Figure 7
Raman spectra of 5% Er3+-doped (a) La2O2S and (b) La2O2SO4 calcined at 700–900 °C upon excitation of 532 nm laser.
Figure 7 | Scientific Reports
Raman spectra of 5% Er3+-doped (a) La2O2S and (b) La2O2SO4 calcined at 700–900 °C upon excitation of 532 nm laser.
