Luminosyn™ Polymers, Materials, OPV Polymers, Semiconducting Polymers
PBDB-T-2Cl (CAS number 2239295-71-5), also known as PM7, is part of the PBDB-T polymer family. It has a high OPV device performance, with reported efficiencies exceeding 12%. PSCs based on PBDB-T-2Cl as the donor and ITIC-2F as the acceptor have achieved a power conversion efficiency (PCE) of over 14% [2].
Compared to PBDB-T-2F, PBDB-T-2Cl showed slightly lower calculated HOMO levels. Although fluorine has greater electronegativity, it is believed that electron density can be delocalised more effectively to the chlorine atom than the fluorine atom on the BDT (benzodithiophene) backbone unit, resulting in a deeper HOMO energy level.
Record PCEs of 18.07% was achieved by using mixed PBDB-T-2Cl (PM7) and PBDB-T-2F (PM6) as the donors and mixed non-fullerene Y6 and fullerene PC71BM as the acceptors with the following structure.
Device structure: ITO/PEDOT:PSS/PM6:PM7:Y6:PC71BM/PFNDI-Br/Ag [2]
| Thickness (nm) | VOC (V) | JSC (mA cm-2) | FF (%) | PCE (%) |
|---|---|---|---|---|
| 120 | 0.859 | 26.55 | 79.23 | 18.07 |
Luminosyn™ PBDB-T-2Cl (also referred to as PCE14) is now available.
High purity
PBDB-T-2Cl is purified via Soxhlet extraction with acetone, hexane and chlorobenzene under an argon atmosphere
Large quantity orders
Plan your experiments with confidence with polymers from the same batch
| Full name | Poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-chloro)thiophen-2-yl)-benzo[1,2-b:4,5-b’]dithiophene))-alt-(5,5-(1’,3’-di-2-thienyl)-5’,7’-bis(2-ethylhexyl)benzo[1’,2’-c:4’,5’-c’]dithiophene-4,8-dione)] |
|---|---|
| Synonyms | PM7, PCE14, PBDB-T-Cl |
| Chemical formula | (C68H76Cl2O2S8)n |
| CAS number | 2239295-71-5 |
| HOMO / LUMO | HOMO = -5.52 eV, LUMO = -3.57 eV [1] |
| Solubility | Chloroform, chlorobenzene and dichlorobenzene |
| Classification / Family | Organic semiconducting materials, Medium bandgap polymers, Organic photovoltaics, Polymer solar cells, Perovskite solar cells, Hole-transport layer materials, NF-PSCs, All-polymer solar cells (all-PSCs). |
Chemical structure of PBDB-T-2Cl (PCE14)
The device structure of the certified device was:
ITO / ZnO (30 nm) / PBDB-T-2Cl:ITIC-2F (100 nm) / MoO3 (10 nm) / Al (100 nm)
PBDB-T:ITIC-2F solution details:
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