o-IDTBR, CAS number 2077945-91-4, is a small molecule acceptor which demonstrates an acceptor-acceptor–donor–acceptor-acceptor (A-A'–D–A'-A) structure. This consists of an electron-donating ladder-type fused five-member-ring indaceno[1,2-b:5,6-b′]dithiophene (IDT) core with aliphatic n-octyl side chains flanked by two electron withdrawing benzothiadiazole moieties and rhodanine terminated groups.

With a maximum absorption at around 600 – 730 nm and reduced charge recombination losses, o-IDTBR has been widely used as an n-type non-fullerene acceptor (NFA) in polymer organic photovoltaics. Among its useful properties, it shows promising stability under ambient conditions and exhibits outstanding photovoltaic performance.

Using PTB7-Th as the low band-gap donor polymer, mixed acceptors of o-IDTBR and o-IDFBR have demonstrated impressive device performance. An efficiency of 11.0 ± 0.4% and a high open-circuit voltage of 1.03 ± 0.01 has been reported.

Device structure: indium tin oxide (ITO)/ zinc oxide (ZnO)/PCE10:IDTBR:IDFBR (85 ± 5 nm) /molybdenum oxide (MoO3)/Ag [2]

o-IDTBR is available to buy online in quantities from 100 mg to 1 g (please contact us for larger orders). Larger quantities offer the best value, while smaller quantities may be more suitable for some applications. Eligible orders ship free.

General Information

Chemical Structure