In Depth Analysis on the Excitation Spectrum of SrS: Eu<sup>2+</sup>, Dy<sup>3+</sup>

Abstract

The long persistent phosphor SrS: Eu2+, Dy3+ was prepared by hydrothermal method. The crystalline structure was characterized by using X-ray diffraction (XRD). The experimental excitation spectrum was carried out with Flurolog-3 fluorescent spectrometer. The results show that there are seven sharp sub-peaks on the wide band spectrum. This paper focuses on the origin of the seven peaks. Rhodamine B standard solution was used to confirmed that these peaks correspond to the light source (Xe lamp) emission in Flurolog-3 fluorescent spectrometer. The excitation spectrum of Eu2+ in SrS: Eu2+, Dy3+ was corrected with Rhodamine B. It was found that the corrected spectrum was quite different from the experimental spectrum.