Nitride and oxy-nitride cerium based phosphor materials for solid-state lighting applications
a technology of cerium and phosphor materials, which is applied in the direction of discharge tube luminescnet screens, energy-saving lighting, sustainable buildings, etc., can solve the problem of reducing the energy of emission wavelengths
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[0040] In the following description of the preferred embodiment, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration a specific embodiment in which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the present invention.
[0041] Technical Disclosure
[0042] The subject of the present invention is the discovery of three new phosphor materials for application in white solid-state lighting based upon blue (InGaN) or UV (GaN, ZnO) LEDs. Hence, the invention covers the synthesis of yellow and blue to green emitting materials and their application as a phosphor alone or in combination with other phosphors for white LED realization. Two compositions of matter comprising Ce3+ doped compounds from the quaternary Ca—Al—Si—N system are reported to emit yellow photons under UV or blue excitation, and cerium doped Sr2SiO...
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