Effects of Heteroatom Substitution on the Photovoltaic Performance of Donor Materials in Organic Solar Cells

作     者：Hang Yang Chaohua Cui Yongfang Li 

作者机构：Laboratory of Advanced Optoelectronic MaterialsSuzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China 

出 版 物：《Accounts of Materials Research》 (材料研究述评（英文）)

年 卷 期：2021年第2卷第11期

页      面：986-997页

学科分类：07[理学] 070304[理学-物理化学(含∶化学物理)] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：We thank the National Natural Science Foundation of China(22022509,51873140,and 51820105003) Jiangsu Provincial Natural Science Foundation(BK20190095) Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD),and Collaborative Innovation Center of Suzhou Nano Science and Technology for financial support。 

主　　题：materials donor backbone 

摘      要：CONSPECTUS:Over the past few years,the innovation of narrow bandgap acceptor combined with wide bandgap donor materials significantly promotes the power conversion efficiencies(PCEs)of organic solar cells(OSCs)to exceed 18%.To build a state-of-the-art OSC,absorption spectra,frontier molecular orbital energy levels,molecular packing and crystallinity,and charge carrier mobilities of the photovoltaic materials should be considered in their molecular design.The donor and acceptor materials are the key components determining the photovoltaic performance of the OSCs.The side chain engineering on the conjugated backbone is a critical strategy to optimize the photovoltaic properties of the donor materials.In this Account,we focus on the topic of heteroatom substitution on the molecular backbone of the donor materials for improving their photovoltaic performance,aiming to provide in-depth understanding of the molecular structure optimization for the design of stateof-the-art photovoltaic materials.