Batch Details

Batch	Mw	PDI
M2096A1	>30,000	<=3

 

General Information

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 above
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.

 

 

Applications

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 [2].

 

Literature and Reviews

1. 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).
2. Highly Crystalline Films of PCPDTBT with Branched Side Chains by Solvent Vapor Crystallization: In? uence on Opto-Electronic Properties,  F. S. U. Fischer et al., Adv. Mater. 2015, 27, 1223–1228; DOI: 10.1002/adma.201403475.
3. 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.
4. 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