| 摘要 |
The present invention provides a phosphor, a lighting system and a white light emitting diode. The phosphor comprises a compound represented by the formula (1) and Eu as an activator. aM12O-bM2O-cM3O2 (1) wherein, in the formula (1), M1 is at least one selected from the group consisting of Li, Na, K, Rb and Cs, M2 is at least one selected from the group consisting of Ca, Sr, Ba, Mg and Zn, M3 is at least one selected from the group consisting of Si and Ge, 0.1≦̸a≦̸1.5, 0.8≦̸b≦̸1.2, 0.8≦̸c≦̸1.2, and when M1 is Li, M3 is Si, and a=b=c=1, then M2 is not Sr alone.
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