Fig. 1. (a), (b) IR and (c), (d) UV-Vis reflectance spectra of samples [Inset in (c) is fluorescence image of sample 0^# examined with DiamondView^TM]

Fig. 2. Raman spectra of typical samples. (a)-(c): Raman spectra of sample 1^# with 405, 532, and 785 nm laser excitation, respectively; (d)-(f): Raman spectra of typical samples with 405 nm laser excitation

Fig. 3. Raman spectra of typical samples with (a), (b) 532 nm and (c), (d) 785 nm laser excitation, respectively

Fig. 4. PL spectra of sample 0^# under (a), (b) 405 nm and (c), (d) 532 nm laser excitation, respectively