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BTP-eC9 CAS 2598965-39-8
Product Code M2249A1-100mg
Price £360 ex. VAT
£ GBP

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BTP-eC9, Y series n-type non-fullerene acceptor with NIR absorption

Available to buy online or request a quote today and enjoy discounts on large quantities

Specifications | Pricing and Options | MSDS | Literature and Reviews

BTP-eC9 (CAS number 2598965-39-8) is a family member of the Y series of n-type non-fullerene semiconducting acceptors. It has been proven that these NFAs can achieve high device performance in non-fullerene polymer solar cells (NF-PSCs).

With a fused thienothienopyrrolo-thienothienoindole (TTP-TTI) core, BTP-eC9 is a modified version of Y7 but with better solubility. Comparing to Y6, chlorination at the peripheral end-groups can efficiently lower HOMO/LUMO energy levels. C–Cl bond also has a large dipole moment, expanding the absorption range further to near infrared (NIR) region.

High efficient non-flullerene acceptor

High efficient non-flullerene acceptor

With highly conjugated core

Expanded absorption range to near infrared

Expanded absorption range

large dipole moment induced by chloride substituents

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Green energy material

Green energy materials

Processable in non-halogenated solvents

A device efficiency approaching 18% has been reported using BTP-eC9 as the electron acceptor and PBDB-T-2F (PM6) as electron donor in single junction organic photovoltaic cells.

Device structure: ITO/PEDOT:PSS/PBDB-T-2F:BTP-eC9 (1:1.2)/PFN-Br/Al

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
100 0.839 26.2 81.1 17.8

General Information

CAS Number 2598965-39-8
Chemical Formula C86H94Cl4N8O2S5
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(5,6-chloro-3-oxo-1H-indene-2,1(3H)-diylidene) ]]bis[propanedinitrile]
Molecular Weight 1573.89 g/mol
HOMO / LUMO HOMO = -5.64 eV, LUMO = -4.05 eV [1]
Solubility Chloroform, chlorobenzene and dichlorobenzene
Form Dark blue powder/crystal
Synonyms eC9, BTP-eC9
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

BTP-eC9 chemical structure
Chemical structure of BTP-eC9

Pricing

Batch Quantity Price
M2249A1 100 mg £360
M2249A1 250 mg £720
M2249A1 500 mg £1250
M2249A1 1 g £2300
M2249A1 5 g / 10 g* Please contact us for details

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

MSDS Documentation

BTP-eC9 MSDS SheetBTP-eC9 MSDS sheet

Literature and Reviews

  1. Single-Junction Organic Photovoltaic Cells with Approaching 18% Efficiency, Y. Cui et al., Adv. Mater., 32 (19), 1908205 (2020); DOI: 10.1002/adma.201908205.
  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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