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Non-Fullerene Acceptors

Product Code M2252A1-100mg
Price $400 ex. VAT

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IDT-2Br, NFA with excellent thermal stability and a strong, broad absorption

High purity (≥98%) and able to give device performances of up to 12.1% efficiency

IDT-2Br, like o-IDTBR, has an electron-donating ladder-type fused five-member-ring indaceno[1,2-b:5,6-b′]dithiophene (IDT) core with 4-hexylphenyl side chains, flanked by two electron withdrawing benzothiadiazole moieties and rhodanine terminated groups.

IDT-2Br is a planar electron acceptor when it is compared with o-IDTBR, exhibiting excellent thermal stability, strong and broad absorption, relatively high electron mobility.

When PTB7-Th was used as the low band-gap donor polymer, mixed acceptors of F8IC and IDT-2Br demonstrated a great device performance with 12.1% efficiency

Device structure: indium tin oxide (ITO)/ zinc oxide (ZnO)/PCE10:IDT-2BR:F8IC/molybdenum oxide (MoO3)/Ag [2]

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
100 nm 0.687 25.1 69.9 12.1

Chemical Structure

Chemical structure of IDT-2Br

Literature and Reviews

  1. A planar electron acceptor for efficient polymer solar cells, Y. Wu et al., Energy Environ. Sci., 8, 3215-3221 (2015); doi: 10.1039/C5EE02477C.
  2. High-performance ternary organic solar cells with photoresponses beyond 1000 nm, P. Xue et al., J. Mater. Chem. A, 6, 24210-24215 (2018); doi: 10.1039/C8TA09042D.

General Information

CAS Number 2042521-91-3
Chemical Formula C88H88N6O2S8
Purity ≥98% (1H NMR)
Full Name 5,5'-[[4,4,9,9-Tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-diyl]bis(2,1,3-benzothiadiazole-7,4-diylmethylidyne)]bis[3-ethyl-2-thioxo-4-thiazolidinone]
Molecular Weight 1518.20 g/mol
Absorption λmax 636 nm (Chloroform); λmax 658 nm (Film)
HOMO / LUMO HOMO = -5.52 eV, LUMO = -3.69 eV [1]
Melting Point TGA 367 °C (5% weight loss) (lit.)
Solubility Chloroform, chlorobezene
Form Dark blue powder/crystals
Synonyms IDT2BR
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
M2252A1 100 mg £320
M2252A1 250 mg £640
M2252A1 500 mg £1150
M2252A1 1 g £2100
M2252A1 5 g / 10 g* Please contact us for details

*for 5 - 10 grams order quantity, the lead time is 4 - 6 weeks

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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