Cho, Yongjoon published the artcileDithienogermole-Based Nonfullerene Acceptors: Roles of the Side-Chains′ Direction and Development of Green-Tinted Efficient Semitransparent Organic Solar Cells, Safety of 2-Bromo-3-(2-ethylhexyl)thiophene, the publication is ACS Applied Energy Materials (2020), 3(8), 7689-7698, database is CAplus.
Inspired by the encouraging properties of Ge-fused heterocyclic dithienogermole (DTG) in optoelectronic applications, we here report two narrow-bandgap acceptor-donor′-donor-donor′-acceptor (A-D′-D-D′-A)-type isomeric nonfullerene acceptors based on DTG (DTG-IW with inward-facing side chains vs DTG-OW with outward-facing side chains) for use in organic solar cells (OSCs). The introduction of the inward-facing side chains into the backbone results in extremely confined face-on crystallites in the solid state, as verified by grazing-incidence wide-angle X-ray scattering measurements. This result is attributed mainly to a better power conversion efficiency (PCE) of 9.16% in the OSC based on a blend of DTG-IW with a narrow-bandgap PTB7-Th donor polymer, as compared with the corresponding DTG-OW-based one. Furthermore, the appealing feature of the blend mixing of the narrow-bandgap donor and acceptor pair is that it enables the construction of a green-tinted efficient semitransparent OSC with a PCE of 6.19% and transmittance of 50.4% in the green wavelength region through incorporation of the recently formulated semitransparent Ag/Sb2O3/Ag electrode. Overall, in addition to providing useful perspectives into the side-chain engineering of nonfullerene acceptors, this work highlights that OSC based on the A-D′-D-D′-A-type DTG is a promising narrow-bandgap acceptor for further improvement of the performance of semitransparent OSCs.
ACS Applied Energy Materials published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Safety of 2-Bromo-3-(2-ethylhexyl)thiophene.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary