U-Wang Deyin waseLanzhou University @ Wang Yuhua LPR esikhundleni se-BaLu2Al4SiO12 nge-Mg2+- Si4+pair Ukukhanya okusha okuluhlaza okwesibhakabhaka okujabulile okuphuzi okukhipha impuphu ye-fluorescent BaLu2 (Mg0.6Al2.8Si1.6) O12: I-Ce3+yalungiswa kusetshenziswa i-Al3+- Al3+amapheya ku-Ce3+ , ngokusebenza kahle kwe-quantum yangaphandle (EQE) ye 66.2%. Ngesikhathi esifanayo nokukhishwa okubomvu kwe-Ce3+emission, lokhu kufakwa esikhundleni kuphinde kunwebe ukukhishwa kwe-Ce3+ futhi kunciphisa ukuzinza kwayo okushisayo.
I-Lanzhou University Wang Deyin & Wang Yuhua LPR ingena esikhundleni se-BaLu2Al4SiO12 nge-Mg2+- Si4+pair: Ukukhanya okusha okuluhlaza okwesibhakabhaka okujabulile okuphuzi okukhipha impuphu ye-fluorescent BaLu2 (Mg0.6Al2.8Si1.6) O12: I-Ce3+yalungiswa kusetshenziswa i-Al3+- Al3+amapheya ku-Ce3+ , ngokusebenza kahle kwe-quantum yangaphandle (EQE) ye 66.2%. Ngesikhathi esifanayo nokukhishwa okubomvu kwe-Ce3+emission, lokhu kufakwa esikhundleni kuphinde kunwebe ukukhishwa kwe-Ce3+ futhi kunciphisa ukuzinza kwayo okushisayo. Izinguquko ze-spectral zibangelwa ukufakwa esikhundleni kwe-Mg2 + - Si4+, okubangela izinguquko endaweni yekristalu yendawo kanye ne-positional symmetry ye-Ce3+.
Ukuhlola ukuthi kungenzeka yini ukusebenzisa i-phosphor ekhanyayo ephuzi esanda kwakhiwa ukuze kukhanye i-laser enamandla amakhulu, akhiwa njengamasondo e-phosphor. Ngaphansi kokukhanya kwe-laser eluhlaza okwesibhakabhaka enamandla amakhulu angu-90.7 W mm − 2, ukugeleza okukhanyayo kwempushana ephuzi ye-fluorescent ingu-3894 lm, futhi asikho isenzakalo esisobala sokugcwala kwe-emission. Kusetshenziswa ama-laser diode aluhlaza okwesibhakabhaka (ama-LD) anamandla amakhulu angama-25.2 W mm − 2 ukujabulisa amasondo e-phosphor aphuzi, ukukhanya okumhlophe okukhanyayo kukhiqizwa ngokukhanya okungu-1718.1 lm, izinga lokushisa lombala elihlobene elingu-5983 K, inkomba enikeza umbala engu-65.0, kanye nezixhumanisi zemibala (0.3203, 0.3631).
Le miphumela ikhombisa ukuthi amaphosphor e-luminescent ephuzi asanda kuhlanganiswa anamandla amakhulu ezinhlelweni zokukhanyisa eziqhutshwa ngamandla amakhulu.
Umfanekiso 1
Isakhiwo sekristalu se-BaLu1.94(Mg0.6Al2.8Si1.6)O12:0.06Ce3+bukwe eduze kwe-axis ye-b.
Umfanekiso 2
a) Isithombe se-HAADF-STEM se-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Uma kuqhathaniswa nemodeli yesakhiwo (okufakiwe) kuveza ukuthi zonke izikhundla zama-cations asindayo u-Ba, Lu, no-Ce zifanekiswe ngokucacile. b) Iphethini ye-SAED ye-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+kanye nenkomba ehlobene. c) I-HR-TEM ye-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Okufakiwe kuyi-HR-TEM ekhulisiwe. d) I-SEM ye-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Okufakiwe kuyi-histogram yokusabalalisa usayizi wezinhlayiyana.
Umfanekiso 3
a) I-spectra evusa amadlingozi nokuphumayo kwe-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(0 ≤ x ≤ 1.2). Okufakiwe yizithombe ze-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) emini. b) Indawo ephakeme nokuhluka kwe-FWHM ngokukhula kuka-x ku-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2). c) Ukusebenza kwe-quantum kwangaphandle nangaphakathi kwe-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2). d) Amajika okubola kwe-Luminescence we-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) eqapha ukukhishwa kwawo okuphezulu ngokulandelanayo (λex = 450 nm).
Umfanekiso 4
a–c) Imephu ekhonkolo ye-spectra ekhishwayo encike kukushisa kwe-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(x = 0, 0.6 kanye no-1.2) i-phosphor ngaphansi kwe-450 nm excitation. d) Amandla okukhishwa kwe-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 kanye no-1.2) emazingeni okushisa ahlukene. e) Umdwebo wokuhlanganisa ukucushwa. f) Ukufakwa kwe-Arrhenius kokuqina kokukhipha kwe-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 kanye no-1.2) njengomsebenzi wokushisa okushisa.
Umfanekiso 5
a) I-spectra yokukhishwa kwe-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ngaphansi kwe-LDs eluhlaza okwesibhakabhaka enokuminyana kwamandla ahlukahlukene. I-inset iyisithombe sesondo le-phosphor elakhiwe. b) Ukukhanya okukhanyayo. c) Ukusebenza kahle kokuguqulwa. d) Izixhumanisi zemibala. e) Ukuhlukahluka kwe-CCT komthombo wokukhanyisa okutholwe ngokusetshenziswa kwemisebe i-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ nama-LD aluhlaza ngokulingana kwamandla okuhlukene. f) I-spectra ekhishwayo ye-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ ngaphansi kwe-blue LDs excitation enamandla abonakalayo angu-25.2 W mm−2. Okufakiwe yisithombe sokukhanya okumhlophe esikhiqizwe isondo eliphuzi lephosphor elinama-LD aluhlaza anamandla okuminyana angu-25.2 W mm−2.
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Isikhathi sokuthumela: Dec-30-2024