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Product Code M2301A1-100mg
Price £360 ex. VAT

eC9-2Cl for devices with efficiencies approaching 19%

Sister compound to BTP-eC9, available from £360

Specifications | Pricing and Options | MSDS | Literature and Reviews

eC9-2Cl is another highly efficient non-fullerene acceptor that belongs to the Y6 acceptors family. With a fused thienothienopyrrolo-thienothienoindole (TTP-TTI) core, eC9-2Cl is a sister compound to BTP-eC9 with two less chlorine atoms on the peripheral benzene end groups. Comparing to BTP-eC9, the absorption of eC9-2Cl is blue shifted for about 20 nm at its maximum absorption with elevated HOMO/LUMO energy levels.

Device efficiency approaching 19% (certified value of 18.7%) has been achieved by using PBQx-TF as the polymer donor and eC9-2Cl and F-BTA3 as a mixed electron acceptors in single junction organic photovoltaic cells.

High efficient non-flullerene acceptor

High efficient non-flullerene acceptor

With highly conjugated core

Enhanced solubility

Enhanced solubility

with butyloctyl alkyl chains

Worldwide shipping for eC9-2Cl

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Green energy material

Green energy materials

Processable in non-halogenated solvents

Device structure: ITO/PEDOT:PSS/PBQx-TF:eC9-2Cl:F-BTA3 (1:1.2:0.2)/PNDIT-F3N-Br/Al

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
100 0.879 26.7 80.9 19.0

General Information

CAS Number N/A
Chemical Formula C86H96Cl2N8O2S5
Purity ≥98% (1H NMR)
Full Name 2,2'- [[12,13-Bis(2-butyloctyl)-12,13-dihydro-3,9-dinonylbisthieno[2'',3'':4',5']thieno[2',3':4,5]pyrrolo[3,2-e:2',3'-g][2,1,3]benzothiadiazole-2,10-diyl]bis[methylidyne(2 or 3-chloro-3-oxo-1H-indene-2,1(3H)-diylidene) ]]bis[propanedinitrile]
Molecular Weight 1504.96 g/mol
HOMO / LUMO HOMO = -5.57 eV, LUMO = -3.74 eV [1]
Solubility Chloroform, chlorobenzene and dichlorobenzene
Form Dark blue powder/crystal
Synonyms BTP-eC9-2Cl, eC9-Cl
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

eC9-2Cl chemical structure, non-fullerene acceptors
Chemical structure of eC9-2Cl, non-fullerene acceptor

MSDS Documentation

eC9-2Cl MSDS SheeteC9-2Cl MSDS sheet


Batch Quantity Price
M2301A1 100 mg £360
M2301A1 250 mg £720
M2301A1 500 mg £1250
M2301A1 1 g £2300
M2301A1 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. Single-Junction Organic Photovoltaic Cell with 19% Efficiency, Y Cui et al., Adv. Mater., 2102420 (2021); DOI: 10.1002/adma.202102420..
  2. Self-assembled Monolayer Enables Hole Transport Layer-Free Organic Solar Cells with18% Efficiency and Improved Operational Stability, Y. Lin et al., ACS Energy Lett., 5, 9, 2935–2944 (2020); DOI: 10.1021/acsenergylett.0c01421.
  3. Chlorination: An Effective Strategy for High-Performance. Organic Solar Cells, Q. Zhao et al., Adv. Sci., 7, 2000509 (2020); DOI: 10.1002/advs.202000509.
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