Toward Fast Screening of Organic Solar Cell Blends

Advanced Science

Tamar Segal‐Peretz¹  Adam J. Moulé²  Xiaolei Chu²  Artem Levitsky³  Oded Nahor³  Gitti L. Frey³  Giovanni Maria Matrone⁴  Lee J. Richter⁵  Ilaria Bargigia⁶  Aditi Khirbat⁷  Carlos Silva⁷  Natalie Stingelin⁷ 

[1] Department of Chemical Engineering Technion—Israel Institute of Technology Haifa 3200003 Israel;Department of Chemical Engineering University of California Davis CA 95616 USA;Department of Material Science and Engineering Technion—Israel Institute of Technology Haifa 3200003 Israel;Department of Materials and Centre of Plastic Electronics Imperial College London London SW7 2AZ UK;Materials Science and Engineering Division National Institute of Standards and Technology Gaithersburg MD 20899 USA;School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA;School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332 USA;

关键词: bulk heterojunctions;    morphology;    organic electronics;    photovoltaic devices;    screening;   

DOI  :  10.1002/advs.202000960

来源: DOAJ

【 摘 要 】

Abstract The ever increasing library of materials systems developed for organic solar‐cells, including highly promising non‐fullerene acceptors and new, high‐efficiency donor polymers, demands the development of methodologies that i) allow fast screening of a large number of donor:acceptor combinations prior to device fabrication and ii) permit rapid elucidation of how processing affects the final morphology/microstructure of the device active layers. Efficient, fast screening will ensure that important materials combinations are not missed; it will accelerate the technological development of this alternative solar‐cell platform toward larger‐area production; and it will permit understanding of the structural changes that may occur in the active layer over time. Using the relatively high‐efficiency poly[(5,6‐difluoro‐2,1,3‐benzothiadiazol‐4,7‐diyl)‐alt‐(3,3′′′‐di(2‐octyldodecyl)‐2,2′;5′,2′′;5′′,2′′′‐quaterthiophen‐5,5′′′‐diyl)] (PCE11):phenyl‐C61‐butyric acid‐methyl‐ester acceptor (PCBM) blend systems, it is demonstrated that by means of straight‐forward thermal analysis, vapor‐phase‐infiltration imaging, and transient‐absorption spectroscopy, various blend compositions and processing methodologies can be rapidly screened, information on promising combinations can be obtained, reliability issues with respect to reproducibility of thin‐film formation can be identified, and insights into how processing aids, such as nucleating agents, affect structure formation, can be gained.

【 授权许可】

Unknown