Abstract: Disclosed herein are technologies utilizing sacrificial material layers for producing and transferring wavelength converters for light emitting devices via lift-off. In some embodiments the technologies utilize a precursor in the form of a substrate having a sacrificial layer formed thereon. The sacrificial layer may possess one or more properties that allow it to survive processing of a conversion layer formed thereon, and to facilitate removal of the substrate via a lift off process. In some embodiments the sacrificial layer may be configured to survive relatively high temperature processing without substantially affecting the performance of the conversion layer, and to facilitate removal of the substrate via laser lift off.

Abstract: Structures for transitioning between two layers of differing lattice parameters are disclosed. In some embodiments, the structures are in the form of a superlattice that serves as a strain relieving transition between two layers of differing lattice parameters. By controlling the properties of the superlattice, the superlattice can exhibit desirable properties such as transparency to light and lattice matching to one of the two layers of differing lattice parameters. Optoelectronic devices such as light emitting diodes including such superlattices are also disclosed.

Abstract: Structures for transitioning between two layers of differing lattice parameters are disclosed. In some embodiments, the structures are in the form of a superlattice that serves as a strain relieving transition between two layers of differing lattice parameters. By controlling the properties of the superlattice, the superlattice can exhibit desirable properties such as transparency to light and lattice matching to one of the two layers of differing lattice parameters. Optoelectronic devices such as light emitting diodes including such superlattices are also disclosed.

Abstract: A light emitting diode (LED) includes a p-n junction containing luminescent activator ions. The visible emission from the activator ions preferably complementing the band edge emission of the LED in order to produce an overall white emission from the LED. In a preferred embodiment, the LED has double heterojunction structure having a semiconductor active layer between two confinement layers. The semiconductor active layer includes activator ions preferably selected from among Eu3+, Tb3+, Dy3+, Pr3+, Tm3+, and Mn2+. The electron-hole pairs trapped within the active layer sensitize the activator ions, causing the activator ions to emit light.

Abstract: A light emitting diode (LED) includes a p-n junction containing luminescent activator ions. The visible emission from the activator ions preferably complementing the band edge emission of the LED in order to produce an overall white emission from the LED. In a preferred embodiment, the LED has double heterojunction structure having a semiconductor active layer between two confinement layers. The semiconductor active layer includes activator ions preferably selected from among Eu3+, Tb3+, Dy3+, Pr3+, Tm3+, and Mn2+. The electron-hole pairs trapped within the active layer sensitize the activator ions, causing the activator ions to emit light.

Abstract: A ceramic discharge vessel is provided wherein the vessel comprises a hollow body for enclosing a discharge and the hollow body is made of a polycrystalline dysprosium oxide containing a luminescent dopant that emits one or more visible light wavelengths when stimulated by radiation generated by the discharge. Preferably, the polycrystalline dysprosium oxide has been doped with one or more of europium, cerium, or terbium in an amount from about 0.1 to about 10 percent by weight on an oxide basis.

Abstract: A blue-enriched incandescent lamp having on the interior surface of its light transmissive glass envelope a coating in accordance with an aspect of the invention. The coating contains a phosphor that is energized by the ultraviolet/violet emission (<420 nm) from the hot filament causing it to emit radiation in the range of 420 to 490 nm. In a preferred embodiment of the invention, the coating contains a europium-activated barium magnesium aluminate phosphor and a blue pigment.

Abstract: A europium-activated barium aluminate phosphor is described wherein the phosphor is doped with tetravalent ions of Hf, Zr, or Si. Preferably, the phosphor is represented by (Ba1?xEux)MgAl10O17:(Hf,Zr,Si)y where 0.05?x?0.25 and 0<y?0.05. The tetravalent dopant ions are shown to enhance the stability of the phosphor in UV/VUV applications.

Abstract: A protective coating for aluminate phosphors is described. The protective coating comprises at least a partial spinel coating having the general formula Mg1-xAl2(1-y)O4-3y-x, where 0≦x<1 and 0≦y<1. The coating is applied by an aqueous solution method which may be compatible with conventional fluorescent lamp manufacturing techniques.

Abstract: A protective coating for aluminate phosphors is described. The protective coating comprises at least a partial spinel coating having the general formula Mg1-xAl2(1-y)O4-3y-x, where 0≦x<1 and 0≦y<1. The coating is applied by an aqueous solution method which may be compatible with conventional fluorescent lamp manufacturing techniques.

Abstract: A phosphor coating for gas discharge lamps is provided. The phosphor coating contains a nano-size phosphor which promotes adherence of the primary phosphor to the glass envelope. The phosphor coating is applied to the interior surface of the gas discharge lamp using an aqueous suspension containing the primary phosphor, the nano-size phosphor, and an organic binder.

Abstract: An incandescent lamp is provided with a phosphor coating on its lamp envelope. The phosphor coating alters the spectral distribution of radiation emitted by the lamp and acts as a diffuser. In one embodiment, the phosphor coating absorbs radiation at wavelengths below 500 nanometers and emits radiation at wavelengths above 500 nanometers to provide an improved bugfoiler lamp. In another embodiment, the phosphor coating absorbs radiation in the ultraviolet, violet and blue wavelength range and emits radiation at longer wavelengths that more effectively stimulate the human eye.