Effects of Eu[sup 2+] Co-Doping on VUV Photoluminescence Properties of BaMgAl[sub 10]O[sub 17]:Mn[sup 2+] Phosphors for Plasma Display Panels

Moon, Taeho; Hong, Gun Young; Lee, Hong-Cheol; Moon, Eun-A; Jeoung, Byung Woo; Hwang, Suntae; Kim, Je Seok; Ryu, Byung‐Gil

doi:10.1149/1.3126528

Cited by 38 publications

(18 citation statements)

References 23 publications

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“…A log plot of the luminescence data vs time is very important for identifying whether it is a single or a two exponential function. It can be seen that the decay curves of these two samples are well fitted with a typical single-exponential function (I = A exp(Àt/s)) with a lifetime of 1.06 ls and 1.17 ls, respectively [24]. We found that the decay times for flux added samples were longer than the one without flux.…”

Section: Thermal Stability and Luminescence Decay Curves Of The Bammentioning

confidence: 62%

High dispersibility and enhanced luminescence properties of BaMgAl10O17:Eu2+ phosphors derived from molten salt synthesis

Wang

Shi

et al. 2015

Optical Materials

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Section: Thermal Stability and Luminescence Decay Curves Of The Bammentioning

confidence: 62%

High dispersibility and enhanced luminescence properties of BaMgAl10O17:Eu2+ phosphors derived from molten salt synthesis

Wang

Shi

et al. 2015

Optical Materials

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“…2 This gives a wide usage of Mn 2+ -doped compounds for fluorescent lamps, cathode ray tubes, and potential applications in white light emitting diodes ͑LEDs͒. 3 In recent years, there has been an increased interest in the investigations of luminescent materials with the structures derived from the ABPO 4 family ͑A and B are mono-and divalent cations, respectively͒. For example, Eu 2+ -doped LiSrPO 4 was investigated to have a higher emission intensity compared with the blue-emitting phosphor BaMgAl 10 O 17 :Eu 2+ .…”

mentioning

confidence: 99%

Tunable Red Luminescence of Mn[sup 2+]-Doped NaCaPO[sub 4] Phosphors

Zhang

Huang

Kai

et al. 2010

Electrochem. Solid-State Lett.

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Mn 2+ -doped NaCaPO 4 were synthesized by a solid-state reaction. The structure and luminescence were investigated. The main excitation bands located at a band extending from 380 to 450 nm could match the emission of UV light emitting diode chips. The phosphors exhibited the emission in the wavelength range of 600-750 nm. The luminescence showed a redshift with the increase in Mn 2+ doping concentrations. This color points could be tunable by controlling the doping of Mn 2+ in NaCaPO 4 . The thermal stability of the luminescence of Mn 2+ ions was evaluated at different temperatures. The doping mechanism of Mn 2+ ions was discussed.The luminescence of Mn 2+ -ion-doped inorganic compounds usually gives a broad-band emission, which depends on the host lattice. From the Tanabe-Sugano diagram, the emission corresponds to the 4 T 1 → 6 A 1 transition in Mn 2+ ions and can vary in a wide range in all the spectral wavelengths. 1 For example, the tetrahedrally coordinated Mn 2+ usually gives a green emission, whereas the octahedrally coordinated Mn 2+ gives an orange to red emission. 2 This gives a wide usage of Mn 2+ -doped compounds for fluorescent lamps, cathode ray tubes, and potential applications in white light emitting diodes ͑LEDs͒. 3 In recent years, there has been an increased interest in the investigations of luminescent materials with the structures derived from the ABPO 4 family ͑A and B are mono-and divalent cations, respectively͒. For example, Eu 2+ -doped LiSrPO 4 was investigated to have a higher emission intensity compared with the blue-emitting phosphor BaMgAl 10 O 17 :Eu 2+ . 4 NaCaPO 4 :Eu 2+ was a potential greenemitting phosphor for white LEDs. 5 Eu 2+ -doped KSrPO 4 showed a higher thermally stable luminescence, which was better than commercially available Y 3 Al 5 O1 2 :Ce 3+ at a temperature higher than 225°C. 6 Chan et al. reported that Mn 2+ -doped LiZnPO 4 has potential applications as a green-yellow-emitting phosphor in LEDs. 7 In this work, NaCa 1−x Mn x PO 4 ͑x = 0.01, 0.05, 0.08, 0.12, 0.16, 0.20, 0.22͒ were prepared by solid-state reaction and were characterized by excitation and emission spectroscopes. The luminescence properties, e.g., the wavelength position, emission intensity, full wavelength at half-maximum ͑FWHM͒, and color coordinates, were discussed depending on the Mn 2+ doping levels. The thermal stability of the luminescence of Mn 2+ ions was evaluated at different temperatures. ExperimentalNaCa 1−x Mn x PO 4 ͑x = 0.01, 0.05, 0.08, 0.12, 0.16, 0.20, 0.22͒ phosphors were synthesized by solid-state reaction. The starting material was a stoichiometric mixture of reagent grade Na 2 CO 3 , CaCO 3 , NH 4 H 2 PO 4 , and MnCO 3 . First, the mixture was heated up to 350°C and kept at this temperature for 10 h. The obtained powder was thoroughly mixed and then heated up to 750°C and was kept at this temperature for 8 h. After that, the sample was mixed and heated at 900°C for 10 h in crucibles along with the reducing agent ͑active carbon͒.X-ray diffraction ͑XRD͒ data were collected on...

