1422748-36-4

Basic information

• Product Name: 4,8-bis(5-(2-hexyldecyl)thienyl-2-)-benzodithiophene
• CAS NO: 1422748-36-4
• Molecular Weight: 803.402
• Mol File: 1422748-36-4.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 4,8-bis(5-(2-hexyldecyl)thienyl-2-)-benzodithiophene(CAS DataBase Reference)
• NIST Chemistry Reference: 4,8-bis(5-(2-hexyldecyl)thienyl-2-)-benzodithiophene(1422748-36-4)
• EPA Substance Registry System: 4,8-bis(5-(2-hexyldecyl)thienyl-2-)-benzodithiophene(1422748-36-4)

Safety Data

• Hazardous Substances Data: 1422748-36-4(Hazardous Substances Data)

Upstream product

• 32281-36-0 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione 
• 1215857-69-4 5-bromo-2-(2-hexyldecyl)thiophene 
• 1215857-68-3 2-(2-hexyldecyl)thiophene 
• 52997-43-0 7-(bromomethyl)pentadecane 

Downstream Products

• 1373834-87-7 2,6-bis(trimethyltin)-4,8-bis(5-(2-hexyldecyl)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene 

Relevant articles and documents

Side chain effect on poly(beznodithiophene-co-dithienobenzoquinoxaline) and their applications for polymer solar cells

Two conjugated polymers (PBDT86-TQ and PBDT88-TQ) with different side chains, but with the same polymer backbone, have been prepared for polymer solar cells. The side chains in the two polymers induced different steric hindrance. PBDT86-TQ showed the 0-0 absorption peak at ～740 nm, and it was blue-shifted to ～660 nm for PBDT88-TQ as a result of strong steric hindrance from two dioctyl chains. Further, the HOMO energy levels of PBDT86-TQ (-5.10 eV) and PBDT88-TQ (-5.54 eV) also showed a large difference. The hole mobility of PBDT88-TQ is ～70 times higher than that of PBDT86-TQ. The photovoltaic cells based on PBDT86-TQ gave a very low PCE of 0.69-0.80%, and for PBDT88-TQ-based cells, the PCEs were improved to 3.70-4.50% with a Voc of up to 0.98 V and improved Jsc and FF. These results show the importance of side chains on the design of conjugated polymers for high performance polymer solar cells.

Solution-processed and high-performance organic solar cells using small molecules with a benzodithiophene unit

Three small molecules named DR3TBDTT, DR3TBDTT-HD, and DR3TBD2T with a benzo[1,2-b:4,5-b′]dithiophene (BDT) unit as the central building block have been designed and synthesized for solution-processed bulk-heterojunction solar cells. Power conversion efficiencies (PCEs) of 8.12% (certified 7.61%) and 8.02% under AM 1.5G irradiation (100 mW cm-2) have been achieved for DR3TBDTT- and DR3TBDT2T-based organic photovoltaic devices (OPVs) with PC 71BM as the acceptor, respectively. The better PCEs were achieved by improving the short-circuit current density without sacrificing the high open-circuit voltage and fill factor through the strategy of incorporating the advantages of both conventional small molecules and polymers for OPVs.