Design, luminescence properties and applications of Cr3+-doped ScTaO4: a broadband near-infrared phosphor. Issue 42 (12th October 2022)

• Record Type: Journal Article
• Authors: Wang, Shan; Zhang, Su; Liu, Shuang; Han, Songlin; Li, Xiaodong; Wang, Chaowei; Li, Chengyu
• Is Part Of: Dalton transactions. Volume 51:Issue 42(2022)
• Page Start: 16325
• Page End: 16335
• Publication Date: 2022-10-12
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2dt02671f
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A new broadband NIR phosphor, ScTaO4 :Cr 3+, has been synthesized, and the NIR pc-LED devices were prepared. Abstract : Near-infrared (NIR) emitting LED devices have broad applications. Using a visible light LED chip to excite Cr 3+ -activated phosphors to obtain NIR light has attracted extensive attention. In this study, a near-infrared luminescent material, Cr 3+ -doped Sc1− x TaO4, was synthesized by the element substitution method. It demonstrated a long emission wavelength (940 nm) and wide full width at half maximum (FWHM) (186 nm). The morphology, structure and photoluminescence of the samples were investigated using X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL) spectroscopy techniques. Moreover, the relationship between the NIR emission properties of Cr 3+ and the substituted ions in the crystal matrix was studied. Based on this material, we fabricated near-infrared LED devices, which exhibited good near-infrared luminescence properties.