Blue emission spectrum of Ce3+:ZnO-B2O3-SiO2 optical glass

Annapurna, K.; Dwivedi, Ravindra Nath; Kundu, Prabir Kumar; Buddhudu, S.

doi:10.1016/j.matlet.2003.07.012

Cited by 48 publications

(14 citation statements)

References 17 publications

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“…Despite rare earth ions stabilize the trivalent state, as it has been stated before, cerium compounds usually exhibit the coexistence of Ce 3+ and Ce 4+ species because of its particular electronic configuration. [36,37] The electron donation ability of Ce(III) facilitates the excitation of an electron from the 4f to the 5d shell, showing characteristic broad bands in the UV region between 330 and 200 cm -1 , although the main absorption band is around 310 cm -1 . [38] By other hand, Ce(IV) favors charge transfer (CT) transitions from the host ligands to the rare earth ions.…”

Section: Resultsmentioning

confidence: 99%

Sol–Gel Synthesis of Tunable Cerium Titanate Materials

et al. 2008

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Cerium titanate structures present a high technological interest because of their optical and catalytic properties. This work reports the synthesis of these materials by a sol–gel methodology that allows mixed oxides with TiIV/CeIII, TiIV/CeIV or TiIV/CeIII–CeIV species to be obtained. Crystallization of CeO2–TiO2 mixed oxides and Ce2Ti2O7 pyrochlore phase was corroborated by XRD and Raman spectroscopy. Magnetic and EPR measurements were performed in order to clarify the oxidation state of the cerium ions in the system as a result of the easy oxidation of CeIII. The firing atmosphere is crucial for the CeIII/CeIV ratio, which is responsible for the different structure, but it also affects the colouration (yellow, green, brown). This methodology offers the possibility to modulate the Ce3+/Ce4+ content and particle sizes providing more ecological coloured pigments based on rare earth elements that could be interesting materials for advanced applications in catalysis.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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Section: Resultsmentioning

confidence: 99%

Sol–Gel Synthesis of Tunable Cerium Titanate Materials

et al. 2008

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“…Level 5d presents strong lattice interaction and the first dipole transition suffers a spectroscopic redshift when incorporated into a crystal, being shifted towards lower energy compared to the free ion 8 . Broad blue emission has been recorded around 489 nm in a host matrix of zinc borosilicate glass 9 . Low quantum efficiency in the luminescence process may happen for rare-earth ions incorporated in SnO 2 , which is generally attributed to the difference between radius and charge of doping ions and Sn 4+ [10] .…”

Section: +mentioning

confidence: 99%

Photo-Induced conductivity of heterojunction GaAs/Rare-Earth doped SnO2

et al. 2013

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“…O íon Ce 3+ apresenta confi guração eletrônica 4f 1 no estado fundamental e 5d 1 no estado excitado. Emissão no azul tem sido reportada em torno de 489 nm [8]. Diferenças no raio iônico de Ce 3+ e Sn 4+ torna difícil a incorporação em SnO 2, diminuindo a efi ciência quântica no processo de luminescência [9].…”

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