根据光谱的分布特征，可以分为线状光谱、 带状光谱、连续光谱。 B 8s712-9 5D0-FJ 2 3 8S12 6GJ 5D1→7F C.T, Eu3+-F 8S72→DJ 01 3 出的 550 600 650 700 160 200 240 280 Wavelength(nm) Wavelength(nm) Fig.3.(A)Emission spectra of LiGdF:Eu3+(0.5 mol%)upon excitation in the 61,levels of Gd3+ at 273 nm (violet line)and upon excitation in the 5G,levels of Gd3+at 202 nm(red line),both at 300 K.The spectra are scaled on the 5DFemission intensity.(B)Excitation spectra of LiGdF:Eu3+(0.5 mol%)monitoring the'5D,7F>emission of Eu3+at 554 nm (violet line)and the 5Do-7F2 emission at 614 nm (red [ine),both at 300 K.The spectra are scaled on theexcitation intensity.• 根据光谱的分布特征，可以分为线状光谱、 带状光谱、连续光谱