Wang Deyin anobva kuLanzhou University @ Wang Yuhua LPR anotsiva BaLu2Al4SiO12 neMg2+- Si4+peya Chiedza chitsva cheblue chinofadza chero emitting fluorescent poda BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+yakagadzirwa pachishandiswa Al3+- Al3+ pairs muCe3+ , ine ekunze quantum kunyatsoshanda (EQE) ye 66.2%. Panguva imwecheteyo se redshift yeCe3 + emission, kutsiva uku kunowedzerawo kubuda kweCe3 + uye kunoderedza kugadzikana kwayo kwekupisa.
Lanzhou University Wang Deyin & Wang Yuhua LPR inotsiva BaLu2Al4SiO12 neMg2+- Si4+ pairs: Chiedza chitsva chebhuruu chinofadza yellow emitting fluorescent poda BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+yakagadzirirwa uchishandisa Al3+- Al3+ pairs muCe3+ , ine ekunze quantum kunyatsoshanda (EQE) ye 66.2%. Panguva imwecheteyo se redshift yeCe3 + emission, kutsiva uku kunowedzerawo kubuda kweCe3 + uye kunoderedza kugadzikana kwayo kwekupisa. Iko kushanduka kwemaitiro kunokonzerwa nekutsiviwa kweMg2 + - Si4 +, iyo inokonzera kuchinja munharaunda yekrisiti yemunharaunda uye symmetry yenzvimbo yeCe3 +.
Kuongorora kugona kwekushandisa ichangobva kugadzirwa yeyero luminescent phosphors yekuvhenekesa-simba laser illumination, iwo akavakwa semavhiri ephosphor. Pasi pekuvhenekerwa kweblue laser ine simba density ye90.7 W mm − 2, iyo inopenya inoyerera yeyero fluorescent poda ndeye 3894 lm, uye hapana pachena emission saturation phenomenon. Uchishandisa blue laser diodes (LDs) ine simba density ye25.2 W mm − 2 kufadza yellow phosphor mavhiri, mwenje muchena wakajeka unogadzirwa nekupenya kwe1718.1 lm, tembiricha yeruvara yakabatana ye5983 K, indekisi yeruvara ye65.0, uye coordinates zvemavara zve (0.3203, 0.3631).
Mhedzisiro iyi inoratidza kuti ichangobva kugadzirwa yero luminescent phosphors ine yakakosha mukana mune yakakwirira-simba laser inofambiswa nemwenje maapplication.
Mufananidzo 1
Crystal chimiro cheBaLu1.94(Mg0.6Al2.8Si1.6)O12:0.06Ce3+inotariswa pamwe chete ne-b-axis.
Mufananidzo 2
a) HAADF-STEM mufananidzo weBaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Kuenzanisa neiyo chimiro modhi (inset) inoratidza kuti ese zvinzvimbo zveanorema cations Ba, Lu, uye Ce akanyatso fananidzirwa. b) SAED muenzaniso weBaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3 + uye indexing yakabatana. c) HR-TEM yeBaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Inset ndiyo yakawedzerwa HR-TEM. d) SEM yeBaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Inset ndiyo histogram saizi yekugovera saizi.
Mufananidzo 3
a) Kukurudzira uye kubuda kwemaitiro eBaLu1.94 (MgxAl4−2xSi1+x) O12: 0.06Ce3+ (0 ≤ x ≤ 1.2). Inset mifananidzo yeBaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) masikati machena. b) Nzvimbo yepamusoro uye kuchinja kweFWHM nekuwedzera x yeBaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2). c) Kunze uye mukati quantum kubudirira kweBaLu1.94 (MgxAl4−2xSi1 + x) O12: 0.06Ce3 + (0 ≤ x ≤ 1.2). d) Luminescence decay curves yeBaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) vachitarisa kuburitsa kwavo kwakanyanya (λex = 450 nm).
Mufananidzo 4
a–c) Contour mepu yetembiricha inotsamira emission spectra yeBaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(x = 0, 0.6 uye 1.2) phosphor pasi pe450 nm excitation. d) Emission intensity yeBaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 uye 1.2) pakupisa kwakasiyana-siyana. e) Kugadzirisa kurongeka dhayagiramu. f) Arrhenius inokodzera kusimba kwekubuda kweBaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 uye 1.2) sebasa rekupisa kupisa.
Mufananidzo 5
a) Emission spectra yeBaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+pasi peblue LDs excitation ine akasiyana optical power densities. Inset mufananidzo weiyo yakagadzirwa phosphor vhiri. b) Kupenya kunopenya. c) Kushandura kushanda zvakanaka. d) Kuronga kwemavara. e) CCT misiyano yenzvimbo yekuvhenekesa inowanikwa neirradiation BaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3+ ine blue LDs pamagetsi akasiyana-siyana. f) Emission spectra yeBaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ pasi peblue LDs excitation ine optical power densities ye25.2 W mm-2. Inset ndiwo mufananidzo wechiedza chichena chakagadzirwa neradiation yeyero phosphor vhiri ine yebhuruu maLD ane simba re 25.2 W mm-2.
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Nguva yekutumira: Zvita-30-2024