Photoluminescence properties of cerium oxide nanoparticles as a function of lanthanum content

Abstract

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Photoluminescence and photonic absorbance of Ce2(MoO4)3 nanocrystal synthesized by microwave–hydrothermal/solvothermal method

“…6g) characterized by PL spectroscopy excited by 345 nm excitation wavelength and related to the UV range [19] is detected at 488 nm (blue), in accordance with the previous report [24]. The PL emission around 500 nm is associated with charge diffusion from the Ce 4f level to the O 2p level [24,25]. Localization of the energy levels between Ce 4f and O 2p can lead to longer emission wavelength [24].…”

Ce1−x Sm x O2−x/2—A novel type of ceramic material for thermal barrier coatings

“…Furthermore, the main peak of Ce 0. [35], and the additional low intensity Raman bands around 250.65 and 375.22 cm 1 are usually assigned to the presence of extrinsic oxygen vacancies generated into the ceria lattice improving diffusion rate of bulk oxygen after samarium addition [36]. The micro-morphology of the Ce 1x Sm x O 2x/2 powders is displayed in Fig.…”

Relationship between morphology and structure of shape‐controlled CeO2 nanocrystals synthesized by microwave‐assisted hydrothermal method

“…CeO 2 is an important multifunctional material for a wide range of applications such as catalysts, phosphors, polishing materials etc. . In catalytic applications activity of ceria arises primarily from reversible Ce(IV)/Ce(III) transitions, coupled with extraction – insertion of oxygen from the lattice.…”