Conjugated polymers

A polymer comprising one or more units selected from formula A and two or more distinctive units selected from formula D

• wherein the individual radicals, independently of each other, and on each occurrence identically or differently, have the following meanings
• V1 C or NR1,
• V2 C or NR2,
• W S, O, CR3R4, SiR3R4, GeR3R4, NR3,
• R1-4 H, halogen, CN, or straight-chain, branched or cyclic alkyl with 1 to 30 C atoms, in which one or more CH2 groups are optionally replaced by —O—, —S—, —C(═O)—, —C(═S)—, —C(═O)—O—, —O—C(═O)—, —NR0—, —SiR0R00—, —CF2—, —CR0═CR00—, —CY1═CY2— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, and in which one or more H atoms are optionally replaced by F, Cl, Br, I or CN, and in which one or more CH2 or CH3 groups are optionally replaced by a cationic or anionic group, or denote a saturated or unsaturated, non-aromatic carbo- or heterocyclic group, or an aryl, heteroaryl, aryloxy or heteroaryloxy group, wherein each of the aforementioned cyclic groups has 5 to 20 ring atoms, is mono- or polycyclic, does optionally contain fused rings, and is unsubstituted or substituted by one or more identical or different groups RS,
• RS halogen, —CN, —NC, —NCO, —NCS, —OCN, —SCN, —C(═O)NR0R00, —C(═O)X0, —C(═O)R0, —NH2, —NR0R00, —SH, —SR0, —SO3H, —SO2R0, —OH, —NO2, —CF3, —SF5, optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 40 C atoms that is optionally substituted and optionally comprises one or more hetero atoms,
• Y1, Y2 H, F, Cl or CN,
• X0 halogen,
• R0, R00 H or alkyl with 1 to 24 C-atoms.