General Information

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CAS Number	2433725-54-1
Full Name	Poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-fluoro)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	(C76H92F2N2S9)n
HOMO / LUMO	HOMO = -5.51 eV, LUMO = -2.77 eV [1]
Solubility	Chloroform, chlorobenzene and dichlorobenzene
Processing Solvents	Chloroform, chlorobenzene and dichlorobenzene
Synonyms	PCE18
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

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Chemical structure of D18 (PCE18), CAS No. 2433725-54-1

Characterisations

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UV-Vis Absorption

UV-Vis absorption of of D18 in film (as-cast film from chlorobenzene on glass).

Cyclic Voltammetry

Cyclic voltammograms of the D18 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.