Citric based sol-gel synthesis and photoluminescence properties of un-doped and Sm3+ doped Ca3Y2Si3O12 phosphors

Bandi, Vengala Rao; Grandhe, Bhaskar Kumar; Jang, Kiwan; Lee, Ho-Sueb; Yi, Soung Soo; Jeong, Jung-Hyun

doi:10.1016/j.ceramint.2011.02.026

Cited by 47 publications

(5 citation statements)

References 17 publications

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“…XRD study was carried out to confirm the formation of the desired compound synthesized by the solid-state synthesis method. The XRD pattern of the as-prepared Ca 3 Y 2 Si 3 O 12 sample matched well with the XRD pattern reported by Bandi et al (19). From the above observation it was concluded that the host material was prepared successfully by the procedure described above and no other diffraction peaks from raw material were detected.…”

Section: Introductionsupporting

confidence: 88%

“…A significant optical and luminescence material, silicate phosphors have created much interest as they exhibit advantages such as excellent durability, high luminous efficiency, low cost and good physical and chemical stability . At the present time, Ca 3 Y 2 Si 3 O 12 :Tb 3+ , Sm 3+ , Ca 3 Y 2 Si 3 O 12 :Sm 3+ , Ca 3 Y 2 Si 3 O 12 :Dy 3+ , Ce 3+ , and Ca 3 Y 2 Si 3 O 12 :Pr 3+ have been synthesized using various synthesis methods and by applying different optical characterizations. A survey of the literature showed that no systematic investigations have been made on the Ca 3 Y 2 Si 3 O 12 phosphor (especially, ML of γ‐ray irradiated material).…”

Section: Introductionmentioning

confidence: 99%

“…Most emission spectra of different rare earth (RE) ions are similar in different hosts, but their physical properties depend on the host material. Recently, RE ions doped with silicate‐based host materials have been attracting much attention due to their enhanced optical properties . A significant optical and luminescence material, silicate phosphors have created much interest as they exhibit advantages such as excellent durability, high luminous efficiency, low cost and good physical and chemical stability .…”

Section: Introductionmentioning

confidence: 99%

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Mechanoluminescence, thermoluminescence, photoluminescence studies on Ca₃Y₂Si₃O₁₂:RE³⁺ (RE³⁺ = Dy³⁺and Eu³⁺) phosphors

et al. 2015

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Dy(3+) and Eu(3+) activated Ca3Y2Si3O12 phosphors were synthesized by the solid-state synthesis method. The phosphors were characterized by X-ray diffraction (XRD), mechanoluminescence (ML), thermoluminescence (TL) and photoluminescence (PL) to determine structure and luminescence. For ML glow curves, only one peak was observed, as only one type of luminescence centre was formed during irradiation. The Ca3Y2Si3O12:Dy(3+) TL glow curve showed a single peak at 151.55 °C and the Ca3Y2Si3O12:Eu(3+) TL glow curve peaked at 323 °C with a small peak at 192 °C, indicating that two types of traps were activated. The trapping parameters for both the samples were calculated using Chen's peak shape method. Dy(3+)-activated Ca3Y2Si3O12 showed emission at 482 and 574 nm when excited by a 351 nm excitation wavelength, whereas the Eu(3+)-activated Ca3 Y2Si3O12 phosphor PL emission spectra showed emission peaks at 613 nm, 591 nm, 580 nm when excited at 395 nm wavelength. When excited at 466 nm, prominent emission peaks were observed at their respective positions with very slight shifts.

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Section: Introductionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanoluminescence, thermoluminescence, photoluminescence studies on Ca₃Y₂Si₃O₁₂:RE³⁺ (RE³⁺ = Dy³⁺and Eu³⁺) phosphors

et al. 2015

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“…The current trend for light generation is the use of white light emitting diodes (WLEDs) because of their efficiency, lifetime, intensity, and low power consumption compared with compact fluorescence lamps (CFLs). [1][2][3][4][5] The first successful WLED was developed and fabricated using GaN and YAG:Ce phosphors. [6][7][8] One caveat is that YAG:Ce has a bad colour rendering index and now studies are underway to overcome this problem.…”

Section: Introductionmentioning

confidence: 99%

Luminescence studies of a Li₂Ca_1−xSiO₄:xSm³⁺ phosphor for the generation of white light under NUV‐excited phosphor converting LEDs

Parimala

Rao²,

Suresh³

et al. 2022

Luminescence

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In this paper, we present new aspects of Sm3+‐doped pure Li2CaSiO4 as a suitable candidate for white light emitting diode (WLED) applications. The samples were mainly prepared using a conventional modified solid‐state synthesis technique. The structural studies were done using X‐ray diffraction and Rietveld refinement. Instruments such as a scanning electron microscope (SEM) were used to obtain information about the morphology of the as‐prepared samples. Photoluminescence (PL) analysis of phosphor samples for variable concentrations of doping ions with variable excitations were presented. When doped with Sm3+ in host Li2CaSiO4 it emitted intense blue, green and red emissions and a more intense red emission peak (605 nm) under 408 nm excitation (near‐UV–blue). Our study shows that the as‐prepared phosphor may be useful for optical devices and mainly for WLEDs. The corresponding transitions of doping ions and concentration quenching effect were studied in detail. The 1931 Commission Internationale de l'Eclairage (x, y) chromaticity coordinates showed the distribution of spectral regions calculated from PL emission spectra and this was found (0.63, 0.36) in the red region, so the phosphor may be useful for near‐UV–blue excited WLED applications.

