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Product Code M2306A1-50mg
Price £260 ex. VAT

L8-BO-F, highly efficient non-fullerene acceptor

Higher solubility and morphoplogy than L8-BO, giving impressive device performances

Specifications | Pricing and Options | MSDS | Literature and Reviews

Structurally, L8-BO-F has the same thienothienopyrrolo-thienothienoindole (TTP-TTI) core units as L8-BO (L8-BO-2F) with mono-fluorinated peripheral 2-(5 or 6-fluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile end-groups.

L8-BO-F is another highly efficient non-fullerene acceptor that belongs to Y6 family. Similar to L8-BO, it has a branched 2-butyloctyl side chain which not only promotes solubility but also improves the morphology to achieve better packed film with higher intermolecular stackings, balanced charge transport and to reduce charge combination. L8-BO-F is also believed to suppresses the non-radiative recombination leading to a reduce the voltage loss.

High efficient non-flullerene acceptor

High efficient non-flullerene acceptor

With highly conjugated core

Improved film quanlity

Improved film quanlity

Owing to the branched butyloctyl side chain

Worldwide shipping

Worldwide shipping

Quick and reliable shipping

High purity

High purity

>99% pure

Outstanding device performance with PCE of 18.66% has achieved while a binary BTP-eC9 and L8-BO-F non-fullerene acceptors were used with polymer donor PM6. The polymer donor and mixed NFAs give complementary absorptions in the visible and NIR region with well matched energy alignment.

Device structure: ITO/PEDOT:PSS/PM6:BTP-eC9:L8-BO-F (1:1.2)/PNDIT-F3N/Ag

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
100 0.853 27.35 80.00 18.66

General Information

CAS Number N/A
Chemical Formula C84H92F2N8O2S5
Purity >99% (1H NMR)
Full Name 2,2'-((2Z,2'Z)-((12,13-bis(2-ethylhexyl)-3,9-(2-butyloctyl)-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2",3’':4’,5']thieno[2',3':4,5]pyrrolo[3,2-g]thieno[2',3':4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5 or 6-fluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile
Molecular Weight 1444.00 g/mol
HOMO / LUMO HOMO = -5.59 eV, LUMO = -3.85 eV [1]
Solubility Chloroform, chlorobenzene and dichlorobenzene
Form Dark blue powder/crystal
Synonyms L8-BO-F
Classification / Family BTP series 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.

Chemical Structure

L8-BO-F chemical structure, NFAs
Chemical structure of L8-BO-F, highly efficient non-fullerene acceptor

MSDS Documentation

L8-BO-F MSDS sheetL8-BO-F MSDS sheet


Batch Quantity Price
M2306A1 50 mg £260
M2306A1 100 mg £400
M2306A1 250 mg £800
M2306A1 500 mg £1450
M2306A1 1 g £2500
M2306A1 5 g / 10 g* Please contact us for details

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

Literature and Reviews

  1. A Well-Mixed Phase Formed by Two Compatible Non-Fullerene Acceptors Enables Ternary Organic Solar Cells with Efficiency over 18.6%, Y. Cai et al., Adv. Mater., 33 (33); 2101733 (2021); DOI: 10.1002/adma.202101733.
  2. A facile strategy for third-component selection in non-fullerene acceptor-based ternary organic solar cells, Y. Li et al., Energy Environ. Sci., 14, 5009-5016 (2021); DOI: 10.1039/D1EE01864G.
  3. Non-fullerene acceptors with branched side chains and improved molecular packing to exceed 18% efficiency in organic solar cells, C. Li et al., Nat. Energy, 6, 605–613 (2021); DOI: 10.1038/s41560-021-00820-x.
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