Wang Deyin los ntawm Lanzhou University @ Wang Yuhua LPR hloov BaLu2Al4SiO12 nrog Mg2+- Si4+ khub Lub teeb xiav tshiab zoo siab daj emitting fluorescent hmoov BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+ tau npaj siv Al3+- Al3+ khub hauv Ce , nrog rau sab nraud quantum efficiency (EQE) ntawm 66.2%. Nyob rau tib lub sijhawm raws li kev hloov pauv ntawm Ce3 + emission, qhov kev hloov pauv no kuj nthuav dav cov emission ntawm Ce3 + thiab txo nws cov thermal stability.
Lanzhou University Wang Deyin & Wang Yuhua LPR hloov BaLu2Al4SiO12 nrog Mg2+- Si4+ khub: Lub teeb xiav tshiab zoo siab daj emitting fluorescent hmoov BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+ tau npaj siv Al3+- Al3+ khub hauv Ce , nrog rau sab nraud quantum efficiency (EQE) ntawm 66.2%. Nyob rau tib lub sijhawm raws li kev hloov pauv ntawm Ce3 + emission, qhov kev hloov pauv no kuj nthuav dav cov emission ntawm Ce3 + thiab txo nws cov thermal stability. Cov kev hloov pauv spectral yog vim qhov hloov pauv ntawm Mg2+- Si4+, uas ua rau muaj kev hloov pauv hauv thaj chaw siv lead ua hauv zos thiab qhov chaw sib luag ntawm Ce3+.
Txhawm rau ntsuas qhov ua tau ntawm kev siv cov tshiab tsim daj luminescent phosphors rau lub zog loj laser illumination, lawv tau tsim ua phosphor log. Nyob rau hauv lub irradiation ntawm ib tug xiav laser nrog lub hwj chim ceev ntawm 90.7 W mm - 2, lub luminous flux ntawm daj fluorescent hmoov yog 3894 lm, thiab tsis muaj teeb meem emission saturation tshwm sim. Siv xiav laser diodes (LDs) nrog lub zog ntom ntom ntawm 25.2 W mm - 2 kom zoo siab lub log daj phosphor, lub teeb dawb yog tsim nrog lub teeb ci ntawm 1718.1 lm, qhov sib txheeb xim kub ntawm 5983 K, xim rendering Performance index ntawm 65.0, thiab xim coordinates ntawm (0.3203, 0.3631).
Cov txiaj ntsig no qhia tau hais tias cov khoom siv hluav taws xob tshiab luminescent phosphors muaj peev xwm tseem ceeb hauv kev siv hluav taws xob laser uas tau tsav lub teeb pom kev zoo.
Daim duab 1
Crystal qauv ntawm BaLu1.94(Mg0.6Al2.8Si1.6)O12:0.06Ce3 + saib raws b-axis.
Daim duab 2
a) HAADF-STEM duab ntawm BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Kev sib piv nrog cov qauv qauv (insets) qhia tau tias txhua txoj haujlwm ntawm cov cations hnyav Ba, Lu, thiab Ce tau pom meej meej. b) SAED qauv ntawm BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ thiab lwm yam indexing. c) HR-TEM of BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Inset yog qhov loj HR-TEM. d) SEM of BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Inset yog qhov particle loj faib histogram.
Daim duab 3
a) Excitation thiab emission spectra of BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(0 ≤ x ≤ 1.2). Inset yog cov duab ntawm BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) nyob rau nruab hnub. b) Peak txoj hauj lwm thiab FWHM variation nrog nce x rau BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2). c) Sab nraud thiab sab hauv quantum efficiency ntawm BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2). d) Luminescence decay curves ntawm BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) saib xyuas lawv qhov siab tshaj emission (λex = 450 nm).
Daim duab 4
a–c) Contour map of temperature dependent emission spectra of BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(x = 0,0.6 and 1.2) phosphor under 450 nm excitation. d) Emission intensity of BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 and 1.2) at different heating temperatures. e) Configuration duab kos duab. f) Arrhenius haum ntawm emission siv ntawm BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0,0.6 thiab 1.2) ua haujlwm ntawm cov cua kub.
Daim duab 5
a) Emission spectra ntawm BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ nyob rau hauv xiav LDs excitation nrog txawv optical zog densities. Inset yog daim duab ntawm cov khoom siv phosphor log. b) Luminous flux. c) Conversion efficiency. d) Xim coordinates. e) CCT variations ntawm lub teeb pom kev zoo ua tiav los ntawm irradiation BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ nrog xiav LDs ntawm txawv zog densities. f) Emission spectra ntawm BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ nyob rau hauv xiav LDs excitation nrog optical zog ntom ntawm 25.2 W mm-2. Inset yog daim duab ntawm lub teeb dawb tsim los ntawm irradiated lub phosphor lub log daj nrog cov xiav LDs nrog lub zog ceev ntawm 25.2 W mm-2.
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Post lub sij hawm: Dec-30-2024