Improved morphology and optimized luminescence of Eu3+-doped La2Ce2O7 composite nanopowders by surfactant-assisted solution combustion synthesis

Blue-light excitable La2Ce2O7:Eu3+ red phosphors for white light-emitting diodes

“…When only urea is used in the self-rising process, a mixed phase of CeO2 and La2O3 is observed, even after the sintering process. When urea/glycine mixture is used, however, the XRD pattern corresponds to the previous reported La2Ce2O7 structure [21], with the main diffraction peaks at 28.1, 32.6, 46.6, 55.2, 57.9, 67.9 and 75.0 o indexed to the (111), ( 200), ( 220), (311), ( 222), (400) and (331) crystallographic planes, respectively. The La2Ce2O7 composite has a cubic fluorite structure, which is almost the same as CeO2 except that of lattice parameter.…”

“…Moreover, Eu 3+ -doped CeO2La2O3 composites can overcome some of the above mentioned limitations of CeO2:Eu materials and the luminescence properties of Eu-doped La2Ce2O7 have been seldom reported [21]. In order to develop a green and eco-friendly preparation method for blue-light excitable Eu 3+ -based red phosphors, Eu 3+ -doped CeO2La2O3 phosphors, La2Ce2xO7x/2:xEu (x=0.10.9), were prepared in this work by a hydrothermal self-rising process assisted with mixed urea/glycine as leavening agent.…”

Relationship between the Structure and Transport Properties in the Ce1–xLaxO2–x/2 System

“…La-doped CeO 2 materials are of great interest because of their numerous applications in different fields, including catalysis, − photoluminescence, , thermal barrier coatings, and electrochemistry. − In particular, these materials are widely used in high-temperature electrochemical devices for energy production and storage and as membranes for hydrogen production and solid oxide fuel cells because of their remarkable mixed ionic–electronic conductivity. − …”

Enhancing the Catalytic Activity of Lanthanum-Ceria Fluorite for Methane Conversion in SOFC

“…For the LCO samples synthesized in this study, we considered a fluorite-type crystalline structure, since the diffraction peaks referring to pyrochlore superstructure arrangement, located between 30 o and 45 o , were not detected. (11,12) After obtaining the single-phase LCO, we incorporated different Ca 2+ content substituting La 3+ in the LCO structure. Solid-solution samples Ca-LCO presented a diffraction pattern similar to LCO (Fig.…”