Optimized structural and optical behavior of Dy3+ ions doped SrS nano-powders for thin film fabrication

Abstract

Undoped and Dy[Formula: see text]-doped SrS nano-powders were synthesized by a solid-state diffusion method (SSDM). The nano-powders are then examined by the use of characterization tools as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM) including selected area electron diffraction (SAED). The emission spectra of SrS: Dy[Formula: see text] powders are composed of a broadband and the characteristic emission of Dy[Formula: see text] peaking at 482[Formula: see text]nm (blue region), 581[Formula: see text]nm (yellow region), 676[Formula: see text]nm (light red region) and 750[Formula: see text]nm (dark red region) bands corresponding to the transitions of 4F[Formula: see text]-6H[Formula: see text], 4F[Formula: see text]-6H[Formula: see text], 4F[Formula: see text]-6H[Formula: see text] and 4F[Formula: see text]-6H[Formula: see text], respectively. The resultant nano-powders can be used to fabricate thin films for the applications of efficient optoelectronic devices.