|Molecular weight||See Batch Details table above|
|HOMO / LUMO||HOMO = - 5.3 eV, LUMO = - 3.6 eV |
|Solubility||Chloroform, chlorobenzene, dichlorobenzene|
|Classification / Family||Cyclopenta dithiophene, Hole-transport layer materials, Organic semiconducting materials, Low band-gap polymers, Organic photovoltaics, All-polymer solar cells, OFETs, Perovskite solar cells.|
PCPDTBT, copolymer of cyclopenta dithiophene and benzothiadiazole, is a low band-gap polymer semiconductor that is widely used for high-performance OPV devices with excellent charge-carrier properties.
Like PSBTBT, PCPDTBT has an ideal bandgap value (1.5 eV). This not only covers a broad range in the visible light spectrum, but also extends its spectral absorption into the infrared region.
In most cases, PCPDTBT is considered to be amorphous due to its non-linear side-chain structures. However, highly-crystalline films of PCPDTBT with branched side-chains can also be achieved by solvent vapour crystallisation .
Literature and Reviews
- Novel Ternary Blend of PCDTBT, PCPDTBT and PC70BM for the Fabrication of Bulk Heterojunction Organic Solar Cells, T. Pratyusha et al., Mater. Today: Proceedings 4 5067–5073 (2017).
- Highly Crystalline Films of PCPDTBT with Branched Side Chains by Solvent Vapor Crystallization: Inﬂ uence on Opto-Electronic Properties, F. S. U. Fischer et al., Adv. Mater. 2015, 27, 1223–1228; DOI: 10.1002/adma.201403475.
- Effect of ambient temperature on the efficiency of the PCPDTBT:PC71BM BHJ solar cells, Z. Ahmad et al., Appl. Phys. A 123:486 (2017); DOI 10.1007/s00339-017-1098-8.
- Synthesis of Poly(4,4-dialkyl-cyclopenta[2,1-b:3,4-b′]dithiophene-alt-2,1,3-benzothiadiazole) (PCPDTBT) in a Direct Arylation Scheme, S. Kowalski et al., ACS Macro Lett., 1 (4), 465–468 (2012); DOI: 10.1021/mz300093w