TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Component: The organic solar cell has donor-acceptor junctions in the form of bulk-heterojunction and/or flat junction. The organic solar cell comprises a substrate having at least one cathode, at least one anode and at least one halogenated phthalocyanine (Ia) and/or (Ib) as photoactive material and semiconductor material comprising fullerene and/or fullerene derivative, preferably C60. The semiconductor material further comprises rylene, preferably 1,6,7,12-tetrachloroperylene-3,4:9,10-tetracarboximide. The semiconductor material is used along with dopant, chosen from pyronin B, rhodamine and/or 3,6-difluoro-2,5,7,7,8,8-hexacyanoquinodimethane. The organic solar cell is a tandem solar cell comprising a sub cell, which contains halogenated phthalocyanine (Ia) and/or (Ib) and fullerene or fullerene derivative, preferably C60. The organic field-effect transistor comprises substrate having gate structure(s), source electrode, drain electrode and halogenated phthalocyanine (Ia) and/or (Ib) as semiconductor, preferably n-semiconductor or p-semiconductor. The substrate has a multitude of organic field-effect transistors. A semiconductor unit comprises at least one substrate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The halogenated phthalocyanine compound (Ia) and/or (Ib) is used as semiconductor material in organic photovoltaic or organic field-effect transistor. The halogenated phthalocyanine compound (Ia) and/or (Ib) is used as charge transfer material in organic photovoltaic and organic light-emitting diodes. The halogenated phthalocyanine compound (Ia) and/or (Ib) is used as electron donor, and compound chosen from fullerene, fullerene derivative and rylene compound as electron acceptor in a photoactive layer of an organic solar cell. The fullerene (C60) is used as electron acceptor. Preferred Definitions:    M=divalent metal, preferably copper or zinc or divalent halogen metal moiety, preferably aluminum(III) chlorine or aluminum (III) fluorine;    R1-R10=halogen chosen from fluorine or chlorine, preferably R4,R8 is halogen;and    R11-R16=H.    SPECIFIC COMPOUNDS - 102 specific halogenated phthalocyanine compounds are disclosed.    EXAMPLE - Xylene (300 ml), N,N'-dimethyl imidazolidino-tetramethyl guanidinium chloride (5), potassium fluoride (58.1) were mixed with 4,5-dichlorophthalonitrile (19.75) and hated at 120 degrees C for 13 hours. The obtained mixture was filtered, solvent was removed and reduced pressure and compound was subjected to chromatography, to obtain white material. The obtained material, nitrobenzene (100 ml), difluorophthalonitrile (13.13), copper chloride (2.18) and molybdenum trioxide (0.29) were mixed in presence of ammonia and heated at 200 degrees C. The obtained mixture was stirred for 3 hours and subjected to fractional crystallization, to obtain halogenated phthalocyanine compound with yield of 74%.