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  • 产品名称：英国ossila材料Y6 (BTP-4F)

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Y6 (BTP-4F) is a highly conjugated organic semiconductor. It is composed of a fused thienothienopyrrolo-thienothienoindole (TTP-TTI) core base and 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (2FIC) end units. These 2FIC end units are believed to promote intermolecular interactions and enhance optical absorption.

Having a A-DAD-A structure, it is electron deficient and is used in highly efficient OPV devices as a non-fullerene electron acceptor (NFA).

The absorption of Y6 has a maximum at around 810 nm and extends to 1100 nm (corresponding to the near infra-red).

Optimised photovoltaic devices using Y6 as the acceptor and PBDB-T-2F (PM6) as the polymer donor can demonstrate efficient device performance with power conversion efficiencies (PCEs) of up to 15.7%.

Device structure: ITO/PEDOT:PSS/PM6:Y6/PDINO/Al.

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
150 0.86 25.3 74.8 15.7

Characterisation (1H NMR)

1H-NMR spectrum of Y6 (BTP-4F) in CDCl3

General Information

Purity >99% (1H NMR)
Full name 2,2'-((2Z,2'Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2",3’':4’,5']thieno[2',3':4,5]pyrrolo[3,2-g]thieno[2',3':4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile
Synonyms TTPTTI-4F, BTPTT-4F, BTP-4F, Y6F, BTP-4F-8
Chemical formula C82H86F4N8O2S5
CAS number 2304444-49-1
Molecular weight 1451.93 g/mol
HOMO / LUMO HOMO = -5.65 eV, LUMO = -4.10 eV [1]
Classification / Family NFAs, n-type non-fullerene electron acceptors, Organic semiconducting materials, Low band-gap small molecule, Small molecular acceptor, Organic photovoltaics, Polymer solar cells, NF-PSCs.



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