficient charge extraction probability,and thereby achieving improved photovoltaic performance.The excellent charge extraction capability was proved in nonfullerene PM6:Y6 and fullerene PTB7-Th:PC_(71)BM blend system based cells.A champion efficiency of 13.56%was observed in PM6:Y6 based cell with S-MoO_(3)/GO HEL,which was>34%higher than the efficiency of 10.08%in the control cell with pristine S-MoO_(3) HEL.

关 键 词：复合空穴萃取层 氧化石墨烯 界面工程 高效率 有机太阳电池 

分 类 号：TB3[一般工业技术—材料科学与工程]