Yellow-to-orange emission from Bi^2+-doped RF_2 (R = Ca and Sr) phosphors

Cao, Renping; Zhang, Fangteng; Liao, Chenxing; Qiu, Jianrong

doi:10.1364/oe.21.015728

Cited by 32 publications

(14 citation statements)

References 24 publications

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“…In 1994, the red emission of Bi-doped SrB 4 O 7 was explained by Blasse et al [105] as due to the divalent Bi 2+ based on the similarity of luminescence characteristics with isoelectronic Pb + [209] and Tl 0 [210,211] centers. In the same year, Bi 2+ luminescence was briefly reported in alkali earth sulfates [212], followed by reports dealing with Bi 2+ in crystalline hosts of Me 2+ BPO 5 (Me = Ca, Sr, Ba) [213], BaB 8 O 13 [214], BaSO 4 [215], Sr 2 P 2 O 7 [216], Ba 2 P 2 O 7 [106], MeF 2 (Me = Ca, Sr) [217], and CaAl 12 O 19 [218].…”

Section: The Bi 2+ Bi + and Bi 0 Emission Centersmentioning

confidence: 99%

Luminescence Spectroscopy and Origin of Luminescence Centers in Bi-Doped Materials

et al. 2020

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Bi-doped compounds recently became the subject of an extensive research due to their possible applications as scintillator and phosphor materials. The oxides co-doped with Bi3+ and trivalent rare-earth ions were proposed as prospective phosphors for white light-emitting diodes and quantum cutting down-converting materials applicable for enhancement of silicon solar cells. Luminescence characteristics of different Bi3+-doped materials were found to be strongly different and ascribed to electronic transitions from the excited levels of a Bi3+ ion to its ground state, charge-transfer transitions, Bi3+ dimers or clusters, radiative decay of Bi3+-related localized or trapped excitons, etc. In this review, we compare the characteristics of the Bi3+-related luminescence in various compounds; discuss the possible origin of the corresponding luminescence centers as well as the processes resulting in their luminescence; consider the phenomenological models proposed to describe the excited-state dynamics of the Bi3+-related centers and determine the structure and parameters of their relaxed excited states; address an influence of different interactions (e.g., spin-orbit, electron-phonon, hyperfine) as well as the Bi3+ ion charge and volume compensating defects on the luminescence characteristics. The Bi-related luminescence arising from lower charge states (namely, Bi2+, Bi+, Bi0) is also reviewed.

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Section: The Bi 2+ Bi + and Bi 0 Emission Centersmentioning

confidence: 99%

Luminescence Spectroscopy and Origin of Luminescence Centers in Bi-Doped Materials

et al. 2020

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“…The emission changed mainly in the blue region to the orange red region with an increase in beam voltage. The blue and orange emissions were reported by many authors as a characteristic emission from Bi 3+ and Bi 2+ respectively [57,58]. A simplified energy level diagram, with the respected obtained color images, from Reference [48], is given in Figure 14.…”

Section: Resultsmentioning

confidence: 96%

Surface Sensitive Techniques for Advanced Characterization of Luminescent Materials

Swart

2017

Materials

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The important role of surface sensitive characterization techniques such as Auger electron spectroscopy (AES), X-ray photo electron spectroscopy (XPS), time of flight scanning ion mass spectrometry (TOF-SIMS) and High resolution transmission electron microscopy (HRTEM) for the characterization of different phosphor materials is discussed in this short review by giving selective examples from previous obtained results. AES is used to monitor surface reactions during electron bombardment and also to determine the elemental composition of the surfaces of the materials, while XPS and TOF-SIMS are used for determining the surface chemical composition and valence state of the dopants. The role of XPS to determine the presence of defects in the phosphor matrix is also stated with the different examples. The role of HRTEM in combination with Energy dispersive spectroscopy (EDS) for nanoparticle characterization is also pointed out.

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“…The Bi 2+ ion has recently motivated a new line of approach in the search of new red phosphors for energy efficient solid-state lighting devices. [1][2][3][4][5][6][7] This line finds its grounds on the earlier work of Blasse et al, 8 who considered the rarely reported divalent bismuth species to be responsible for the red-orange luminescence of bismuth activated SrB 4 O 7 . By extension, Bi 2+ was assumed to cause the red luminescence of bismuth activated alkaline earth sulfates already reported in 1886 by Lecoq de Boisbaudran 9 and of bismuth activated phosphates reported in 1949 by Kro ¨ger et al 10 (cf.…”

Section: Introductionmentioning

confidence: 77%

Blue absorption and red emission of Bi²⁺ in solids: strongly spin–orbit coupled 6p levels in low symmetry fields

Seijo

Barandiarán

2014

Phys. Chem. Chem. Phys.

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Wave function embedded cluster ab initio calculations on a (BiO8)(14-) cluster under the effects of a high symmetry Oh confinement potential are used to study the energies of the (2)P1/2, (2)P3/2(1), and (2)P3/2(2) spin-orbit coupling levels of the 6s(2)6p configuration of Bi(2+) in Oh, D4h, D2h, D4, D2d, D2, S4, C4v, C4, C3v, C2v, C2, Cs, and C1 fields, together with the (2)P1/2→(2)P3/2(1) and (2)P1/2→(2)P3/2(2) absorption oscillator strengths and the (2)P3/2(1) radiative lifetime. These levels are responsible for the blue absorptions and the red-orange emissions produced when Bi(2+) is doped in borates, phosphates, sulphates, and other hosts. It is found that the splitting of (2)P3/2 is mainly due to the tetragonal D4h and orthorhombic D2h components of the actual field. It is enhanced by Bi going towards two or four ligands. The intensities of the (2)P1/2→(2)P3/2(1) and (2)P1/2→(2)P3/2(2) absorptions are mostly induced by the Bi displacements and by tetragonal scalenoidal D2d fields. The most favorable fields for a large splitting of the (2)P3/2 level that can drive a red shift of the (2)P3/2(1) →(2)P1/2 emission are the C2v and Cs fields resulting from the combination of D2h orthorhombic fields and Bi approaching two or four ligands on the main orthorhombic planes.

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Yellow-to-orange emission from Bi^2+-doped RF_2 (R = Ca and Sr) phosphors

Cited by 32 publications

References 24 publications

Luminescence Spectroscopy and Origin of Luminescence Centers in Bi-Doped Materials

Luminescence Spectroscopy and Origin of Luminescence Centers in Bi-Doped Materials

Surface Sensitive Techniques for Advanced Characterization of Luminescent Materials

Blue absorption and red emission of Bi²⁺ in solids: strongly spin–orbit coupled 6p levels in low symmetry fields

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Yellow-to-orange emission from Bi^2+-doped RF_2 (R = Ca and Sr) phosphors

Cited by 32 publications

References 24 publications

Luminescence Spectroscopy and Origin of Luminescence Centers in Bi-Doped Materials

Luminescence Spectroscopy and Origin of Luminescence Centers in Bi-Doped Materials

Surface Sensitive Techniques for Advanced Characterization of Luminescent Materials

Blue absorption and red emission of Bi2+ in solids: strongly spin–orbit coupled 6p levels in low symmetry fields

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Blue absorption and red emission of Bi²⁺ in solids: strongly spin–orbit coupled 6p levels in low symmetry fields