PHOSPHOR, LED LIGHT-EMISSION ELEMENT, AND LIGHT SOURCE DEVICE

摘要

The present invention relates to a CaS-based phosphor, and provides a novel CaS-based phosphor with which chemical reactions can be inhibited even if said CaS-based phosphor is heated with a heterogeneous material. This phosphor includes: a crystalline parent material represented by the composition formula Ca 1-x Sr x S·yZnO (in the formula, 0 ‰¤ x < 1,0 < y ‰¤ 0.5), and a luminescent centre.