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“…. It can be seen that the varied decay curves of Eu 2+ ions upon 365 nm excitation can be fitted well with order exponential decay curve using the following equation:

I = A_{1} \exp (- t / - t τ_{1} ν lldelimiterspace italicτ_{1}) + A_{2} \exp (- t / - t τ_{2} ν lldelimiterspace italicτ_{2}) + A_{3} \exp (- t / - t τ_{3} ν lldelimiterspace italicτ_{3})

where I is the luminescence intensity, A 1 , A 2 , and A 3 are constants, τ is the time, τ 1 , τ 2 , and τ 3 are the respective short and long lifetimes for the exponential components. Using these parameters, the average decay time (τ * ) can be determined using the following formula: …”

Section: Resultsmentioning

confidence: 88%

Synthesis and Photoluminescence of a New Chlorogermanate Phosphor Ca₈Mg(GeO₄)₄Cl₂:Eu²⁺

Que

Wang

et al. 2012

J. Am. Ceram. Soc.

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A new chlorogermanate compound Ca8Mg(GeO4)4Cl2 (CMGC) was synthesized via high‐temperature solid‐state reaction for the first time. The crystal structure of CMGC had been refined and determined from the XRD profiles by Rietveld refinement method, which belong to space group Fd‐3m with the lattice constants a = b = c = 15.1760(25) Å. Photoluminescence properties of CMGC:Eu2+ phosphors were investigated by absorption spectra, excitation, and emission spectra. The occupy situation and energy transfer were investigated by decay lifetimes and emission spectra under different excitation wavelengths. Thermal stability was also measured. The results show that the absorption spectra of CMGC:Eu2+ phosphors cover from 250 to 500 nm. Under 365 and 435 nm excitation, the emission spectra of CMGC:Eu2+ phosphors show blue‐green (centered at 425 and 510 nm) and green (centered at 510 nm) emission, respectively, which attributed to Eu2+ ions occupying different crystal sites. Our results indicated that CMGC:Eu2+ phosphors had a potential application use for white light‐emitting diodes.

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Effects of Eu[sup 2+] Co-Doping on VUV Photoluminescence Properties of BaMgAl[sub 10]O[sub 17]:Mn[sup 2+] Phosphors for Plasma Display Panels

Cited by 38 publications

References 23 publications

High dispersibility and enhanced luminescence properties of BaMgAl10O17:Eu2+ phosphors derived from molten salt synthesis

High dispersibility and enhanced luminescence properties of BaMgAl10O17:Eu2+ phosphors derived from molten salt synthesis

Tunable Red Luminescence of Mn[sup 2+]-Doped NaCaPO[sub 4] Phosphors

Synthesis and Photoluminescence of a New Chlorogermanate Phosphor Ca₈Mg(GeO₄)₄Cl₂:Eu²⁺

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Effects of Eu[sup 2+] Co-Doping on VUV Photoluminescence Properties of BaMgAl[sub 10]O[sub 17]:Mn[sup 2+] Phosphors for Plasma Display Panels

Cited by 38 publications

References 23 publications

High dispersibility and enhanced luminescence properties of BaMgAl10O17:Eu2+ phosphors derived from molten salt synthesis

High dispersibility and enhanced luminescence properties of BaMgAl10O17:Eu2+ phosphors derived from molten salt synthesis

Tunable Red Luminescence of Mn[sup 2+]-Doped NaCaPO[sub 4] Phosphors

Synthesis and Photoluminescence of a New Chlorogermanate Phosphor Ca8Mg(GeO4)4Cl2:Eu2+

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Synthesis and Photoluminescence of a New Chlorogermanate Phosphor Ca₈Mg(GeO₄)₄Cl₂:Eu²⁺