Yagui, Javier published the artcileBenzodithiophene-based small molecules for vacuum-processed organic photovoltaic devices, Recommanded Product: 2-Bromo-3-(2-ethylhexyl)thiophene, the publication is Optical Materials (Amsterdam, Netherlands) (2020), 110354, database is CAplus.
Benzo[1,2-b:4,5-b’]dithiophene (BDT) derivatives were evaluated as donor materials for the first time in vacuum-processed organic photovoltaic (OPV) devices. Simple BDT derivatives coupled with thiophene, 3-methylthiophene, and 3-(2-ethylhexyl)thiophene, I [R = H, Me, CH2CH(Et)(CH2)3Me], were synthesized and characterized as part of this evaluation study. Similar frontier MOs were determined for the three mols. by DFT calculations, optical, and electrochem. measurements. Therefore, the effect of the alkyl substituents on the film morphol. and mol. order was possible to evaluate as well. All mols. exhibited thermal stability for their co-evaporation with C60 to form bulk heterojunction layers in OPV devices. An increase in short-circuit c.d. was observed for devices with compound I [R = Me]. Microscopy images and hole-transport measurements suggested an induced mol. order by the Me group of compound I [R = Me] on the active layer. Although low photoconversion efficiency values were obtained (∼1.2%), this work demonstrates the feasibility to fabricate fully vacuum-processed OPV devices with BDT derivatives as donor materials. Devices with higher photoconversion efficiencies were expected for BDT derivatives with enhanced optoelectronic properties.
Optical Materials (Amsterdam, Netherlands) 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 C24H20Ge, Recommanded Product: 2-Bromo-3-(2-ethylhexyl)thiophene.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary