The reduction of Eu3+ to Eu2+ in BaMgSiO4∶Eu prepared in air and the luminescence of BaMgSiO4∶Eu2+ phosphor

Peng, Mingying; Pei, Zhibin; Hong, Guangyan; Su, Qiang

doi:10.1039/b211624c

Cited by 373 publications

(210 citation statements)

References 17 publications

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“…[30][31][32] It was found that the existence of these are restricted by many parameters, including the type of anions in the compound, the site size, and the energy bandgap. [16] However, there is no report about the kind of ultra-broadband and tunable emission found here in Bi-doped nanoporous silica glass in general dense hosts such as crystalline or even glassy materials.…”

Section: Full Papermentioning

confidence: 99%

Multifunctional Bismuth‐Doped Nanoporous Silica Glass: From Blue‐Green, Orange, Red, and White Light Sources to Ultra‐Broadband Infrared Amplifiers

Zhou

Jiang

Zhu

et al. 2008

Adv Funct Materials

274

140

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Ultra‐broadband luminescent sources that emit light over an extremely wide wavelength range are of great interest in the fields of photonics, medical treatment, and precision measurement. Extensive research has been conducted on materials doped with rare‐earth and transition‐metal ions, but the goal of fabricating an ultra‐broadband emitter has not been attained. We present a facile method to realize this kind of novel light source by stabilizing “active” centers (bismuth) in a “tolerant” host (nanoporous silica glass). The obtained highly transparent materials, in which, unusually, multiple bismuth centers (Bi+, Bi2+, and Bi3+) can be stabilized, emit in an ultra‐broadband wavelength range from blue‐green, orange, red, and white to the near‐infrared region. This tunable luminescence covers the spectral range of the traditional three primary colors (RGB) and also the telecommunications windows.

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Section: Full Papermentioning

confidence: 99%

Multifunctional Bismuth‐Doped Nanoporous Silica Glass: From Blue‐Green, Orange, Red, and White Light Sources to Ultra‐Broadband Infrared Amplifiers

Zhou

Jiang

Zhu

et al. 2008

Adv Funct Materials

274

140

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“…In order to obtain the Eu 2+ -doped compound, many methods have been proposed and developed and trivalent europium oxides are the starting materials usually used to achieve this. The most commonly method is to use an atmosphere that contains a reducing agent during annealing of the phosphors [7][8][9][10][11][12]. Several gases such as N 2 /H 2 , H 2 , carbon, CO and NH 3 [1] are commonly used as reducing agents.…”

Section: Introductionmentioning

confidence: 99%

Study of Eu3+→Eu2+ reduction in BaAl2O4:Eu prepared in different gas atmospheres

Rezende¹,

Valério²,

Jackson³

2015

Materials Research Bulletin

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“…Figure adapted from caused by the x-ray irradiation, but presumably originates from the synthesis conditions. The coexistence of both valence states of europium in the same material is not uncommon [57], and does not necessarily have to be reflected in the emission spectrum [56]. More detailed studies are required to evaluate the relation between the trapping/detrapping processes and the oxidation/reduction of the europium ions [20].…”

Section: Eumentioning

confidence: 99%

Persistent luminescence in nitride and oxynitride phosphors: A review

et al. 2014

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The research field of persistent luminescence has experienced a strong growth in the past two decades, with a steady development of new materials and applications. Here we give an overview of the recent progress in a specific class of host materials, namely oxynitride and nitride persistent phosphors. These are interesting hosts to explore because of their unique characteristics, such as chemical stability and tunability of the emission over the entire visible range upon doping with divalent europium. To yield persistent luminescence however, codopants have to be added or the synthesis conditions have to be adjusted. Specific materials, such as Ca 2 Si 5 N 8 :Eu,Tm and BaSi 2 O 2 N 2 :Eu, are highlighted and their properties are put into the context of emerging applications such as in vivo imaging and pressure sensing via mechanoluminescence. Finally, directions for future research are given.

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The reduction of Eu3+ to Eu2+ in BaMgSiO4∶Eu prepared in air and the luminescence of BaMgSiO4∶Eu2+ phosphor

Cited by 373 publications

References 17 publications

Multifunctional Bismuth‐Doped Nanoporous Silica Glass: From Blue‐Green, Orange, Red, and White Light Sources to Ultra‐Broadband Infrared Amplifiers

Multifunctional Bismuth‐Doped Nanoporous Silica Glass: From Blue‐Green, Orange, Red, and White Light Sources to Ultra‐Broadband Infrared Amplifiers

Study of Eu3+→Eu2+ reduction in BaAl2O4:Eu prepared in different gas atmospheres

Persistent luminescence in nitride and oxynitride phosphors: A review

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