Wang Deyin daga Jami'ar Lanzhou @ Wang Yuhua LPR ya maye gurbin BaLu2Al4SiO12 tare da Mg2+- Si4+pairs Wani sabon haske mai launin shuɗi mai farin ciki rawaya mai fitar da foda BaLu2 (Mg0.6Al2.8Si1.6) O12: An shirya Ce3 + ta amfani da Al3+- Al3+pairs , tare da ingantaccen ƙididdigewa na waje (EQE) na 66.2%. A daidai lokacin da jajayen iska na Ce3+, wannan maye gurbin kuma yana faɗaɗa fitar da Ce3+ kuma yana rage kwanciyar hankali.
Jami'ar Lanzhou Wang Deyin & Wang Yuhua LPR ya maye gurbin BaLu2Al4SiO12 tare da Mg2 + - Si4 + nau'i-nau'i: Wani sabon haske mai haske mai launin rawaya mai ban sha'awa mai ban sha'awa BaLu2 (Mg0.6Al2.8Si1.6) O12: An shirya Ce3 + ta amfani da Al3 + - Al3 + Pairs , tare da ingantaccen ƙididdigewa na waje (EQE) na 66.2%. A daidai lokacin da jajayen iska na Ce3+, wannan maye gurbin kuma yana faɗaɗa fitar da Ce3+ kuma yana rage kwanciyar hankali. Canje-canje na bakan sun kasance saboda maye gurbin Mg2+- Si4+, wanda ke haifar da canje-canje a cikin filin kristal na gida da matsayi na Ce3+.
Don kimanta yuwuwar amfani da sabbin gyare-gyaren gyare-gyaren gyare-gyare na luminescent phosphor don hasken Laser mai ƙarfi, an gina su azaman ƙafafun phosphor. A ƙarƙashin iska mai haske na Laser shuɗi tare da ƙarfin ƙarfin 90.7 W mm - 2, hasken haske na rawaya mai kyalli foda shine 3894 lm, kuma babu wani abin da ya faru a fili jikewa. Amfani da blue Laser diodes (LDs) tare da ƙarfin ƙarfin 25.2 W mm - 2 don faranta wa ƙafafun phosphor rawaya, an samar da haske mai haske tare da haske na 1718.1 lm, yanayin zafi mai launi na 5983 K, alamar ma'anar launi na 65.0, da daidaitawar launi na (0.3203, 0.3631).
Waɗannan sakamakon suna nuna cewa sabbin haɗe-haɗe na phosphor mai haske na rawaya suna da gagarumin yuwuwar a aikace-aikacen hasken wutar lantarki mai ƙarfi.
Hoto 1
Crystal tsarin BaLu1.94 (Mg0.6Al2.8Si1.6) O12: 0.06Ce3 + duba tare da b-axis.
Hoto 2
a) HAADF-STEM Hoton BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Kwatanta da tsarin tsari (insets) yana nuna cewa duk matsayi na manyan cations Ba, Lu, da Ce an kwatanta su a fili. b) Tsarin SAED na BaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3+ da alamar alaƙa. c) HR-TEM na BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Inset shine haɓakar HR-TEM. d) SEM na BaLu1.9 (Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Inset shine histogram girman rabon barbashi.
Hoto 3
a) Tashin hankali da watsawa na BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(0 ≤ x ≤ 1.2). Inset hotuna ne na BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) karkashin hasken rana. b) Matsayi mafi girma da bambancin FWHM tare da haɓaka x don BaLu1.94 (MgxAl4-2xSi1 + x) O12: 0.06Ce3 + (0 ≤ x ≤ 1.2). c) Ƙwararren ƙididdiga na waje da na ciki na BaLu1.94(MgxAl4−2xSi1+x) O12:0.06Ce3+ (0 ≤ x ≤ 1.2). d) Luminescence lallausan ɓarna na BaLu1.94 (MgxAl4−2xSi1+x) O12: 0.06Ce3+ (0 ≤ x ≤ 1.2) lura da iyakar fitar da su (λex = 450 nm).
Hoto 4
a–c) Taswirar da ke dogara da yanayin zafi na BaLu1.94 (MgxAl4−2xSi1+x) O12: 0.06Ce3+ (x = 0, 0.6 da 1.2) phosphor ƙarƙashin 450 nm tashin hankali. d) Ƙarfin fitar da BaLu1.94 (MgxAl4−2xSi1+x) O12:0.06Ce3+ (x = 0, 0.6 da 1.2) a yanayin zafi daban-daban. e) Tsarin daidaitawa na Kanfigareshan. f) Arrhenius dacewa da ƙarfin fitarwa na BaLu1.94 (MgxAl4−2xSi1 + x) O12: 0.06Ce3 + (x = 0, 0.6 da 1.2) a matsayin aikin dumama.
Hoto 5
a) Siffar watsawa na BaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3 + karkashin blue LDs tashin hankali tare da daban-daban na gani ikon yawa. Inset shine hoton dabaran phosphor da aka ƙera. b) Haske mai haske. c) Canjin juzu'i. d) Daidaiton launi. e) CCT bambance-bambancen na tushen hasken da aka samu ta hanyar sakawa BaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3 + tare da blue LDs a daban-daban ikon yawa. f) Siffofin watsawa na BaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3 + a ƙarƙashin LDs shuɗi tare da ƙarfin ƙarfin gani na 25.2 W mm-2. Inset shine hoton farin haske da aka samar ta hanyar haskaka dabaran rawaya phosphor mai launin shuɗi LDs tare da ƙarfin ƙarfin 25.2 W mm−2.
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Lokacin aikawa: Dec-30-2024