L8-BO-F

Green Energy Materials, Non-Fullerene Acceptors, Organic Conductors

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

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

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

With highly conjugated core

Improved film quanlity

Owing to the branched butyloctyl side chain

Worldwide shipping

Quick and reliable shipping

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)	V_OC(V)	J_SC (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

MSDS Documentation

L8-BO-F MSDS sheet

Pricing

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

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.
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.
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.

High-efficiency organic solar cells with low voltage loss induced by solvent additive strategy, J. Song et al., Matter, 4 (7), 2542-2552 (2021); DOI: 10.1016/j.matt.2021.06.010.
18.77 % Efficiency Organic Solar Cells Promoted by Aqueous Solution Processed Cobalt(II) Acetate Hole Transporting Layer, H. Meng et al., Angew. Chem, 133 (41); 22728-22735 (2021); DOI: 10.1002/ange.202110550.