Nitridosilicate phosphor tunable light-emitting diodes by using UV and blue chips

摘要

The present disclosure provides a radiation device. The radiation device includes a first light emitting diode (LED) operable to emit light having a first central wavelength; a second LED configured adjacent the first LED and operable to emit light having a second central wavelength substantially less than the first central wavelength; and a luminescent material disposed on the first LED and the second LED. The luminescent material includes a strontium silicon nitride (SrSi₆N₈) doped by one of cerium (Ce³⁺) and cerium, lithium (Ce³⁺, Li⁺).