Fig. 1. Preparation process of Au film photonic crystal array.

Fig. 2. （a）Simulation of electric field strength of Au film without photonic crystal structure（b）Simulation of electric field strength of Au film with photonic crystal structure（c）SEM characterization of Au film photonic crystal structure sample.

Fig. 3. PL spectra and Puercell factor of Si ⁺ / Ni ⁺ ion co-implanted SOI nanodisk Au film sample and the uncovered sample as well as the simulated sample.

Fig. 4. The photonic band gap of the sample with the Au nanodisk-array photonic crystals which simulated by the FDTD software. The 3.6×10¹⁴-3.7×10¹⁴ Hz（810~830 nm）range corresponding to the solid black line is the photonic forbidden band，and the black dotted line corresponds to the luminous peak at 3.5×10¹⁴ Hz（857nm）.