Design, luminescence properties and applications of Cr 3+ -doped ScTaO 4 : a broadband near-infrared phosphor.
Shan WangSu ZhangShuang LiuSonglin HanXiaodong LiChaowei WangChengyu LiPublished in: Dalton transactions (Cambridge, England : 2003) (2022)
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 Sc 1- x TaO 4 , 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.
Keyphrases
- light emitting
- electron microscopy
- quantum dots
- visible light
- energy transfer
- photodynamic therapy
- solid state
- drug release
- fluorescent probe
- high resolution
- fluorescence imaging
- sensitive detection
- highly efficient
- working memory
- molecular docking
- high throughput
- mass spectrometry
- circulating tumor cells
- computed tomography
- magnetic resonance imaging
- molecular dynamics simulations
- high speed
- water soluble