Abstract: An optoelectronic component with a photonic crystal, which also has an electronic band gap, and a method for controlling tunneling electron currents by means of photons are proposed. Essentially loss-free and very fast switching is enabled in that a photonic crystal has a defect mode in its photonic band gap for photons with such an energy that electron transitions, especially in the form of single-electron tunneling processes between adjacent ligand-stabilized metal clusters, can be induced by the irradiation of corresponding photons due to at least one defect site.

Abstract: An optoelectronic component with a photonic crystal, which also has an electronic band gap, and a method for controlling tunneling electron currents by means of photons are proposed. Essentially loss-free and very fast switching is enabled in that a photonic crystal has a defect mode in its photonic band gap for photons with such an energy that electron transitions, especially in the form of single-electron tunneling processes between adjacent ligand-stabilized metal clusters, can be induced by the irradiation of corresponding photons due to at least one defect site.

Abstract: The invention relates to a microelectronic component with a component body determining the electronic properties of the component and functioning on the basis of a quantum wire or quantum point system. The the component body is formed of at least one, but in most cases a plurality of cluster molecules which adjoin one another, and the cluster molecules are formed of a metallic cluster nucleus and nonmetallic (insulating) ligand shell externally shielding and stabilizing the cluster nucleus. The cluster nucleus of the cluster molecules is formed of atoms of a transition metal, preferably silver (Ag), gold (Au), cobalt (Co), palladium (Pd), platinum (Pt), rhodium (Rh), Ruthenium (Ru).

Abstract: This invention relates to an electrophotographic recording material consisting of an electroconductive support material and a photoconductive double layer of organic materials which consists of a homogeneous, opaque, charge carrier producing dyestuff layer and of a transparent top layer of insulating materials with at least one charge transporting compound.

Abstract: This invention relates to an electrophotographic recording material consisting of an electroconductive support material and a photoconductive double layer of organic materials which consists of a homogeneous, opaque, charge carrier producing dyestuff layer and of a transparent top layer of insulating materials with at least one charge transporting compound.

Abstract: This invention relates to an electrophotographic recording material comprising an electrically conducting supporting material having thereon a photoconductive double layer of organic materials, said double layer being composed of a homogeneous, opaque, charge carrier-producing dyestuff layer and a transparent top layer of insulating material containing at least one charge-transporting compound, the transparent top layer comprising a binder and a charge-transporting aromatic compound with an extended .pi.-electron system which is substituted by at least one substituted amino group, and the dyestuff layer comprising a condensation product of an aromatic aldehyde and a compound carrying an active methylene group.