PCDTBT (CAS 958261-50-2), poly[N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)], is a carbazole-based donor polymer for organic photovoltaics. Batch M0131A1 has an Mw of 42,661, an Mn of 18,804 and a PDI of 2.27.
Its relatively deep HOMO (-5.4 eV) and LUMO (-3.6 eV) levels raise open circuit voltage, extend absorption to longer wavelengths and improve stability in air. In the manufacturer's labs, a standard PEDOT:PSS / PCDTBT:PC70BM / Ca/Al device reached a power conversion efficiency of up to 6.7%. Published work using advanced interface layers and antireflection coatings reports up to 7.2%.
Because it stays stable under ambient conditions, PCDTBT is well suited to large-area coating methods such as ink-jet printing, spray coating and blade coating. It is part of the Luminosyn™ range. The polymer is purified by Soxhlet extraction with methanol, hexane and chlorobenzene under argon, and each batch comes with its own GPC data.
- Donor polymer in bulk heterojunction organic photovoltaic devices blended with PC70BM.
- Active layer deposition by ink-jet printing, spray coating or blade coating thanks to its air stability.
- Hole-transport material in perovskite solar cells, as reported in the literature.
- Research on organic semiconductors for OLEDs and OFETs.
| Brand | Ossila |
|---|---|
| CAS number | 958261-50-2 |
| Molecular formula | (C43H47N3S3)n |
| Purity | — |
| Category | — |
| Pack sizes | 100 mg, 250 mg, 500 mg, 1 g, 2 g |
| Physical form | — |
| Storage | — |
- Product code: M0131A1
- Full Name: Poly[N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)]
- Batch: M0131A1
- Mw: 42,661
- Mn: 18,804
- PDI: 2.27
- HOMO / LUMO: HOMO = -5.4 eV, LUMO = -3.6 eV
- Soluble In: Chloroform, chlorobenzene, dichlorobenzene and trichlorobenzene
- Recommended Processing Solvents at 10mg/ml: Chloroform, chlorobenzene
- Purification: Soxhlet extraction with methanol, hexane, and chlorobenzene under argon atmosphere
Air stability is improved by the low-lying HOMO level. Reference solutions were prepared in anhydrous chlorobenzene at 80°C and filtered through a 0.45 μm PTFE filter before use. Refer to the MSDS for safety information.
—