高等学校化学学报2023，Vol.44Issue(9)：1-12,12.DOI:10.7503/cjcu20230092
苝酰亚胺受体的聚集形态对有机太阳电池中激子过程与电子传输的影响
Aggregation Morphology of Perylene Bisimide Acceptors and the Role on Exciton Processes and Electron Transport in Organic Solar Cells
摘要
Abstract
Head-to-tail bonded perylene bisimide(PBI)dyads with different branched alkyl chains substituted at the terminal imide position show various stacking modes,which results in different effects on the excitonic processes and electron transportation.The dyad bearing branched alkyl chains with the branching sites close to the imide positions forms homogeneously amorphous state,while with branching sites being away from the imide positions the PBI core tend to stack with multiple modes.There are fewer energy trapping sites in the homogeneously amorphous state,but in the multiple stacking system the strong π-π interactions give more trapping sites.Our study demonstrates that the aggregation state of PBI-based acceptors plays an important role in the performances of organic solar cells(OSCs).Multiple stacking needs to be diminished to avoid the constrained exciton dissociation and retarded charge transport in the active layer.关键词
苝酰亚胺/无定形态/多种堆积共存/有机太阳电池Key words
Perylene bisimide/Amorphous state/Coexistence of multiple stacking/Organic solar cell分类
化学化工引用本文复制引用
张煜,陈介焕,周家东,刘琳琳,解增旗..苝酰亚胺受体的聚集形态对有机太阳电池中激子过程与电子传输的影响[J].高等学校化学学报,2023,44(9):1-12,12.基金项目
国家自然科学基金(批准号:21975076,52003089,52103206)、广东省分子聚集发光重点实验室(批准号:2019B030301003)和广州市科技计划项目(批准号:202102020561,202102020401)资助.Supported by the National Natural Science Foundation of China(Nos.21975076,52003089,52103206),the Key Laboratory of Luminescence from Molecular Aggregates of Guangdong Province,China(No.2019B030301003)and the Science and Technology Projects in Guangzhou,China(Nos.202102020561,202102020401). （批准号:21975076,52003089,52103206）
