Abstract
Luminescence spectra ofLa1−xPrxOCl(0.01 ≤ x ≤ 0.3) were recorded at liquid helium and room temperature. From these spectra, the energy level diagram of Pr3+ in LaOCl was deduced. The decay times of the Pr3+ emission in La1−xPrxOCl were measured using a high-resolution dye laser system. The linear concentration quenching and
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