| 摘要 |
PROBLEM TO BE SOLVED: To provide a single phosphor excited by a near-ultraviolet ray radiation source and capable of emitting white light without requiring a combination with some other phosphor and a light source including the phosphor.SOLUTION: The phosphor capable of absorbing a radiation having the first wavelength range of an electromagnetic spectrum to emit a radiation having the second wavelength range of the electromagnetic spectrum is a borophosphate activated by Euions and is expressed by the following general formula. ABaSrEuBPO(where, A is at least one of monovalent alkali metal ions selected from a group including Li, K and Na, 0<x≤0.1, 0<y<1.0 and (x+y)<1.0). |
