Spectral properties of luminescent materials
Fluorescence is photoluminescence, and under the action of optical radiation, fluorescent substances emit fluorescence with different wavelengths. Any fluorescent compound has two characteristic fluorescence spectra, namely excitation spectrum and emission spectrum. A fluorescence emission wavelength is selected to record the fluorescence emission intensity as a function of the excitation wavelength, and the fluorescence excitation spectrum is obtained. It reflects the relative efficiency of fluorescence caused by excitation light with different wavelengths. The excitation spectrum can identify the fluorescent substance,...

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