Efficient organic solar cells achieved at a low energy loss

作     者：Wenrui Liu Jianyun Zhang Shengjie Xu Xiaozhang Zhu 

作者机构：Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing 100190China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2019年第64卷第16期

页      面：1144-1147页

核心收录：

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）] 

基　　金：financially supported by the National Key R&D Program of China (2017YFA0204700) the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB12010200) the National Natural Science Foundation of China (21572234, 21661132006, 91833304, 21805289) 

主　　题：Efficient organic solar cells at a low energy loss Organic photovoltaics 

摘      要：Organic photovoltaics(OPVs)have attracted much attention because of the advantages in low-cost and large-area fabrication and the great potentials in achieving flexible and semi-transparent devices(1)However,compared with inorganic and perovskite solar cells[2],OPVs show relatively low photoelectric conversion efficiencies,which is admittedly attributed to intrinsically low dielectric constants of organic materials[3]resulting in large energy losses(Eloss=EgqVoc,where Eg is the optical bandgap of the photoactive layer,Voc is the open-circuit voltage of photovoltaic devices and q is elementary charge).