Relationship between Crystal Structure and Luminescence Properties of (Y0.96 - x Lnx Ce0.04)3 Al5 O12 (Ln = Gd, La, Lu) Phosphors

Kong, Li; Gan, Shucai; Hong, Guangyan; Zhang, Jilin

doi:10.1016/s1002-0721(08)60008-3

Cited by 36 publications

(17 citation statements)

References 10 publications

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“…Recently, lots of effort has been put for shifting the emission spectrum of YAG:Ce into the red spectral region either by codoping with other rare-earth ions [5,6] or by substituting Y 3+ by other cations (especially by Tb 3+ and Gd 3+ ) [7][8][9]. Moreover, some efficient nitride-based phosphors such as (Ca,Sr,Ba) 2 Si 5 N 8 :Eu 2+ [10], CaAlSiN 3 :Eu 2+ [11] and SrAlSiN 3 :Eu 2+ [12] have been developed and meet some of the spectral requirements for general lighting.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and optical properties of Ce3+-doped Y3Mg2AlSi2O12 phosphors

Katelnikovas

Bettentrup

Uhlich

et al. 2009

Journal of Luminescence

123

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Section: Introductionmentioning

confidence: 99%

Synthesis and optical properties of Ce3+-doped Y3Mg2AlSi2O12 phosphors

Katelnikovas

Bettentrup

Uhlich

et al. 2009

Journal of Luminescence

123

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“…12 :Ce were shown inFig. 1c, indicating that the chosen compositions have luminescence spectra similar to the commercial YAG:Ce except for the emission intensity which was only about 29% of the commercial YAG:Ce phosphor.…”

mentioning

confidence: 84%

“…[8][9][10][11][12][13][14] A good overview on the effect of changing the composition of host lattice was given by Pan et.al. 8 Replacing Y 3þ by Lu 3þ , La 3þ , and Gd 3þ are shown to shift the Ce 3þ 5d !…”

mentioning

confidence: 99%

Luminescence Comparison and Enhancement of Ce-doped Yttrium Aluminum Garnet Phosphor via Cation Substitution and Adding Flux

Maniquiz

Jung

Jeong

2011

J. Electrochem. Soc.

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Ce phosphors prepared by spray pyrolysis, the luminescence properties were compared with commercial YAG:Ce. When x ¼ 0.2 and y ¼ 0.4, the emission wavelength of each phosphor was same to the commercial YAG:Ce. In terms of realizing warm-white LEDs, the Y 3 Al 4.2 (Mg,Si) 0.4 O 12 :Ce phosphor was better than (Y 0.8 Gd 0.2 ) 3 Al 5 O 12 :Ce and commercial YAG:Ce. However, the emission intensity and the thermal quenching temperature of Y 3 Al 4.2 (Mg,Si) 0.4 O 12 :Ce phosphor were lower than the commercial one. The addition of B(OH) 3 as a flux to the spray solution improved the emission intensity as well as the quenching temperature due to the increase of crystallinity. For the Y 3 Al 4.2 (Mg,-Si) 0.4 O 12 :Ce, doping the La 3þ ions into the Y 3þ sites made it possible to effectively improve the emission intensity without any shift on its emission peak position. From the XRD analysis, the La incorporation improved the crystallinity, which was responsible for the improvement of the emission intensity and the thermal quenching temperature. Finally, the optimized (Y 0.95 La 0.05 ) 3 Al 4.2 (Mg,Si) 0.4 O 12 :Ce phosphor prepared using 3 wt % boric acid had the highest emission intensity (which was about 92% of the commercial phosphor), the quenching temperature of 224 C, and CIE color coordinates (0.462, 0528) more profitable to fabricate warm-white LEDs compared with the commercial YAG:Ce.

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“…Recently, lots of significant effort has been put for shifting the emission spectrum of YAG:Ce into the red spectral region either by codoping with other rare-earth ions (Pr 3+ ) or by substituting Y 3+ by other cations (especially by Tb 3+ and Gd 3+ ) [12][13][14][15][16][17]. In addition, some efficient nitride-based red phosphors such as (Ca, Sr, Ba) 2 Si 5 N 8 :Eu 2+ [18,19], ␣-SiAlON:Eu 2+ [20,21], CaAlSiN 3 :Eu 2+ [22] and SrAlSiN 3 :Eu 2+ [23] have been developed and met some of the spectral requirements for general indoor lighting.…”

Section: Introductionmentioning

confidence: 99%