Zhao, Wenchao published the artcileMolecular Optimization Enables over 13% Efficiency in Organic Solar Cells, COA of Formula: C34H40F2S4, the publication is Journal of the American Chemical Society (2017), 139(21), 7148-7151, database is CAplus and MEDLINE.
A new polymer donor (PBDB-T-SF) and a new small mol. acceptor (IT-4F) for fullerene-free organic solar cells (OSCs) were designed and synthesized. The influences of fluorination on the absorption spectra, mol. energy levels, and charge mobilities of the donor and acceptor were systematically studied. The PBDB-T-SF:IT-4F-based OSC device showed a record high efficiency of 13.1%, and an efficiency of over 12% can be obtained with a thickness of 100-200 nm, suggesting the promise of fullerene-free OSCs in practical applications.
Journal of the American Chemical Society 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 C15H23BO2, COA of Formula: C34H40F2S4.
Referemce:
https://en.wikipedia.org/wiki/Benzothiophene,
Benzothiophene | C8H6S – PubChem