Abstract:
The invention relates to an illumination system comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing a portion of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light; wherein said at least one phosphor is a green-emitting cerium-activated lutetium-aluminum-garnet of general formula (Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12:CeaPrb wherein 0
Abstract:
The invention relates to a device for generating radiation by means of excimer discharge, equipped with an at least partly UV-transparent discharge vessel (1), the discharge chamber (2) of which is filled with a gas filling, with means for igniting and maintaining an excimer discharge (4, 5) in the discharge chamber and with a coating (3) comprising a light-emitting compound. The light-emitting compound has the following composition:(Ca1-x-2ySrx)Li2Si1-zGezO4:LnyMy,wherein Ln is a cation selected from the group Ce , Pr , Sm , Eu , Gd , Tb , Dy , Er , Tm and Yb , and M is a cation selected from the group Na , K and Rb ,0 £ x £ 0.1, 0.001 £ y £ 0.2 and 0 £ z £ 1. The coating (3) preferably comprises Ca1-2yLi2SiO4:PryNay with 0.001 £ y £ 0.2. A device with a coating (3) comprising Ca1-2yLi2SiO4:PryNay with 0.001 £ y £ 0.2 may be used for disinfection purposes.
Abstract translation:用于通过准分子放电产生辐射的装置技术领域本发明涉及一种用于通过准分子放电产生辐射的装置,该装置配备有至少部分紫外线透过的放电容器(1),其放电室(2)填充有气体填充物, 在放电室中保持准分子放电(4,5)并且用包含发光化合物的涂层(3)保持。 发光化合物具有以下组成:(Ca 1-x-2y Sr x)Li 2 Si 1-z Ge z O 4:LnyMy,其中Ln是选自Ce 3+,Pr 3+,Sm 3+, Eu 3+,Gd 3+,Tb 3+,Dy 3+,Er 3+,Tm 3+和Yb 3+,M是选自 组Na +,K +和Rb +,0≤x≤0.1,0.001≤y≤0.2和0≤z≤1。涂层(3)优选包含Ca1-2yLi2SiO4:PryNay和0.001% £0.2。 具有包含Ca1-2yLi2SiO4:PryNay并具有0.001£0.2的涂层(3)的装置可用于消毒目的。
Abstract:
The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b (MN)*c (SiN4/3)*d1 CeO3/2*d2 EuO*x SiO2*y AlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereofand M is a trivalent element chosen of the group of Al, B, Ga, Sc withd1> 10* d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.
Abstract:
In order to improve the color rendition of solid-state illumination devices, an illumination system comprising a radiation source capable of emitting primary radiation and a luminescent material comprising a blend of a first phosphor capable of converting the primary radiation into a broad-band emission in the yellow range of the electromagnetic spectrum and a second phosphor capable of converting the primary radiation into a multiple narrow-band emission in the red and green range of the electromagnetic spectrum is provided.
Abstract:
The invention relates to a low-pressure gas discharge lamp provided with a gas discharge vessel comprising a gas filling with a discharge-maintaining composition, wherein at least part of a wall of the discharge vessel is provided with a luminescent material comprising a first UV-B phosphor containing, in a host lattice, gadolinium(III) as an activator and praseodymium(III) as a sensitizer, which lowpressure gas discharge lamp is further provided with means for generating and maintaining a low-pressure gas discharge Such a lamp is particularly useful for narrow-band UV-B phototherapy. The invention also relates to a UV-B phosphor containing, in a host lattice, gadolinium(III) as an activator and praseodymium(III) as a sensitizer.