ITIC-2F (n-type acceptor)

chemical structure ITIC-2F, ITIC-DF, IT-4F, 2097998-59-7
Order Code: M2075A1
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Pricing

Batch Quantity Price
M2075A1 50 mg £234.8
M2075A1 100 mg £399.1
M2075A1 250 mg £831.5
M2075A1 500 mg £1496.7
M2075A1 1 g £2694.1

 

General Information

Purity 99% (1H NMR)
Full name 3,9-bis(2-methylene-((3-(1,1-dicyanomethylene)-6,7-difluoro)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2’,3’-d’]-s-indaceno[1,2-b:5,6-b’]dithiophene
Synonyms ITIC-F, IT-4F, ITIC-DF
Chemical formula C94H78F4N4O2S4
CAS number 2097998-59-7
Molecular weight 1499.90
HOMO / LUMO HOMO = -5.66 eV, LUMO = -4.14 eV [1]
Classification / Family NFAs, Organic semiconducting materials, Low band-gap small molecule, Small molecular acceptor, Organic photovoltaics, Polymer solar cells, NF-PSCs.

 

chemical structure itic-2f, it-4f
Chemical structure of ITIC-2F; CAS No. 2097998-59-7; Chemical formula C94H78F4N4O2S4

Applications

ITIC-2F shows a more red-shifted absorption than ITIC with an improved absorption coefficient, which can be ascribed to enhanced intramolecular charge transfer. For this reason, devices with ITIC-2F as acceptors can cover a broader absorption spectrum - which can potentially enhance the device PCEs.

ITIC-2F also has deeper HOMO/LUMO energy levels. This makes it a better match for most polymer semiconductor donors, and provides better stability for device fabrication and overall performance.

Efficiency of over 13% was achieved when ITIC-2F (IT-4F) was used as an acceptor with polymer PBDB-T-SF as the active-layer donor material with a inverted device structure: indium tin oxide (ITO)/ZnO/PBDB-T-SF:TI-4F (1:1)/MoO3/Al [1].

We also now have ITIC-DCl available as another NFA for highly efficient organic solar cells.

Characterisation (1H NMR)

1h-nmr, itic-2f, itic-df
1H NMR spectrum of ITIC-2F in CDCl3 (see the full version).

 

Literature and Reviews

  1. Molecular Optimization Enables over 13% Efficiency in Organic Solar Cells, W. Zhao at al., J. Am. Chem. Soc., 139 (21), 7148–7151 (2017); DOI: 10.1021/jacs.7b02677.
  2. Energy-Level Modulation of Small-Molecule Electron Acceptors to Achieve over 12% Efficiency in Polymer Solar Cells, S. Li et al, Adv. Mater., 28, 9423–9429 (2016); DOI: 10.1002/adma.201602776.
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