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更新时间：2026/10/14 9:05:13关注度：1368
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PCPDTBT (CAS number 920515-34-0), 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 [2].
| Full Name | Poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b′]dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] |
|---|---|
| Synonyms | C-PCPDTBT |
| CAS Number | 920515-34-0 |
| Chemical Formula | (C31H38N2S3)n |
| Molecular Weight | See Batch Details table below |
| HOMO / LUMO | HOMO = - 5.3 eV, LUMO = - 3.6 eV [1] |
| 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. |
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