Photoacoustic Spectroscopy of BaYSiO:Ce Phosphor with Different Doping Concentrations

Photoacoustic (PA) spectroscopy was used to study the properties of BaYSiO:Ce phosphorous material with various doping concentrations. The PA amplitude and phase spectra, UV-vis absorption spectra, and excitation and emission spectra of BaYSiO:xCe () mol%) were measured, and the influence of different doping concentrations on the spectral characteristics was analyzed. Moreover, by combining the PA amplitude and phase spectra measurements, a new method to characterize the relative luminescence quantum efficiency of phosphorous materials was proposed. The feasibility of this method was further demonstrated by fluorescence emission spectra measurements.