Luminescence Spectra of Mn 2 + Doped in
نویسنده
چکیده
Luminescence data for 6 manganese doped langbeinites, Aj B2 + (S04)3 , are reported. They are consistent with octahedral symmetry of the impurity center (substitutional in B site), although for the host lattice the B site is known to show three-fold axial (distorted octahedral) symmetry only. In accordance with previous conclusions from EPR data the luminescence parameters indicate structural relaxation in comparison to undoped langbeinites.
منابع مشابه
The Structural, Morphological, Optical and Photoluminescence Studies of Mn2+ Doped CdS/Zn3(PO4)2 Nanocomposites
The present study used a hydrothermal technique to synthesize undoped and Mn 2+ doped CdS/Zn 3 (PO 4 ) 2 semiconducting nanocomposite materials. Powder X-ray diffraction, scanning electron microscopy, UV-Vis diffuse reflectance spectrometer, Fourier transform- Infrared Spectroscopy-FT-IR, and photoluminescence techniques were employed to study structural, optical, and luminescence propertie...
متن کاملLuminescence Properties of Oxyfluoride Glass and Glass Ceramic Doped with Y3 + Ions
Oxyfluoride glass ceramics containing CaF2nano-crystals doped with Y3+ ions were prepared by one-step crystallization of SiO2- Al2O3- CaO- CaF2 glasses at different temperatures. X- ray diffraction (XRD) results have revealed that CaF2 was the only precipitated crystalline phase in glass ceramic samples. According to the XRD results, a glass ceramic was selected as the best sample in order to ...
متن کاملEnhanced luminescence of Er+3-doped Zinc-Lead-Phosphate Glass embedded SnO2 nanoparticles
Introduction of the nanoparticles in the bulk glass received a large interest due to their versatile application. The composition of Er+3-doped Zinc-Lead-Phosphate glass samples are prepared by melt-quenching technique. The structural and optical properties of phosphate glass have been examined by x-ray diffraction, fie...
متن کاملLuminescence Properties of Eu and Mn Doped Sr2MgSiO5 Phosphors
Eu ions doped Sr2MgSiO5 phosphors, and EuMn ions-doped Sr2MgSiO5 phosphors were prepared via high-temperature solid state reaction method and sol-gel process, respectively. Luminescent mechanism and characteristics of all samples were studied. The results showed that lattice structure of Eu ion-doped Sr2MgSiO5 samples was pyramidal system. The influence of flux on luminescence properties of Eu ...
متن کاملRatiometric temperature imaging using environment-insensitive luminescence of Mn-doped core-shell nanocrystals.
We report a ratiometric temperature imaging method based on Mn luminescence from Mn-doped CdS-ZnS nanocrystals (NCs) with controlled doping location, which is designed to exhibit strong temperature dependence of the spectral lineshape while being insensitive to the surrounding chemical environment. Ratiometric thermometry on the Mn luminescence spectrum was performed by using Mn-doped CdS-ZnS c...
متن کامل