Zhang, Shaoqing published the artcileOver 14% Efficiency in Polymer Solar Cells Enabled by a Chlorinated Polymer Donor, SDS of cas: 1514905-24-8, the publication is Advanced Materials (Weinheim, Germany) (2018), 30(20), n/a, database is CAplus and MEDLINE.
Fluorine-contained polymers, which were widely used in highly efficient polymer solar cells (PSCs), are rather costly due to their complicated synthesis and low yields in the preparation of components. Here, the feasibility of replacing the critical fluorine substituents in high-performance photovoltaic polymer donors with chlorine is demonstrated, and two polymeric donors, PBDB-T-2F and PBDB-T-2Cl, are synthesized and compared in parallel. The synthesis of PBDB-T-2Cl is much simpler than that of PBDB-T-2F. The two polymers have similar optoelectronic and morphol. properties, except the chlorinated polymer possess lower mol. energy levels than the fluorinated one. As a result, the PBDB-T-2Cl-based PSCs exhibit higher open circuit voltage (Voc) than the PBDB-T-2F-based devices, leading to an outstanding power conversion efficiency of over 14%. This work establishes a more economical design paradigm of replacing fluorine with chlorine for preparing highly efficient polymer donors.
Advanced Materials (Weinheim, Germany) published new progress about 1514905-24-8. 1514905-24-8 belongs to benzothiophene, auxiliary class Organic Photo-Voltaic Materials, OPV,BDT Donors, name is 4,8-Bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene, and the molecular formula is C10H14N2O, SDS of cas: 1514905-24-8.
Referemce:
https://en.wikipedia.org/wiki/Benzothiophene,
Benzothiophene | C8H6S – PubChem