Radiative properties of Eu2+ in BaGa2S4

Jabbarov, Rasim B.; Chartier, C.; Тагиев, Б. Г.; Тагиев, О. Б.; Musayeva, Nahida; Barthou, C.; Bénalloul, P.

doi:10.1016/j.jpcs.2005.02.003

Cited by 66 publications

(48 citation statements)

References 16 publications

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“…In the general family of ternary sulfides M IIA M III 2 S 4 , the spectral position of Eu 2+ emission is a strong function of the crystal environment [7,33], shifting from blue-green (493 nm) to green (535 nm) to yellow (565 nm) with decreasing M II cation size (Ba, Sr, Ca), respectively, and with increasing M III cation size (Al, Ga, In). The green emission from the thiogallate SrGa 2 S 4 :Eu 2+ has a FWHM of 50 nm and a quantum efficiency of ∼ 80%.…”

Section: Wideband Green Phosphorsmentioning

confidence: 99%

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Research challenges to ultra‐efficient inorganic solid‐state lighting

Phillips¹,

Coltrin

Crawford

et al. 2007

Laser & Photonics Reviews

374

268

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Solid-state lighting is a rapidly evolving, emerging technology whose efficiency of conversion of electricity to visible white light is likely to approach 50% within the next several years. This efficiency is significantly higher than that of traditional lighting technologies, giving solid-state lighting the potential to enable significant reduction in the rate of world energy consumption. Further, there is no fundamental physical reason why efficiencies well beyond 50% could not be achieved, which could enable even more significant reduction in world energy usage. In this article, we discuss in some detail: (a) the several approaches to inorganic solid-state lighting that could conceivably achieve "ultra-high," 70% or greater, efficiency, and (b) the significant research questions and challenges that would need to be addressed if one or more of these approaches were to be realized.

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Section: Wideband Green Phosphorsmentioning

confidence: 99%

“…show an emission peak shift from 503 nm (FWHM = 42 nm) to 488 nm (FWHM = 70 nm) [33] when temperature is increased from 77 K to 450 K.…”

Section: +mentioning

confidence: 99%

Research challenges to ultra‐efficient inorganic solid‐state lighting

Phillips¹,

Coltrin

Crawford

et al. 2007

Laser & Photonics Reviews

374

268

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“…The peak wavelength of each spectra in Fig. 1 is rather shorter than that of reported spectra [3][4][5]. The prepared samples are considered to have many sulfur vacancies be- cause they were sintered in vacuum.…”

Section: +mentioning

confidence: 89%

“…To obtain pure white light having good colour rendering properties, blue shift of the Ce emission and red shift of the Eu emission are necessary. Group II element substitution of Ca in CaGa 2 S 4 by Sr or Ba was known to cause blue shift of Ce and Eu emissions due to the change of crystal field splitting of 5d levels [3][4][5]. However, there are only a few reports on group III element substitution in thiogallate compounds aiming to cause red shift of the Eu emission [8,6,7,10] and as of present, there is no report on systematic investigation of group III element substitution effects to the best of our knowledge.…”

mentioning

confidence: 99%

Group III element substitution effects on Eu‐doped thiogallate phosphors

Ohno

Honda

Noguchi

et al. 2009

Phys. Status Solidi (c)

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Photoluminescence properties of II‐III2S4:Eu (II=Ca, Sr, Ba; III=Ga, In, Y, La; Eu concentration was 1 mol%) have been investigated systematically. In Ga compounds, well‐known green∼yellow emissions are observed, while the emissions become very weak in In substituted compounds. In III=Y or La compounds, when II=Ca or Sr, red∼infrared emissons which seem to be due to phonon‐terminated transition of the Eu2+ ions are observed, while when II=Ba, strong sharp lines due to the Eu3+ions are detected. These spectral changes are discussed in terms of the effective ionic radii and the sulfur vacancies (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…44296.16340 Легированный редкоземельными элементами (РЗЭ) тиогаллат каль-ция (CaGa 2 S 4 ) является перспективным материалом в оптоэлектронике и фотонике [1]. Максимальная энергия фононов и хорошие оптические свойства позволяют получать высокоэффективные люминофоры, а элек-тропроводность бывает пригодна для создания электролюминесцентных дисплеев [2][3][4] [5][6][7][8][9][10]. CaGa 2 S 4 с примесью эрбия дает фотолюминесцен-цию на длине волны 1554 nm, что подходит для применения его в телекоммуникации [11].…”

Section: поступило в редакцию 22 мая 2016 гunclassified

Термостимулированная люминесценция кристалла Ca(Al-=SUB=-x-=/SUB=-Ga-=SUB=-1-x-=/SUB=-)-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=-:Eu-=SUP=-2+-=/SUP=-

Asadov¹,

Kazimova²,

Ибрагимова³

et al. 2017

Письма В Журнал Технической Физики

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Проведены исследования термолюминесценции (ТЛ) твердых растворов Ca(Alx Ga 1−x ) 2 S 4 : Eu 2+ (x = 0.1−0.3) после ультрафиолетового облучения ме-тодом линейного нагрева. Показано, что наблюдаемые максимумы ТЛ сложные и состоят из нескольких сильно перекрывающихся парциальных максимумов, определены энергия активации, сечение захвата, частотный фактор и концен-трация ловушечных уровней, ответственных за эти максимумы. С увеличением x интенсивность излучения и число пиков растет.

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Radiative properties of Eu2+ in BaGa2S4

Cited by 66 publications

References 16 publications

Research challenges to ultra‐efficient inorganic solid‐state lighting

Research challenges to ultra‐efficient inorganic solid‐state lighting

Group III element substitution effects on Eu‐doped thiogallate phosphors

Термостимулированная люминесценция кристалла Ca(Al-=SUB=-x-=/SUB=-Ga-=SUB=-1-x-=/SUB=-)-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=-:Eu-=SUP=-2+-=/SUP=-

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