物理化学学报2018，Vol.34Issue(4)：391-406,16.DOI:10.3866/PKU.WHXB201709131
基于苝二酰亚胺类非富勒烯受体共混体系凝聚态结构调控
Morphology Control of Non-fullerene Blend Systems Based on Perylene Diimide Acceptors
摘要
Abstract
In recent years,the development of perylene diimide derivative (PDI)-based non-fullerene organic solar cells has been extensively studied.These solar cells exhibit unique advantages such as complementary light absorption,tunable energy levels,excellent electron transport properties,and relatively low cost.However,the strong π-π stacking between the PDI molecules tends to induce an uncontrolled phase separation structure,large domain size,and an unmanageable mixed phase,leading to severe geminate and non-geminate recombination and restriction of the final power conversion efficiency of the non-fullerene-based systems.In this work,it was found that one of the most important parameters that helps regulate phase structure is the molecular diffusion rate.By tuning the thermal annealing and liquidsolid phase separation and blend ratio,the phase-separated structure could be adjusted.Further,the domain size of blend systems with different compatibilities was regulated by balancing the π-π and charge transfer interactions.In addition,the amount of the intermixed phase was controlled by tuning the solubility parameter difference (△δ) between the solvent and the solute.关键词
太阳能电池/非富勒烯/形貌调控/相分离结构/相区尺寸/共混相Key words
Solar cells/Nonfullerene/Morphology control/Phase separation/Domain size/Intermixed phase分类
化学化工引用本文复制引用
韩杰,梁秋菊,曲轶,刘剑刚,韩艳春..基于苝二酰亚胺类非富勒烯受体共混体系凝聚态结构调控[J].物理化学学报,2018,34(4):391-406,16.基金项目
The project was supported by the National Natural Science Foundation of China (51573185,21334006,21474113) and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB12020300).国家自然科学基金(51573185,21334006,21474113)和中国科学院战略性先导科技专项(B类)(XDB12020300)资助项目 （51573185,21334006,21474113）