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“…Силикаты и германаты редкоземельных элементов (РЗЭ) представляют интерес в качестве эмиссион-ных сред видимого, ближнего и среднего ИК-диапа-зонов [1][2][3][4][5][6][7][8][9][10]. Особое место среди этих материалов занимают иттрийсодержащие силикаты кальция и строн-ция A 3 Y 2 (Si 3 O 9 ) 2 (A = Ca, Sr) [11][12][13][14][15][16][17].…”

Section: Introductionunclassified

Новый люминофор ИК-диапазона на основе германата Sr-=SUB=-3-=/SUB=-La-=SUB=-2-=/SUB=-(Ge-=SUB=-3-=/SUB=-O-=SUB=-9-=/SUB=-)-=SUB=-2-=/SUB=- : Nd-=SUP=-3+-=/SUP=-, Ho-=SUP=-3+-=/SUP=-

Мелкозерова¹,

Бакланова²,

Липина³

et al. 2018

Физика Твердого Тела

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Cyclogermanate Sr_3La_2(Ge_3O_9)_2, isostructural to silicate Sr_3Er_2(Si_3O_9)_2, activated by neodymium and holmium is obtained for the first time by the precursor method. Ion Nd^3+ in the structure of Sr_3La_2(Ge_3O_9)_2 is a sensitizer of the infrared luminescence of Ho^3+. Excitation by radiation with a wavelength of 808 nm leads to a series of emission lines in the luminescence spectra of Sr_3La_2- x Nd_ x (Ge_3O_9)_2 : Ho^3+ in the short-wave and middle-IR ranges (1.0–3.4 μm). The highest intensity of lines at 2.1 and 2.7 μm, associated with the ^5 I _7 → ^5 I _8 and ^5 I _6 → ^5 I _7 transitions in the Ho^3+ ion, is found for compositions containing traces of holmium. Based on the analysis of the concentration dependences of the luminescence intensity, an optimal composition of the phosphor is determined, which ensures the maximum efficiency of conversion of laser radiation energy. The data obtained are interpreted in the assumption of cross-relaxation energy transfer from Nd^3+ to Ho^3+.

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Citric based sol-gel synthesis and photoluminescence properties of un-doped and Sm3+ doped Ca3Y2Si3O12 phosphors

Cited by 47 publications

References 17 publications

Mechanoluminescence, thermoluminescence, photoluminescence studies on Ca₃Y₂Si₃O₁₂:RE³⁺ (RE³⁺ = Dy³⁺and Eu³⁺) phosphors

Mechanoluminescence, thermoluminescence, photoluminescence studies on Ca₃Y₂Si₃O₁₂:RE³⁺ (RE³⁺ = Dy³⁺and Eu³⁺) phosphors

Luminescence studies of a Li₂Ca_1−xSiO₄:xSm³⁺ phosphor for the generation of white light under NUV‐excited phosphor converting LEDs

Новый люминофор ИК-диапазона на основе германата Sr-=SUB=-3-=/SUB=-La-=SUB=-2-=/SUB=-(Ge-=SUB=-3-=/SUB=-O-=SUB=-9-=/SUB=-)-=SUB=-2-=/SUB=- : Nd-=SUP=-3+-=/SUP=-, Ho-=SUP=-3+-=/SUP=-

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Citric based sol-gel synthesis and photoluminescence properties of un-doped and Sm3+ doped Ca3Y2Si3O12 phosphors

Cited by 47 publications

References 17 publications

Mechanoluminescence, thermoluminescence, photoluminescence studies on Ca3Y2Si3O12:RE3+ (RE3+ = Dy3+and Eu3+) phosphors

Mechanoluminescence, thermoluminescence, photoluminescence studies on Ca3Y2Si3O12:RE3+ (RE3+ = Dy3+and Eu3+) phosphors

Luminescence studies of a Li2Ca1−xSiO4:xSm3+ phosphor for the generation of white light under NUV‐excited phosphor converting LEDs

Новый люминофор ИК-диапазона на основе германата Sr-=SUB=-3-=/SUB=-La-=SUB=-2-=/SUB=-(Ge-=SUB=-3-=/SUB=-O-=SUB=-9-=/SUB=-)-=SUB=-2-=/SUB=- : Nd-=SUP=-3+-=/SUP=-, Ho-=SUP=-3+-=/SUP=-

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Mechanoluminescence, thermoluminescence, photoluminescence studies on Ca₃Y₂Si₃O₁₂:RE³⁺ (RE³⁺ = Dy³⁺and Eu³⁺) phosphors

Mechanoluminescence, thermoluminescence, photoluminescence studies on Ca₃Y₂Si₃O₁₂:RE³⁺ (RE³⁺ = Dy³⁺and Eu³⁺) phosphors

Luminescence studies of a Li₂Ca_1−xSiO₄:xSm³⁺ phosphor for the generation of white light under NUV‐excited phosphor converting LEDs