NOVELTY - Photoelectric semiconductor component (Q) comprises a photoactive layer from at least two molecular components, preferably at least an electron donor, and at least a soluble and crystallization capable fullerene derivative (I), as an electron acceptor, where (I) comprises a carbon cluster with 60-960C-atoms, preferably 60-70C atoms, and at least a substituent bond over a cyclopropane ring at the carbon cluster.    USE - (Q) is useful as photovoltaic cell, photodiode, solar module, photodetector, optical scanner or building element for measuring the light intensity (claimed).    ADVANTAGE - (I) used in (Q): can be synthesized easily and exhibits improved blend morphology and crystallinity. (Q) provides solar cell with enhanced efficiency.    DETAILED DESCRIPTION - Photoelectric semiconductor component (Q) comprises a photoactive layer from at least two molecular components, preferably at least an electron donor, and at least a soluble and crystallization capable fullerene derivative of formula (I), as an electron acceptor, where (I) comprises a carbon cluster with 60-960C-atoms, preferably 60-70C atoms, and at least a substituent bond over a cyclopropane ring at the carbon cluster.    F1 = carbon cluster;    E1, E2 = COOR, COR, CONRR1, P(O)(OR)2 or SO2R;    R, R1 = 1-20C, preferably 1-12C-aliphatic residue optionally terminally substituted with H, SH, S-alkyl, SS-alkyl, NH, OH or COOH, where each third CH2-unit in the aliphatic residue is substituted by O, S or NR2, an aromatic residue, preferably phenyl, benzyl, naphthyl, anthracenyl or pyrenyl with a terminal residue of H, SH, S-alkyl, SS-alkyl, NH, OH or COOH, a linear optionally substituted 1-20C-aliphatic residue coupled with a liquid crystalline promoter containing a solid molecule part (aromate or cycloaliphate, preferably phenyl, biphenyl, anthracenyl, pyrazinyl, cyclohexyl, cholesteryl) and a polarizable group (preferably COO, CONH, CH=N, N=N, NO=N, CH=CH, CH=CH-CH=N, C?=C) with the solid molecule part connected with an end group (which is alkyl, alkoxy, OCOalkyl, COOalkyl, OCOOalkyl, CN, halo or NO2), a liquid crystalline promoter containing solid molecule parts connected with one of the polarizable group or a liquid crystalline promoter containing two successive solid molecule part connected with one of the end group, where in all types of the liquid crystalline promoter the alkyl, alkoxy, OCOalkyl, COOalkyl, OCOOalkyl end group is terminated with H, SH, S-alkyl, SS-alkyl, NH, OH or COOH; and    R2 = H, (1-20C)-alkyl, phenyl or benzyl.    Where according to the variation of the residues R, R1 and R2 in E1 and E2, the solubility, film forming crystalline, partially crystalline, liquid crystalline or self-assembling characteristics and further over the derivitazation degree of (I), the energy band position for the valence/conduction band, on which material of the electron donors are tunable, are adjusted. INDEPENDENT CLAIMS are included for:    (1) the preparation of (Q) comprising mixing at least an electron donor material and fullerene with a liquid, which is a solvent mixture or a solvent with an insoluble portion to obtain a photoactive layer, and drying the obtained layer;    (2) the photoconducting layer, obtained by the above process; and    (3) the fullerene derivative (I).