Concentration dependence of the Bi3+ luminescence in LnPO4 (Ln=Y3+, Lu3+)

Srivastava, A.M.; Camardello, S.J.

doi:10.1016/j.optmat.2014.11.011

Cited by 46 publications

(53 citation statements)

References 11 publications

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“…The 1 S 0 → 3 P 0 and 1 S 0 → 3 P 2 are spin-forbidden, although the transition to the 3 P 2 can be induced by coupling with unsymmetrical lattice vibrational modes. 2 As a result of spin-orbit coupling and mixing with the 1 P 1 state, the 1 S 0 → 3 P 1 transition becomes allowed. The 1 S 0 → 1 P 1 is a spin allowed transition.…”

Section: Introductionmentioning

confidence: 99%

The Bi 3+ 6s and 6p electron binding energies in relation to the chemical environment of inorganic compounds

Awater

Dorenbos

2017

Journal of Luminescence

133

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Section: Introductionmentioning

confidence: 99%

The Bi 3+ 6s and 6p electron binding energies in relation to the chemical environment of inorganic compounds

Awater

Dorenbos

2017

Journal of Luminescence

133

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“…The excitation spectra (dotted) show which energies give the most emission intensity at 23,700 cm -1 and 12,800 cm -1 . The excitation spectra are attributed to 1 S0 → 3 P0 and 1 S0 → 3 P1 and the emission spectra are attributed to 3 P1 → 1 S0 [327]. The strongly forbidden transition 3 P0 → 1 S0 [328] is not observed in the spectra due to the samples being measured at RT.…”

Section: Figure 86 Excitation (Dotted) and Emission (Solid) Spectra Omentioning

confidence: 94%

“…at 40,000 cm -1 excitation the emission at 25,100 cm -1 is in the order of 80 counts. The excitation spectra are attributed to 1 S0 → 3 P0 and 1 S0 → 3 P1 and the emission spectra are attributed to 3 P1 → 1 S0 [327].…”

Section: Bi2o3 -Borosilicate Glassesmentioning

confidence: 97%

Effects of d0 and s2 cations on optical properties of silicate glasses

Allsopp¹

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In partial fulfilment of its requirements for The Degree of Doctor of Philosophy 2 Declaration I hereby declare, that the thesis entitled 'Effects of d 0 and s 2 cations on optical properties of silicate glasses' is a result of my original work and investigation. None of the results presented in the manuscript have been lifted from any other sources and legitimate references are presented where necessary. Name:Signature:The copyright of this thesis rests with the author and no quotations from it or information derived from it may be published without prior written consent of the author. 3 Published work and conferences Aspects of the work described in the thesis were published in:• Optical and structural properties of d 0 ion doped silicate glasses for photovoltaic applications. B.

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“…Dentre as vantagens de se utilizar o íon Bi 3+ , cabe maior destaque o fato deste íon possuir também propriedades espectroscópicas interessantes que possibilitam sua atuação como espécie emissora e/ou sensibilizadora, podendo transferir energia aos íons TR 3+ [191]- [194]. O íon Bi 3+ livre apresenta configuração eletrônica 6s 2 , com estado fundamental 1 S0 e estados excitados 3 P0, [200], além de apresentar também um grande deslocamento Stokes [201], [202].…”

Section: Rv (Figura 120)unclassified

“…Por outro lado, a transição 1 S0 → 3 P1 proibida por spin (S ≠ 0), que gera a chamada banda A é permitida devido a relaxação causada pelo acoplamento spinórbita com o estado 1 P1. No caso da banda B atribuída à transição 1 S0 → 3 P2 proibida por spin pode ser relaxada por determinados modos vibracionais da estrutura dos materiais, enquanto a transição 1 S0 → 3 P0 possui menor energia e é fortemente proibida por spin, porém pode atuar como armadilha óptica em baixa temperatura[194]-[197].Deste modo, em temperatura ambiente, o estado 3 P1 é o principal responsável pela emissão do íon Bi 3+ , que é conhecida por variar consideravelmente, podendo ser observadas em larga região espectral, desde a região do UV até a região vermelha do espectro visível[198]-…”

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Sintonização de cores de emissão fotoluminescente da rede de coordenação [Bi(HPyr)] dopada com íons TR<sup>3+</sup>

Cunha¹

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Sintonização de cores de emissão fotoluminescente da rede de coordenação [Bi(HPyr)] dopada com íons TR 3+ Versão corrigida da Tese conforme Resolução CoPGr 5890 O original se encontra disponível na Secretaria de Pós-Graduação do IQ-USP São Paulo Data do Depósito na SPG: 08/11/2018 7 CÉSAR DOS SANTOS CUNHA Sintonização de cores de emissão fotoluminescente da rede de coordenação [Bi(HPyr)] dopada com íons TR 3+ Tese apresentada ao ABSTRACT Cunha, C.S. Photoluminescent emission color tuning of the coordination network [Bi(HPyr)] doped with RE 3+ ions. 2018. 200p. PhD Thesis -Graduate Program in Chemistry. The coordination network consisting of trivalent bismuth ions and pyromellitic acid (H4Pyr), [Bi(HPyr)], was successfully applied as host matrix for in situ incorporation of the trivalent rare earth ions RE 3+ : Sm 3+ , Eu 3+ , Tb 3+ and Dy 3+ . The high-throughput methods for hydrothermal synthesis allowed to prepare and study phase purity and crystallinity of sample series, accelerating and facilitating the comparison between the synthesis parameters. Infrared absorption spectroscopy, elemental and thermogravimetric analysis, scanning electron microscopy and energy-dispersive X-ray spectroscopy, as well as powder X-ray diffraction and the Le Bail refinement of the compounds indicated that doping did not affect the structure, crystallinity, morphology and thermal stability of the matrix. The study of the spectroscopic luminescence properties of the nondoped and doped [Bi(HPyr)] allowed the investigation of the sensitization processes of dopant RE 3+ ions. The characteristic spectroscopic properties of the Eu 3+ ion were used to study the incorporation site and coordination environment of the dopant by the calculation of the experimental intensity parameters Ωλ (λ: 2 and 4), besides the intrinsic quantum yield ( ) of the Eu 3+ single-doped [Bi(HPyr)]. Straightforward emission color tuning by changing the relative concentrations of the dopant ions is possible and has been studied for the systems double-doped with Tb 3+ :Eu 3+ , Tb 3+ :Sm 3+ , Dy 3+ :Eu 3+ and Dy 3+ :Sm 3+ ions. The Dy-containing systems show different shades of white emission and a wide range of correlated color temperatures (CCT -2500 to 7500 K), hence being a promising candidate for the development of single-phase white light emitting devices.

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Concentration dependence of the Bi3+ luminescence in LnPO4 (Ln=Y3+, Lu3+)

Cited by 46 publications

References 11 publications

The Bi 3+ 6s and 6p electron binding energies in relation to the chemical environment of inorganic compounds

The Bi 3+ 6s and 6p electron binding energies in relation to the chemical environment of inorganic compounds

Effects of d0 and s2 cations on optical properties of silicate glasses

Sintonização de cores de emissão fotoluminescente da rede de coordenação [Bi(HPyr)] dopada com íons TR<sup>3+</sup>

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