NOVELTY - Photovoltaic coating, preferably exclusively organic coating, comprises a mixture of organic N-type and P-type semiconductor compounds, where the coating is a coating comprising organic N-type and P-type semiconductor compounds in combination with in the layer, in which at least one organic semiconductor compounds, preferably organic N-type semiconductor compound (I), is a compound comprising a core quinone.    USE - The coating is useful in photovoltaic cells.    ADVANTAGE - The semiconductor compounds are mechanically more flexible, and less brittle.    DETAILED DESCRIPTION - Photovoltaic coating, preferably exclusively organic coating, comprises a mixture of organic N-type and P-type semiconductor compounds, where the coating is a coating comprising organic N-type and P-type semiconductor compounds in combination with in the layer, in which at least one organic semiconductor compounds, preferably organic N-type semiconductor compound, is a compound comprising a core quinone, of formula (I).    A1 = =O, =C(CN)2 or =N(CN);    R1, R2, R3, R4 = H, halo (F, Cl or Br), amino, CN, -SO2CF3 group, -O-alkyl, -O-aryl, or hydrocarbon group (1-12C alkyl or optionally substituted aryl group), provided that two or more of R1-R4 may together form a polycyclic (hetero)aryl ring structure;    A1a = =O, =C(CN)2, =N(CN), =A2a=A1 or A2a; and    A2a = aryl ring, provided that A1a, R2 and/or R3 can together form a polycyclic aryl structure.    INDEPENDENT CLAIMS are included for:    (1) organic compound for the manufacture of a coating, preferably P-type semiconductor compound of formula (IV); and    (2) organic oligomeric compound, for the manufacture of a coating, preferably P-type semiconductor compound comprising phenyl units of formula (V).    (1) D = cyclic, (hetero)aryl or organometallic hydrocarbon group (optionally substituted) or a polymer chain;    (2) C1 = cyclic, (hetero)aryl hydrocarbon group, optionally substituted;    (3) A2 = a group consisting of H, F, CN, CF3, COOR1i, or CONR1iR1j; and    (4) R1i, R1j = H or alkyl group.