| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a luminescent material that produces a different emission from rare earth elements and is efficient in shifting the emission peak. <P>SOLUTION: The luminescent material for ultraviolet or visible light excitation contains a cupric silicate compound activated by at least one of Eu, Dy, Ce, Mn and Gd. The compound converts primary ultraviolet radiation in a wavelength range of 300 to 400 nm and/or primary blue light in a wavelength range of 380 to 500 nm generated from one or more elements mounted in a light emitting device into light in a visible spectral range. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
