PffBT4T-2OD

Description

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PffBT4T-2OD, also known as PCE11, is a p-type material for organic photovoltaic applications (OPV). This polymer shows high efficiency (PCE = 10.8%) with a wide variety of fullerene-based electron acceptors.

PCE11 is a medium bandgap polymer used in organic solar cells to attain high efficiencies. A PCE over 10.5% was reached when used with fullerene acceptors [1]. This material performs very well in thick films of 300 nm. Over 10% PCE can be attained when processed from non-chlorinated solvents with an active layer over 350 nm.[2] Recent studies demonstrated this material can perform well when used with non-fullerene acceptors, reaching a PCE of 9.5% with a high Voc of 1.08V.[3-4] Devices with the non-fullerene acceptor EH-IDTBR were more stable than those made using PC71BM.
This material is soluble in aromatic solvents (xylene, chlorobenzene, dichlorobenzene, etc.), but requires high temperatures (>90oC) and must be cast when heated. It has temperature-dependant aggregation properties [1], and it precipitates in these solvents (pure) at room temperature.

Reference
[1] Qin, P.-L.; Yang, G.; Ren, Z.-W.; Cheung, S. H.; So, S. K.; Chen, L.; Hao, J.; Hou, J.; Li, G. Nat. Commun. 2014, 5, 5293.

Technical specs

CATALOG NAME
PffBT4T-2OD
NAME
Poly[(5,6-difluoro-2,1,3-benzothiadiazole-4,7-diyl)[3,3'''-bis(2-octyldodecyl)[2,2':5',2'':5'',2'''-quaterthiophene]-5,5'''-diyl]]
Synonym
PCE11
CAS NUMBER
1644164-62-4
FORMULA
(C62H88F2N2S5)n
MW
≥ 70 kg/mol
HOMO
-5.34 eV
LUMO
-3.69 eV