Wang Deyin oa Univesithi ea Lanzhou @ Wang Yuhua LPR o nkela BaLu2Al4SiO12 sebaka ka Mg2+- Si4+pairs Leseli le lecha le leputsoa le khantšitsoeng le phofshoana e mosehla e ntšang fluorescent BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+e lokisitsoe ho sebelisoa lipara tsa Al3+- Al3+ ka Ce3++ , e nang le ts'ebetso e ntle ea quantum (EQE) ea 66.2%. Ka nako e ts'oanang le redshift ea tlhahiso ea Ce3 +, phetisetso ena e boetse e holisa tlhahiso ea Ce3 + mme e fokotsa botsitso ba eona ba mocheso.
Univesithi ea Lanzhou Wang Deyin & Wang Yuhua LPR e nkela BaLu2Al4SiO12 sebaka ka Mg2+- Si4+para: Leseli le lecha le leputsoa le khantšitsoeng le phofshoana e mosehla e ntšang fluorescent BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+e lokisitsoe ho sebelisoa lipara tsa Al3+- Al3+ ka Ce3+ , e nang le ts'ebetso e ntle ea quantum (EQE) ea 66.2%. Ka nako e ts'oanang le redshift ea tlhahiso ea Ce3 +, phetisetso ena e boetse e holisa tlhahiso ea Ce3 + mme e fokotsa botsitso ba eona ba mocheso. Liphetoho tsa spectral li bakoa ke ho nkeloa sebaka ke Mg2 + - Si4 +, e bakang liphetoho tšimong ea kristale ea sebaka le symmetry ea boemo ba Ce3 +.
Ho lekola monyetla oa ho sebelisa li-phosphor tse sa tsoa etsoa tse mosehla bakeng sa khanya ea laser e matla, li ile tsa hahoa joalo ka mabili a phosphor. Tlas'a mahlaseli a laser e putsoa e nang le matla a matla a 90.7 W mm − 2, phallo e khanyang ea phofo e mosehla ea fluorescent ke 3894 lm, 'me ha ho na ketsahalo e hlakileng ea ho phalla ha metsi. U sebelisa li-blue laser diode (LDs) tse nang le matla a matla a 25.2 W mm − 2 ho khahlisa mabili a mosehla a phosphor, khanya e tšoeu e khanyang e hlahisoa ka khanya ea 1718.1 lm, mocheso oa 'mala o amanang oa 5983 K, index ea mebala ea 65.0, le likhokahano tsa mebala tsa (0.3203, 0.3631).
Liphetho tsena li bonts'a hore li-phosphor tse sa tsoa etsoa tse mosehla tse luminescent li na le monyetla o moholo lits'ebetsong tsa mabone a matla a phahameng a laser.
Setšoantšo sa 1
Sebopeho sa kristale sa BaLu1.94(Mg0.6Al2.8Si1.6)O12:0.06Ce3+e shebiloe ho bapa le b-axis.
Setšoantšo sa 2
a) HAADF-STEM setšoantšo sa BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Ha ho bapisoa le sebopeho sa sebopeho (li-inset) ho senola hore maemo ohle a li-cations tse boima tsa Ba, Lu, le Ce li bonts'itsoe ka ho hlaka. b) SAED mohlala oa BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+le indexing e amanang le eona. c) HR-TEM ea BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Ka hare ke HR-TEM e atolositsoeng. d) SEM ea BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Inset ke histogram ea kabo ea boholo ba karoloana.
Setšoantšo sa 3
a) Phatlalatso le ponahalo ea ho tsoa ha BaLu1.94(MgxAl4−2xSi1+x)O12: 0.06Ce3+ (0 ≤ x ≤ 1.2). Inset ke linepe tsa BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) motšehare. b) Boemo ba tlhōrō le phapang ea FWHM ka ho eketseha ha x bakeng sa BaLu1.94(MgxAl4−2xSi1+x)O12: 0.06Ce3+ (0 ≤ x ≤ 1.2). c) Bokhoni ba ka ntle le bo ka hare ba palo ea BaLu1.94 (MgxAl4−2xSi1 + x) O12: 0.06Ce3 + (0 ≤ x ≤ 1.2). d) Luminescence decay curves of BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) e shebileng tlhahiso ea bona e phahameng ka ho fetisisa (λex = 450 nm).
Setšoantšo sa 4
a–c) 'Mapa oa contour oa spectra ea mocheso o itšetlehileng ka mocheso oa BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(x = 0, 0.6 le 1.2) phosphor tlas'a 450 nm excitation. d) Matla a tlhahiso ea BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 le 1.2) mochesong o fapaneng oa mocheso. e) Sets'oants'o sa khokahano ea tlhophiso. f) Arrhenius e loketseng matla a tlhahiso ea BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 le 1.2) e le mosebetsi oa mocheso oa mocheso.
Setšoantšo sa 5
a) Emission spectra of BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ under blue LDs excitation with different optical power densities. Inset ke foto ea lebili le entsoeng ka phosphor. b) Phallo e khanyang. c) Ho sebetsa hantle ha phetoho. d) Likhokahanyo tsa mebala. e) Mefuta e fapaneng ea CCT ea mohloli oa lebone o fihletsoeng ke mahlaseli a BaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3 + le li-LD tse putsoa ka matla a fapaneng a matla. f) Emission spectra of BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ under blue LDs excitation with optical power densities of 25.2 W mm−2. Inset ke foto ea leseli le lesoeu le hlahisitsoeng ke lebili le tšehla la phosphor le nang le li-LD tse putsoa tse nang le matla a matla a 25.2 W mm-2.
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Nako ea poso: Dec-30-2024