Wang Deyin wochokera ku yunivesite ya Lanzhou @ Wang Yuhua LPR walowa m'malo mwa BaLu2Al4SiO12 ndi Mg2+- Si4+ awiriawiri Kuwala kwatsopano kwa buluu wokondwa wachikasu wotulutsa fulorosenti ufa BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+ inakonzedwa pogwiritsa ntchito Al3+- Al3+ awiriawiri mu Ce3+ , ndi mphamvu yakunja ya quantum (EQE) ya 66.2%. Nthawi yomweyo monga redshift ya Ce3 + emission, kulowetsa uku kumakulitsanso kutulutsa kwa Ce3 + ndikuchepetsa kukhazikika kwake kwamafuta.
Yunivesite ya Lanzhou Wang Deyin & Wang Yuhua LPR ilowa m'malo mwa BaLu2Al4SiO12 ndi Mg2+- Si4+awiri: Kuwala kwatsopano kwa buluu wokondwa wachikasu wotulutsa fulorosenti ufa BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+ inakonzedwa pogwiritsa ntchito ma Al3+- Al3+ awiriawiri mu Ce3+ , ndi mphamvu yakunja ya quantum (EQE) ya 66.2%. Nthawi yomweyo monga redshift ya Ce3 + emission, kulowetsa uku kumakulitsanso kutulutsa kwa Ce3 + ndikuchepetsa kukhazikika kwake kwamafuta. Kusintha kwa spectral kumachitika chifukwa cholowa m'malo mwa Mg2 + - Si4 +, zomwe zimayambitsa kusintha kwa kristalo wamba komanso mawonekedwe a Ce3 +.
Kuti muwone kuthekera kogwiritsa ntchito ma phosphor achikasu achikasu owunikira pakuwunikira kwamphamvu kwa laser, adamangidwa ngati mawilo a phosphor. Pansi pa kuyatsa kwa laser ya buluu yokhala ndi mphamvu yakuchulukira kwa 90.7 W mm − 2, kuwala kowala kwa ufa wachikasu wa fulorosenti ndi 3894 lm, ndipo palibe chowoneka bwino chotulutsa. Pogwiritsa ntchito ma laser diode a buluu (LDs) okhala ndi mphamvu ya 25.2 W mm − 2 kusangalatsa mawilo achikasu a phosphor, kuwala koyera kowala kumapangidwa ndi kuwala kwa 1718.1 lm, kutentha kwamtundu wolumikizana wa 5983 K, mtundu wopereka index wa 65.0, ndi ma coordinates amitundu (0.3203, 0.3631).
Zotsatirazi zikuwonetsa kuti ma phosphor achikasu opepuka omwe angopangidwa kumene ali ndi kuthekera kwakukulu pakugwiritsa ntchito zowunikira zamphamvu kwambiri zoyendetsedwa ndi laser.
Chithunzi 1
Kapangidwe ka kristalo ka BaLu1.94(Mg0.6Al2.8Si1.6)O12:0.06Ce3+kuwonedwa motsatira b-axis.
Chithunzi 2
a) Chithunzi cha HAADF-STEM cha BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Poyerekeza ndi mawonekedwe apangidwe (zoyika) zikuwonetsa kuti malo onse a cations olemetsa Ba, Lu, ndi Ce amawonetsedwa bwino. b) SAED chitsanzo cha BaLu1.9 (Mg0.6Al2.8Si1.6)O12: 0.1Ce3 + ndi indexing yogwirizana. c) HR-TEM wa BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Choyikapo ndi HR-TEM yokulitsidwa. d) SEM ya BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Inset ndi histogram yogawa kukula kwa tinthu.
Chithunzi 3
a) Kusangalatsa ndi kutulutsa mpweya kwa BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(0 ≤ x ≤ 1.2). Zomwe zili mkati ndi zithunzi za BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) masana. b) Malo apamwamba ndi kusiyana kwa FWHM ndi kuwonjezeka kwa x kwa BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2). c) Kuchita bwino kwa kuchuluka kwa kunja ndi mkati kwa BaLu1.94 (MgxAl4−2xSi1 + x) O12: 0.06Ce3+ (0 ≤ x ≤ 1.2). d) Mipiringidzo yowola ya Luminescence ya BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) kuyang'anira kutulutsa kwawo kwakukulu (λex = 450 nm).
Chithunzi 4
a–c) Mapu ozungulira a mawonekedwe otengera kutentha a BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(x = 0, 0.6 ndi 1.2) phosphor pansi pa 450 nm chisangalalo. d) Kuchuluka kwa mpweya wa BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 ndi 1.2) pa kutentha kosiyana. e) Chithunzi chokongoletsera kasinthidwe. f) Arrhenius yoyenerera mphamvu ya mpweya wa BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 ndi 1.2) monga ntchito ya kutentha kwa kutentha.
Chithunzi 5
a) Emission spectra of BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ under blue LDs excitation with different optical power densities. Inset ndi chithunzi cha gudumu lopangidwa ndi phosphor. b) Kuwala kowala. c) Kutembenuka mtima. d) Kugwirizanitsa mitundu. e) Kusiyana kwa CCT kwa gwero lounikira lomwe limapezedwa ndi kuwala kwa BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ yokhala ndi ma LD a buluu pamagetsi osiyanasiyana. f) Kutulutsa kwamtundu wa BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ pansi pa chisangalalo cha ma LD a buluu okhala ndi kachulukidwe kamphamvu ka 25.2 W mm−2. Choyikapo ndi chithunzi cha kuwala koyera komwe kumapangidwa ndi gudumu lachikasu la phosphor lokhala ndi ma LD abuluu okhala ndi mphamvu ya 25.2 W mm−2.
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Nthawi yotumiza: Dec-30-2024