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CAS Number 2089044-02-8

Materials, Non-Fullerene Acceptors

Product Code M2240A1-50mg
Price £260 ex. VAT

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

Used in high performance organic solar cells and panchromatic organic photodetectors

Specifications | Pricing and Options | MSDS | Literature and Reviews

IEICO-4F (or IOTIC-4F), CAS number 2089044-02-8, 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%.

High efficient non-flullerene acceptor

High efficient non-flullerene acceptor

with highly conjugated core

Wide absorption range into near infrared region

Wide absorption range into near infrared region

Maximum absorption around 860 nm

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High purity

High purity

>99% High purity

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

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.


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

MSDS Documentation


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.
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