The excitation spectrum is a broad band and the main peak is at 402 nm,the secondary peak is at 415 nm,its excitation spectrum has a obvious red shift in comparison with traditional solid reaction and sol-gel method.

• 激发光谱为一宽带,最大激发峰位于402 nm处,次激发峰位于415 nm处,与高温固相法和溶胶-凝胶法相比,出现了明显的红移现象;