1049034-65-2

Upstream product

• 23703-22-2 1-bromo-4-n-hexylbenzene 
• 18014-00-1 dimethyl 2,5-dibromoterephthalate 
• 13731-82-3 2,5-dibromoterephtalic acid 
• 915224-39-4 diethyl 1,4-bis(thiophen-2-yl)-2,5-benzenedicarboxylate 

Downstream Products

• 1049034-67-4 4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b’]dithiophene 
• 1049034-71-0 2,7-dibromo-4,4,9,9-tetrakis-(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b′]dithiophene 

Relevant academic research and scientific papers

High-mobility low-bandgap conjugated copolymers based on indacenodithiophene and thiadiazolo[3,4-c]pyridine units for thin film transistor and photovoltaic applications

Two new semiconducting polymers based on indacenodithiophene and thiadiazolo[3,4-c]pyridine units were synthesized via Stille coupling polymerization. The polymers, PIDTPyT and PIDTDTPyT, exhibited main absorption bands in the range of 550-800 nm while their absorption maxima were located at around 700 nm in films. With two additional thiophene spacers, PIDTDTPyT showed a broader absorption band but a 20 nm blue-shifted maximum peak compared to that of PIDTPyT. Both of the polymers possess low bandgaps (～1.6 eV) and deep energy levels for both the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO). Organic field-effect transistors (OFETs) device measurements indicate that PIDTPyT and PIDTDTPyT have high hole carrier mobilities of 0.066 and 0.045 cm2 V-1 s -1, respectively, with the on/off ratio on the order of 10 6. Bulk heterojunction photovoltaic devices consisting of the copolymers and PC71BM gave power conversion efficiencies (PCE) as high as 3.91% with broadband photo-response in the range of 300-800 nm. The relationships between the photovoltaic performance and film morphology, energy levels, hole mobilities are discussed.

Non-fullerene electron acceptor material and organic photovoltaic cell

The invention provides a non-fullerene electron acceptor material represented by formula (I), and an organic photovoltaic cell having an active layer comprising the non-fullerene electron acceptor material. When the non-fullerene electron acceptor materia

Non-fullerene electron acceptor material and organic photovoltaic cell

Disclosed are a non-fullerene electron acceptor material represented by formula (I) and an organic photovoltaic cell having an active layer comprising the aforementioned non-fullerene electron acceptor material. When the non-fullerene electron acceptor ma