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Product Code M2281A1-100mg
Price £460 ex. VAT

D18-Cl, highly efficient polymer semiconductor for NF-PSCs

Deeper HOMO and LUMO levels than D18

Specifications | Pricing and Options | MSDS | Literature and Reviews

D18-Cl, a chlorinated version of D18, is another highly efficient polymer semiconductor that is demonstrating over 18% PCE in non-fullerene polymer solar cells (NF-PSCs).

When compared with D18, which has fluorinated thiophene side chains, shows both deeper HOMO and LUMO energy levels. A device efficiency of 18.12% and certified efficiency of 17.6% have been achieved using D18-Cl as the electron donor and N3 as an acceptor in a single junction non-fullerene polymer solar cell (NF-PSC) [1]. Further improvement of device performance to an outstanding PCE of 18.69% was obtained while a second acceptor PC61BM was used in the active layer [2].

More details are available at our green energy materials collection for non-halogenated solvents processing.

Device structure 1: ITO/PEDOT:PSS/D18-Cl:N3 (1:1.4)/PDIN/Ag

Narrow bandgap copolymer

Narrow bandgap copolymer

For high efficient OPV applications



High purity, batch-specific GPC data, available larger batch orders and higher molecular weight

Worldwide shipping for D18-Cl

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Quick and reliable shipping

Green energy material

Green energy materials

Processable in non-halogenated solvents

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
108 0.859 27.85 75.7 18.13

Device structure 2: ITO/PEDOT:PSS/D18-Cl:N3:PC61BM (1:1.4:0.1)/PDIN/Ag

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
114 0.849 28.22 78 18.69

Luminosyn™ D18-Cl

Luminosyn™ D18-Cl is now available.

High purity
D18-Cl is purified via Soxhlet extraction with acetone, hexane, and chlorobenzene under an argon atmosphere

Large quantity orders
Plan your experiments with polymers from the same batch

General Information

Full name Poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-chloro)thiophen-2-yl)-benzo[1,2-b:4,5-b’]dithiophene))-alt-5,5'-(5,8-bis(4-(2-butyloctyl)thiophen-2-yl)dithieno[3',2':3,4;2'',3'':5,6]benzo[1,2-c][1,2,5]thiadiazole)]
Chemical formula (C76H92Cl2N2S7)n
CAS number n.a.
HOMO / LUMO HOMO = -5.56 eV, LUMO = -2.78 eV [1]
Solubility THF, o-xylene, chloroform, chlorobenzene and dichlorobenzene
Processing solvents THF, o-xylene, chloroform, chlorobenzene and dichlorobenzene
Classification / Family Organic semiconducting materials, Medium bandgap polymers, Organic photovoltaics, Polymer solar cells, Perovskite solar cells, Hole-transport layer materials, NF-PSCs, All-polymer solar cells (all-PSCs).

Chemical Structure

Chemical structure of D18-Cl


UV-Vis Absorption

d18-cl uv-vis absorption in chloroform and in fim
UV-Vis absorption of of D18-Cl in chloroform (CF) and in film (as-cast film on glass) and its solubility in THF at 8 mg/ml.

Cyclic Voltammetry

d18-cl polymer cyclic voltammetry in film
Cyclic voltammograms of the D18-Cl film on platinum electrode in 0.1M Bu4NClO4 in acetonitrile at a scan rate of 100 mV s−1.

The cyclic voltammograms (CV) measurements were recorded on Ossila Potentiostat by using a three-electrode system with platinum disc as the working electrode, platinum wire as the counter electrode, Ag/Ag+ electrode as the reference electrode with a scanning rate of 100 mV/s in a 0.1 M tetrabutylammonium perchlorate (Bu4NClO4) solution. The potential of Ag/Ag+ reference electrode was internally calibrated by using ferrocene/ferroncenium (Fc/Fc+) as the redox couple.


Batch Quantity Price
M2281A1 100 mg £460
M2281A1 250 mg £950
M2281A1 500 mg £1600
M2281A1 1 g £2800
M2281A1 5 g / 10 g* Please contact us for details

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

Batch details

Batch Mw Mn PDI Stock Info
M2281A1 31,139 16,456 1.89 In stock

MSDS Documentation

D18-Cl MSDSD18-Cl MSDS sheet

Literature and Reviews

  1. A chlorinated copolymer donor demonstrates a 18.13% power conversion efficiency, J. Qin et al., J. Semicond., 42 (1), 010501 (2021); DOI: 10.1088/1674-4926/42/1/010501.
  2. 18.69% PCE from organic solar cells, K. Jin et al., J. Semicond., 42(6), 060502 (2021); DOI: 10.1088/1674-4926/42/6/060502.
  3. Approaching 18% efficiency of ternary organic photovoltaics with wide bandgap polymer donor and well compatible Y6 : Y6-1O as acceptor, X. Ma et al., Natl. Sci. Rev. 8, nwaa305 (2021); DOI: 10.1093/nsr/nwaa305.
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