2014
DOI: 10.1016/j.ceramint.2014.07.127
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Structural disorder-dependent upconversion in Er3+/Yb3+-doped calcium titanate

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Cited by 12 publications
(7 citation statements)
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References 30 publications
(37 reference statements)
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“…Within this configuration, the exploitation of incoming radiation not absorbed by the photocatalysts would be achieved, since the luminescent material could handle and transform the not-absorbed photons into appropriate energy ones, a process considered as a wise light handling [5]. The phenomenon of up-conversion (UC) is an anti-Stokes emission process that converts long-wavelength pump sources into short-wavelength emission [6]. So, considering an up-converting luminescent material, it would absorb low-energy radiation (i.e., on the near-infrared or visible range) and emit higher energy radiation (i.e., in the visible and/or UV).…”
Section: Introductionmentioning
confidence: 99%
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“…Within this configuration, the exploitation of incoming radiation not absorbed by the photocatalysts would be achieved, since the luminescent material could handle and transform the not-absorbed photons into appropriate energy ones, a process considered as a wise light handling [5]. The phenomenon of up-conversion (UC) is an anti-Stokes emission process that converts long-wavelength pump sources into short-wavelength emission [6]. So, considering an up-converting luminescent material, it would absorb low-energy radiation (i.e., on the near-infrared or visible range) and emit higher energy radiation (i.e., in the visible and/or UV).…”
Section: Introductionmentioning
confidence: 99%
“…However, Er 3+ doped materials are of special interest due to the strong luminescence in the visible region with transitions that can be enhanced by an adequate choice of host materials [5]. According to Eduardo et al the host materials play an important role in the photoluminescence (PL) emission [6].…”
Section: Introductionmentioning
confidence: 99%
“…Ademais, notam-se picos finos nos espectros de FL, os quais estão ligados à emissão FL intrínsecas dos íons terras-raras presentes, uma vez que possuem os orbitais f-f semipreenchidos, e, portanto, são responsáveis por estas emissões. 5,11,33 A 34,35 da emissão, na qual os dopantes podem diminuir a emissão de fótons, criando estados eletrônicos responsáveis pelo decaimento não-radiativo. Porém, os materiais dopados com 10 e 15% apresentaram o pico de maior intensidade na mesma região, sendo ela próxima de 450 nm.…”
Section: Resultsunclassified
“…Logo, pode-se relacionar que a maior contribuição para a intensidade FL é atribuída a ordem/desordem do material e não somente a quantidade de vacâncias presentes nesse, uma vez o material dopado com 20% apresenta a maior quantidade de defeitos, quando comparado aos materiais dopados a 15 e a 10%. 12,33,37…”
Section: Resultsunclassified
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