Ko Wang Deyin mai i te Whare Wananga o Lanzhou @ Wang Yuhua LPR te whakakapi i a BaLu2Al4SiO12 ki te Mg2+- Si4+pairs He rama kikorangi hou e hihiko ana te kowhai kowhai e whakaputa ana i te paura korikori BaLu2 (Mg0.6Al2.8Si1.6) O12: I whakaritea a Ce3+ ma te whakamahi Al3+- Al3+ takirua i Ce3+ , me te 66.2%. I te wa ano i te huringa whero o te Ce3 + tukunga, ka whakanuia ano e tenei whakakapinga te whakaputanga o te Ce3 + me te whakaiti i te pumau o te waiariki.
Ko te Whare Wananga o Lanzhou Wang Deyin & Wang Yuhua LPR te whakakapi i a BaLu2Al4SiO12 ki te Mg2+- Si4+ takirua: He rama kikorangi hou e hihiko ana te kowhai kowhai e whakaputa ana i te paura korikori BaLu2 (Mg0.6Al2.8Si1.6) O12: I whakaritea a Ce3+ ma te whakamahi Al3+- Al3+ takirua i Ce3+ , me te 66.2%. I te wa ano i te huringa whero o te Ce3 + tukunga, ka whakanuia ano e tenei whakakapinga te tukunga o te Ce3 + me te whakaiti i te pumau o te waiariki. Ko nga huringa matakite na te whakakapinga o Mg2+- Si4+, ka puta he huringa i te mara karaihe o te rohe me te hangarite turanga o te Ce3+.
Hei arotake i te whaihuatanga o te whakamahi i nga phosphor luminescent kowhai hou i whakawhanakehia mo te whakamarama taiaho mana teitei, i hangaia hei wira phosphor. I raro i te irradiation o te taiaho puru ki te kiato mana o 90.7 W mm − 2, ko te rere marama o te paura kowhai kowhai ko 3894 lm, a karekau he mea e kitea ana te ahua o te waiwai. Ma te whakamahi i nga diodes laser puru (LDs) me te kaha o te mana o te 25.2 W mm − 2 ki te whakaohooho i nga wira phosphor kowhai, ka puta te marama ma kanapa me te kanapa o te 1718.1 lm, te pāmahana tae o te 5983 K, he tohu tohu tae o te 65.0, me te taunga tae o (0.3203, 0.3631).
Ko enei hua e tohu ana ko nga phosphors luminescent kowhai hou kua whakahiatohia he nui te kaha ki roto i nga tono whakamarama laser peia teitei.
Whakaahua 1
Hanganga tioata o BaLu1.94(Mg0.6Al2.8Si1.6)O12:0.06Ce3+tirohia i te taha o te tuaka-b.
Whakaahua 2
a) HAADF-STEM ahua o BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Ko te whakataurite ki te tauira hanganga (whakauru) e whakaatu ana ko nga tuunga katoa o nga cations taumaha Ba, Lu, me Ce kua ata whakaahuatia. b) tauira SAED o BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+me te taupū whai pānga. c) HR-TEM o BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Ko te whakaurunga ko te HR-TEM kua whakanuia. d) SEM o BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Ko te whakauru ko te histogram tohatoha rahi matūriki.
Whakaahua 3
a) Te hikaka me te tukunga o BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(0 ≤ x ≤ 1.2). Ko te whakauru he whakaahua o BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) i raro i te awatea. b) Te tūnga tihi me te rerekētanga FWHM me te whakanui ake i te x mo BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2). c) Te kaha o te rahinga o waho me o roto o BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2). d) Ko nga pihinga pirau o te rama o BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) te aro turuki i o raatau tukunga teitei (λex = 450 nm).
Whakaahua 4
a–c) Mapi porowhita o te tuāwhiorangi tukunga i te pāmahana o BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(x = 0, 0.6 me 1.2) ūkuikui i raro i te 450 nm te whakaihiihi. d) Te kaha o te tukunga o BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 me 1.2) i nga wera whakamahana rereke. e) Hoahoa ruruku whirihoranga. f) Arrhenius te whakauru i te kaha tukunga o BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 me 1.2) hei mahi o te mahana whakawera.
Whakaahua 5
a) Turanga tukunga o BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+i raro i nga LDs kikorangi whakakorikori me nga rereke rereke o te mana whatu. Ko te whakaurunga he whakaahua o te wira phosphor hangaia. b) Rerewharewha. c) Te kaha o te hurihanga. d) Taunga tae. e) Ko nga rereketanga CCT o te puna rama i tutuki i te irradiation BaLu1.9(Mg0.6Al2.8Si1.6)O12: 0.1Ce3+ me nga LD kikorangi i nga rereke rereke o te kaha. f) Turanga tukunga o BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ i raro i te hihikotanga LDs kikorangi me te kiato mana whatu o 25.2 W mm−2. Ko te whakaurunga ko te whakaahua o te rama ma i hangaia e te wira ūkuikui kowhai me nga LD kikorangi me te kiato mana o te 25.2 W mm−2.
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Wā tuku: Tihema-30-2024