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Y6 (BTP-4F)

Product Code M2200A1

Y6 NFA acceptor
Chemical structure of Y6 (BTP-4F)

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.

MSDS Documentation



Batch Quantity Price
M2200A1 50 mg £200.00
M2200A1 100 mg £350.00
M2200A1 250 mg £700.00
M2200A1 500 mg £1,200.00
M2200A1 1 g £2,200.00
M2200A1 5 g* £9,000.00

*4-5 weeks lead time

Literature and Reviews

  1. Single-Junction Organic Solar Cell with over 15% Efficiency Using Fused-Ring Acceptor with Electron-Deficient Core, J. Yuan et al., Joule (2019); doi: 10.1016/j.joule.2019.01.004.
  2. Fluorination vs. chlorination: a case study on high performance organic photovoltaic materials, Y. Zhang et al., Sci. China. Chem., 61 (10), 1328-1337 (2018); doi:10.1007/s11426-018-9260-2.
  3. Achieving over 16% efficiency for single-junction organic solar cells, B. Fan et al., Sci. China Chem., 62, 6 746-752 (2019); doi: 10.1007/s11426-019-9457-5.
  4. 16.67% Rigid and 14.06% Flexible Organic Solar Cells Enabled by Ternary Heterojunction Strategy, Yan T et al., Adv Mater., 31(39):e1902210 (2019); doi: 10.1002/adma.201902210.

To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.