摘要:
Coating systems suitable for use in generating fluorescent visible light, and lamps provided with such coating (22) systems. The coating systems includes a phosphor-containing coating that contains at least a first phosphor that is predominantly excited by ultraviolet radiation of a first wavelength to emit visible light and absorbs but is less efficiently excited by ultraviolet radiation of a second wavelength. The coating system further includes a second phosphor that absorbs the ultraviolet radiation of the second wavelength and little if any of the ultraviolet radiation of the first wavelength.
摘要:
This invention is related to ABOS:M-based phosphors, e.g. phosphors that are based on modified CaZnOS. Furthermore, this invention is related to the use of these phosphors for converting radiation. This invention is also related to light sources that contain the inventive phosphor. An inventive phosphor shows the general formula ABOS:M, where A is at least one element selected from the group consisting of Ca, Mg, Sr, and Ba; B is at least one element selected from the group consisting of Zn and Mg; and M is at least one element selected from the group consisting of Mn 2+ , Cu 2+ , and Eu 2+ . Optionally, M can additionally contain one ore more elements selected from the group consisting of Mn 2+ , Cu 2+ , Cu + , Ag + , Pb 2+ , Sb 3+ , Sn 2+ , Bi 3- , Eu 2+ , Ce 3+ , Tb 3+ , and Pr 3+ as well as Li + , Na + , K + , and Rb + .
摘要:
The invention relates to an electroluminescent layered element (1) comprising at least one light-permeable substrate (2); a light-permeable surface electrode (3) applied to the substrate (3); a first layer (5) comprising inorganic electroluminescent particles (6) incorporated into an organic binding material, the organic binding material of the first layer (5) having at least approximately identical refractive properties to those of the light-permeable substrate (2); and a rear electrode (9), the transparent surface electrode (3) and the rear electrode (9) being provided to supply the voltage and to produce an electrical field which excites the particles (6) incorporated into the first layer (5) in such a way as to emit light. The aim of the invention is to provide a mechanically stable and permanently durable layered element (1) having very good optical properties, especially avoiding total reflection inside the first layer (5). To this end, the binding material is based on polyvinyl butyral (PVB) or ethylene vinyl acetate (EVA).
摘要:
A plasma display wherein all the charges are positive is disclosed which comprises a green phosphor which hardly adsorbs or reacts with water, carbon monoxide, a carbon dioxide gas or a hydrocarbon. A green phosphor layer is made of a green phosphor composed of at least one material selected among those represented by the general formula M1-a(Ga1-xAlx)2O4:Mna (wherein M is Zn, Mg, Ca or Sr); the general formula (Y1-a-yGda)(Ga1-xAlx)3(BO3)4:Tby; the general formula (Y1-a-yGda)(Ga1-xAlx)3(BO3)4:Cey, Tby; the general formula (Y1-a-yGda)BO3:Tby; or the general formula (Y1-a-yGda)3(Ga1-xAlx)5O12:Tby.
摘要:
A phosphor for a low voltage display device comprising a host and a metal salt or a metal oxide dispersed on the surface of the host shows an improved luminescence efficiency and can be prepared at a comparatively low temperature.
摘要:
Die Erfindung betrifft einen lumineszierenden Schirm mit einer Leuchtstoffzusammensetzung aus einem sulfid- und/oder selenidhaltige Leuchtstoff mit einer Beschichtung, die Molybdän(VI)-trioxid enthält. Bei solchen lumineszierenden Schirmen können die Vorteile der effizienten sulfid- und/oder selenidhaltigen Leuchtstoffe genutzt werden und die lumineszierenden Schirme bleiben lange Zeit hell und kontrastreich, weil die Beschichtung, die Molybdän(VI)- trioxid enthält, überraschenderweise als stabilisierender Schutzüberzug wirkt, der die durch niederenergetische Strahlung induzierten Korrosionsvorgänge in sulfid- und/oder selenidhaltigen Leuchtstoffen begrenzt.