A white color or neutral color LED having an n-type ZnSe single crystal substrate doped with I, Cl, Br, Al, Ga or In as SA-emission centers and an epitaxial film structure including a ZnSe, ZnCdSe or ZnSeTe active layer and a pn-junction. The active layer emits blue or bluegreen light. The SA-emission...http://www.google.es/patents/US6337536?utm_source=gb-gplus-sharePatente US6337536 - White color light emitting diode and neutral color light emitting diode
White color light emitting diode and neutral color light emitting diode
