2017
DOI: 10.1016/j.jallcom.2016.09.203
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An efficient, broad-band red-emitting Li2MgTi3O8:Mn4+ phosphor for blue-converted white LEDs

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Cited by 125 publications
(28 citation statements)
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“…The typical PLE and PL spectra of the CGS:0.6%Mn 4+ phosphors were illustrated in Figure A,B, as the optimal doping concentration was 0.6 mol%. When monitored at 676 nm, the sample exhibited two broad PLE bands within 250‐600 nm wavelength range, which can be fitted by four Gaussian curves with the peak at 306, 358, 409, and 495 nm arising from Mn‐O charge transfer band, 4 A 2g → 4 T 1g , 4 A 2g → 2 T 2g , and 4 A 2g → 4 T 2g transitions of Mn 4+ ions, respectively . It was worth noting that the peaks attributed to the 4 A 2g → 4 T 1g and 4 A 2g → 4 T 2g transitions were strong, meaning that the phosphors can be efficiently excited by both near–UV and blue lights.…”
Section: Resultsmentioning
confidence: 96%
“…The typical PLE and PL spectra of the CGS:0.6%Mn 4+ phosphors were illustrated in Figure A,B, as the optimal doping concentration was 0.6 mol%. When monitored at 676 nm, the sample exhibited two broad PLE bands within 250‐600 nm wavelength range, which can be fitted by four Gaussian curves with the peak at 306, 358, 409, and 495 nm arising from Mn‐O charge transfer band, 4 A 2g → 4 T 1g , 4 A 2g → 2 T 2g , and 4 A 2g → 4 T 2g transitions of Mn 4+ ions, respectively . It was worth noting that the peaks attributed to the 4 A 2g → 4 T 1g and 4 A 2g → 4 T 2g transitions were strong, meaning that the phosphors can be efficiently excited by both near–UV and blue lights.…”
Section: Resultsmentioning
confidence: 96%
“…52,53 Due to the energy transfer between the nearest Mn 4+ and ends with energy transfer to traps or killing sites, concentration quenching occurs in LaScO 3 :xMn 4+ phosphors. 47,54 Considering the concentration quenching occurred in LaScO 3 :xMn 4+ phosphors, the critical distance (R c ) of Mn 4+ ions in the LaScO 3 :xMn 4+ phosphors was calculated using the following equation: 55,56…”
Section: Resultsmentioning
confidence: 99%
“…With increasing temperature, the number of available phonons increases and the electron-phonon interaction becomes stronger. Strong electron-phonon interaction enables more and more electrons in 2 E state to get thermally excited when the temperature is elevated and then those electrons could [36][37][38][39] So the possibility of the nonradiative process as indicated by the dotted line is strengthened, leading to reduced luminescence efficiency and decreased luminescence intensity. Our explanation can be confirmed by the temperature-dependent lifetime as exhibited in Figure 9.…”
Section: Temperature-dependent Luminescence Analysis For Temperaturmentioning
confidence: 99%