2015
DOI: 10.1016/j.optmat.2015.07.030
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Influence of pH and europium concentration on the luminescent and morphological properties of Y2O3 powders

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Cited by 9 publications
(5 citation statements)
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“…This lower intensity of the CTB with respect to the transition 5 L 6 ← 7 F 0 was due to the lack of oxygen linked to La 2 O 3 and to the weak interaction between the Eu 3+ and O 2 - orbitals [ 42 ]. Even at high concentrations of Eu, no displacement of CTB was observed, which suggests that the crystalline environment around the Eu ions in the La 2 O 3 :Eu 3+ aerogels was not substantially affected [ 42 ], since the CTB is normally displaced toward longer wavelengths due to changes in the crystalline field around the Eu dopant [ 43 ]. The electric dipole 5 L 6 ← 7 F 0 transition is the strongest transition in the excitation spectrum of the Eu 3+ compounds, except when a 7 F 6 ← 7 F 0 transition in the near infrared region is observed [ 44 ].…”
Section: Resultsmentioning
confidence: 99%
See 2 more Smart Citations

A New Ultrafine Luminescent La2O3:Eu3+ Aerogel

García Ramírez,
García Murillo,
Carrillo Romo
et al. 2023
Gels
“…This lower intensity of the CTB with respect to the transition 5 L 6 ← 7 F 0 was due to the lack of oxygen linked to La 2 O 3 and to the weak interaction between the Eu 3+ and O 2 - orbitals [ 42 ]. Even at high concentrations of Eu, no displacement of CTB was observed, which suggests that the crystalline environment around the Eu ions in the La 2 O 3 :Eu 3+ aerogels was not substantially affected [ 42 ], since the CTB is normally displaced toward longer wavelengths due to changes in the crystalline field around the Eu dopant [ 43 ]. The electric dipole 5 L 6 ← 7 F 0 transition is the strongest transition in the excitation spectrum of the Eu 3+ compounds, except when a 7 F 6 ← 7 F 0 transition in the near infrared region is observed [ 44 ].…”
Section: Resultsmentioning
confidence: 99%
“…It is worth noting that the transition 5 D 0 → 7 F 4 in yttria aerogels is particularly strong and not split [ 41 ]. The 5 D 1 ← 7 F 0 transition is a magnetic dipole transition, while the 5 D 2 ← 7 F 0 transition is a hypersensitive electric dipole transition (∆J = 2) [ 43 ].…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation

A New Ultrafine Luminescent La2O3:Eu3+ Aerogel

García Ramírez,
García Murillo,
Carrillo Romo
et al. 2023
Gels
“…В тех же условиях синтезировали оксигидроксид иттрия без допанта (обозначен Y). Мольные концентрации допантов составили 2,97, 13,8, 25,2 и 34,8 % мол., что близко к значениям, при которых, согласно работе [20], допированные европием образцы оксида иттрия обладают максимальной люминесценцией. В полученный раствор вводили гидролитический агент до рН 9,0.…”
Section: экспериментальная частьunclassified
“…Образцы имеют визуально белый цвет, поэтому все линии лежат выше 100 %, что свидетельствует о люминесценции. Судя по графикам, образцы люминесцируют с максимумом около 300 нм, что несколько выше, чем в аналогичных образцах, полученных гидротермальным методом [20]. Максимум несколько смещается в зависимости от содержания допанта, особенно в образцах, содержащих неодим.…”
Section: обсуждение результатовunclassified