IHIC, also known as 4TIC, has an acceptor–donor–acceptor (A–D–A) structure consisting of an electron-rich fused hexacyclic unit dithienocyclopentathieno[3,2-b]thiophene core and two electron withdrawing 1,1-dicyanomethylene-3-indanone (IC) terminal units. The rigid planar structure of dithienocyclopentathieno[3,2-b]thiophene promotes inter-molecular charge transport.
IHIC exhibits strong absorption in the NIR range of 600–900 nm with extinction coefficient of up to 6 ×105 m−1 cm−1and high electron mobility of up to 2.4 × 10-3 cm2 V−1 s−1.
When PTB7-Th was used as the low band-gap donor polymer with IHIC as the narrow-bandgap non-fullerene acceptor, excellent device performance was demonstrated with a high power conversion efficiency (PCE) of 9.77%. The active layer exhibits strong NIR absorption but weak visible absorption while giving the device a semi-transparent nature.
Device structure: ITO/ZnO/PTB7-Th: IHIC/MoO3/Au(1 nm)/Ag(15nm)
|Thickness (nm)||VOC(V)||JSC(mA cm-2)||FF (%)||PCE(%)|
|Form||Dark blue powder/crystals|
|Full name||2,2'- [[4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydrothieno [3',2':4,5]cyclopenta[1,2-b]thieno[2'',3'':3',4']cyclopenta [1',2':4,5]thieno[2,3-d]thiophene-2,7-diyl]bis[methylidyne(3-oxo1H-indene-2,1(3H)-diylidene) ]]bis-propanedinitrile|
|Molecular weight||1377.88 g/mol|
|Absorption||λmax796 nm (Film)|
|HOMO / LUMO||HOMO = -5.28 eV, LUMO = -3.87 eV |
|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 DocumentationIHIC MSDS Sheet
Literature and Reviews.
- Fused Hexacyclic Non fullerene Acceptor with Strong Near Infrared Absorption for Semitransparent Organic Solar Cells with 9.77% Efficiency, W. Wang et al., Adv. Mater., 1701308 (2017); DOI: 10.1002/adma.201701308.
- Non fullerene Acceptors for Semitransparent Organic Solar Cells, S. Dai et al., Adv. Energy Mater., 1800002 (2018); DOI: 10.1002/aenm.201800002.
- Near-infrared organic photoelectric materials for light harvesting systems: Organic photovoltaics and organic photodiodes, B. Xie et al., InfoMat., 2, 57–91 (2020); DOI: 10.1002/inf2.12063.
- Trendsetters in High-Efficiency Organic Solar Cells: Toward 20% Power Conversion Efficiency, M. Upama et al., Sol. RRL, 1900342 (2019); DOI: 10.1002/solr.201900342.
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.