Thermoluminescence properties of gamma irradiated CaO: Sm3+ phosphor

Synthesis and luminescence properties of single‐component Ca5(PO4)3F:Dy3+, Eu3+ white‐emitting phosphors

“…The three strong peaks at 2θ = 25.9°, 31.9°, and 33.1° correspond to the (0 0 2), (2 1 1), and (3 0 0) crystal faces of Ca 5 (PO 4 ) 3 F structure, which indicates that the Ca 5 (PO 4 ) 3 F:Dy 3+ samples were prepared successfully by heating above 900°C. Moreover, some weak diffraction peaks of impurity phases were also observed at 2θ = 29.6°, 31.0° and 37.4°, which matched well with the crystal faces (3 0 0) and (0 2 10) of Ca 3 (PO 4 ) 2 structure and the crystal face (2 0 0) of CaO structure respectively. At low temperatures, such as 900°C, CaO is produced due to the decomposition of CaCO 3 .…”

Fabrication of Cu-MOF-Derived Cu/CuxO/C Bifunctional Materials for Light and Dark Catalytic Properties

“…The bands of Cu/Cu x O materials at 3127 cm –1 can be regarded as a stretching vibration of O–H . The peaks at 1401 cm –1 for Cu/Cu x O materials are attributed to the stretching of C–O . These additional functional groups may provide more catalytically active sites.…”

Enhanced luminescence performance of CaO:Ce3+,Li+,F− phosphor and its phosphor-in-glass based high-power warm LED properties

“…[10][11][12] Moreover, CaO can be doped with various rare earth ions to obtain a series of phosphor-materials with special properties harvesting of photoluminescence, electron degradation, thermoluminescence, long persistence, energy transfer. [13][14][15][16][17][18] Among CaOphosphors, Ce 3+ -doped CaO (CaO:Ce 3+ ) with simple chemical composition, suitable excitation and emission spectra, is a promising yellow-emitting phosphor for blue light excited wLEDs. In addition, the emission spectrum of CaO:Ce 3+ owns more red spectral component than the commercialized YAG:Ce 3+ , making it more appropriate for warm-wLEDs.…”