TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preparation (Claimed): The preparation of (I), comprises reacting nitrogen containing ring compounds of formula (Nasterisk-G1-E1) (II) and bridge B1 compounds of formula ((R)2D1-B1-D1(R)2) (III) with copper containing compounds of formula (Cu(I)X1) (IV). Preferred Method: The method further comprises adding diethyl ether, pentane, hexane, methyl-tert-butylether, methanol, ethanol or water for recovery of (I) in the form of a solid. Preferred Components: The substituent to increase solubility in (I) is 1-30C partially branched or cyclic alkyl chains, 1-30C partially branched or cyclic alkoxy chain, 1-30C partially branched or cyclic perfluoroalkyl or short-chain polyethers having a chain length of 3-50 repeating units. The substituent to improve charge carrier transport in (I) is electron conductor or hole conductor. The proportion of (I) at the emitter or absorber is 100%, preferably 1-99%. The concentration of (I) as emitter in optical light-emitting components, preferably organic light-emitting devices (OLEDs) is 5-80%.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The optoelectronic component comprises a substrate, at least a light emitting layer containing (I), an anode (2), a cathode, at least one each hole injection layer (3) and electron injection layer and at least one each hole transport layer (4) and electron transport layer (8), where the light emitting layer is applied to the substrate, the anode and the cathode are applied to the substrate, the light-emitting layer is applied between the anode and cathode, the hole injection layer and electron injection layer is applied between the anode and cathode, the hole transport layer and electron transport layer is applied between the hole injection layer and electron injection layer, and the light emitting layer is applied between the hole transport layer and electron transport layer.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The reaction is carried out in dichloromethane, acetonitrile, tetrahydrofuran, dimethylsulfoxide or ethanol. SPECIFIC COMPOUNDS - 12 Compounds (I) are disclosed, e.g.(2-(diphenylphosphino)-5-phenyl-1,3,4-oxadiazole-bis(2-phenyl phosphino ethyl)phenyl phosphine)copper(I) iodide of formula (Ia), (2-(diphenyl)phosphino-4-methyl pyridine)(1,6-bisdiphenylphosphino-hexane)copper(I) iodide of formula (Ib), (2-(diphenyl)phosphino-4-methyl pyridine)(1,5-bisdiphenylphosphino-pentane)copper(I) iodide of formula (Ic), (2-(diphenyl)phosphino-4-methyl pyridine)(1,3-bisdiphenylphosphino-xylene)copper(I) iodide of formula (Id) and (2-(diphenyl)phosphino-4-methyl pyridine) (1,4-bis((diphenylphosphino)oxy)benzene)copper(I) iodide of formula (Ie).    EXAMPLE - 2-(Diphenylphosphino)-5-phenyl-1,3,4-oxadiazole, copper(I) iodide and bis(2-phenyl phosphino ethyl)phenyl phosphine were reacted in dichloromethane at room temperature to obtain (2-(diphenylphosphino)-5-phenyl-1,3,4-oxadiazole-bis(2-phenyl phosphino ethyl)phenyl phosphine)copper(I) iodide.