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Non-Fullerene Acceptors

Product Code M2240A1-50mg
Price $325 ex. VAT

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IEICO-4F, low band-gap, low energy loss non-fullerene acceptor

Used in high performance organic solar cells and panchromatic organic photodetectors

IEICO-4F (or IOTIC-4F) is a low band-gap and low energy-loss non-fullerene acceptor showing an A-D-A type structure with extra thiophenes as spacers between the acceptor and donor units. The structure has an electron-donating fused five-member-ring indaceno[1,2-b:5,6-b′]dithiophene (IDT) core, terminated by two electron-withdrawing units, 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (IC-2F). IEICO-4F extends into the near infrared (NIR) region with maximum absorption around 860 nm, 200 nm red-shifted compared to ITIC.

IEICO-4F or IEICO-4Cl can also be used in high performance panchromatic organic photodetectors (OPDS). OPD device based on P3HT:IEICO-4F:PC71BM exhibited a high detectivity (D*) of 1.35 × 1012 Jones at 805 nm.

By incorporating a small molecule donor BIT-4F-T, combining the merits of complementary absorption of the visible light region (400 - 600 nm) to the polymer donor PTB7-Th and non-fullerene acceptor IEICO-4F, PTB7-Th:BIT-4F-T:IEICO-4F ternary organic solar cells showed improved efficiencies, reaching up to a PCE of 14.0%.

Device structure: ITO/ZnO (~35 nm)/PTB7-Th:BIT-4F-T:IEICO-4F (0.9:0.1:1, 10% BIT-4F-T) and (~150 nm)/MoOx (~7 nm)/Ag (~100 nm)

Thickness (nm) VOC(V) JSC(mA cm-2) FF (%) PCE(%)
150 0.723 27.30 70.9 14.0

Chemical Structure

Chemical structure of IEICO-4F

Literature and Reviews

  1. Spectral Engineering of Semitransparent Polymer Solar Cells for Greenhouse Applications, H. Shi et al., Adv. Energy Mater., 1803438 (2018); DOI: 10.1002/aenm.201803438.
  2. Dual Sensitizer and Processing-Aid Behavior of Donor Enables Efficient Ternary Organic Solar, Cells, X. Song et al., Joule 3, 846–857(2019); doi: 10.1016/j.joule.2019.01.009.
  3. A Near-Infrared Photoactive Morphology Modifier Leads to Significant Current Improvement and Energy Loss Mitigation for Ternary Organic Solar Cells, L. Zhan et al., Adv. Sci., 5, 1800755 (2018); DOI: 10.1002/advs.201800755.
  4. High Efficient Near-infrared and Semitransparent Polymer Solar Cells Based on an Ultra-Narrow Bandgap Nonfullerene Acceptor, J. Chen et al., J. Mater. Chem. A, 7, 3745-3751 (2019); doi: 10.1039/C8TA11484F.

General Information

CAS Number 2089044-02-8
Chemical Formula C114H114F4N4O4S4
Purity >99% (1HNMR)
Full Name 2,2'-((2Z,2'Z)-(((4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydro-sindaceno[1,2-b:5,6-b']dithiophene-2,7-diyl)bis(4-((2-ethylhexyl)oxy)thiophene-5,2-diyl))bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1- diylidene))dimalononitrile
Molecular Weight 1808.40 g/mol
Absorption λmax 865 nm (Film), NIR absorption
HOMO / LUMO HOMO = -5.44 eV, LUMO = -4.19 eV [1]
Solubility Chloroform, chlorobenzene
Form Dark blue powder/crystals
Synonyms 2,2'- [[4,4,9,9-Tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-diyl]bis]] [[4-[(2-ethylhexyl)oxy]-5,2-thiophenediyl]methylidyne(5,6-difluoro-3-oxo-1H-indene-2,1(3H)-diylidene) ]]bis[propanedinitrile], IOTIC-4F
Classification / Family NFAs, n-type non-fullerene electron acceptors, Organic semiconducting materials, Low band-gap small molecule, Small molecular acceptor, Organic photovoltaics, Organic photodetectors (OPDs), Polymer solar cells, NF-PSCs.

MSDS Documentation



Batch Quantity Price
M2240A1 50 mg £260
M2240A1 100 mg £320
M2240A1 250 mg £640
M2240A1 500 mg £1150
M2240A1 1 g £2100

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, military, pharmaceuticals, cosmetics, food, or commercial applications.

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