UWang Deyin ovela kwiYunivesithi yaseLanzhou @ Wang Yuhua LPR uthatha indawo yeBaLu2Al4SiO12 ngeMg2+- Si4+izibini Ukukhanya okuluhlaza okutsha okunemincili etyheli ekhupha umgubo wefluorescent BaLu2 (Mg0.6Al2.8Si1.6) O12: ICe3+yalungiswa kusetyenziswa iAl3+- Al3+izibini kwiCe3+ , kunye nokusebenza kakuhle komyinge wangaphandle (EQE) we 66.2%. Kwangaxeshanye njenge-redshift yokukhutshwa kwe-Ce3 +, oku kutshintshwa kukwandise ukukhutshwa kwe-Ce3 + kwaye kunciphise ukuzinza kwayo okushushu.
IYunivesithi yaseLanzhou iWang Deyin kunye neWang Yuhua LPR ithatha indawo yeBaLu2Al4SiO12 ngeMg2+- Si4+izibini: Ukukhanya okuluhlaza okutsha okunemincili etyheli ekhupha umgubo wefluorescent BaLu2 (Mg0.6Al2.8Si1.6) O12: Ce3+yalungiswa kusetyenziswa iAl3+- Al3+izibini kwiCe3+ , kunye nokusebenza kakuhle komyinge wangaphandle (EQE) we 66.2%. Kwangaxeshanye njenge-redshift yokukhutshwa kwe-Ce3 +, oku kutshintshwa kukwandise ukukhutshwa kwe-Ce3 + kwaye kunciphise ukuzinza kwayo okushushu. Utshintsho lwe-spectral lubangelwa ukutshintshwa kwe-Mg2 + - Si4 +, ebangela ukuba utshintsho kwi-crystal field yendawo kunye ne-positional symmetry ye-Ce3 +.
Ukuvavanya ukubanakho kokusebenzisa iphosphors ekhanyayo etyheli esanda kuphuhliswa yokukhanya kwelaser yamandla aphezulu, zakhiwa njengamavili ephosphor. Ngaphantsi kwe-irradiation ye-laser eluhlaza kunye noxinano lwamandla lwe-90.7 W mm - 2, ukukhanya okukhanyayo komgubo ophuzi we-fluorescent yi-3894 lm, kwaye akukho nto icacileyo yokuzalisa i-emission. Ukusebenzisa i-laser diodes eluhlaza okwesibhakabhaka (i-LDs) kunye noxinzelelo lwamandla angama-25.2 W mm - 2 ukuvuyisa amavili e-phosphor aphuzi, ukukhanya okumhlophe okukhanyayo kuveliswa ngokukhanya kwe-1718.1 lm, ukushisa kombala ohambelanayo we-5983 K, isalathisi sombala we-65.0, kunye nolungelelwaniso lombala we (0.3203, 0.3631).
Ezi ziphumo zibonisa ukuba iiphosphors zeluminescent ezisandula ukwenziwa zinamandla amakhulu kwizicelo zokukhanyisa eziqhutywa ngelaser.
Umfanekiso woku-1
Ubume beCrystal yeBaLu1.94(Mg0.6Al2.8Si1.6)O12:0.06Ce3+ijongwe ecaleni kwe-b-axis.
Umfanekiso wesi-2
a) umfanekiso we-HAADF-STEM we-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. Ukuthelekisa kunye nemodeli yesakhiwo (i-insets) ibonisa ukuba zonke izikhundla ze-cations ezinzima i-Ba, i-Lu, kunye ne-Ce zichazwe ngokucacileyo. b) Ipateni ye-SAED ye-BaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3 + kunye nesalathisi esihambelanayo. c) I-HR-TEM ye-BaLu1.9(Mg0.6Al2.8Si1.6)O12: 0.1Ce3+. I-inset yi-HR-TEM eyandisiweyo. d) SEM yeBaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+. I-inset yi-histogram yonikezelo lobungakanani besuntswana.
Umfanekiso wesi-3
a) I-Excitation kunye ne-emission spectra ye-BaLu1.94 (MgxAl4−2xSi1 + x) O12: 0.06Ce3 + (0 ≤ x ≤ 1.2). Inset ziifoto zeBaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) phantsi kokukhanya kwasemini. b) Isikhundla esiphezulu kunye nokuhluka kwe-FWHM ngokunyuka kwe-x ye-BaLu1.94 (MgxAl4−2xSi1 + x) O12: 0.06Ce3+ (0 ≤ x ≤ 1.2). c) Ukusebenza kwe-quantum yangaphandle nangaphakathi ye-BaLu1.94 (MgxAl4−2xSi1 + x) O12: 0.06Ce3 + (0 ≤ x ≤ 1.2). d) I-Luminescence decay curves ye-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (0 ≤ x ≤ 1.2) ukubeka esweni ukukhutshwa kwayo okuphezulu (λex = 450 nm).
Umzobo 4
a–c) Imephu yecontour yobushushu obuxhomekeke kwi-spectra ephumayo ye-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+(x = 0, 0.6 kunye ne-1.2) iphosphor phantsi kwe-450 nm excitation. d) Ubungakanani bokukhutshwa kwe-BaLu1.94(MgxAl4−2xSi1+x)O12:0.06Ce3+ (x = 0, 0.6 kunye ne-1.2) kumaqondo okushisa ahlukeneyo. e) Umzobo wolungelelwaniso lolungelelwaniso. f) Ukufakwa kwe-Arrhenius yobunzima bokukhutshwa kwe-BaLu1.94 (MgxAl4−2xSi1+x) O12: 0.06Ce3+ (x = 0, 0.6 kunye ne-1.2) njengomsebenzi wokushisa ukushisa.
Umfanekiso wesi-5
a) Ukukhutshwa kwe-spectra ye-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+phantsi kwe-blue LDs i-excitation ene-optical power densities ezahlukeneyo. I-inset yifoto yevili elenziwe ngephosphor. b) Ukuguquguquka okukhanyayo. c) Uguqulo olunempumelelo. d) Ulungelelwaniso lombala. e) Iinguqu zeCCT zomthombo wokukhanyisa ophunyezwe yi-irradiation BaLu1.9 (Mg0.6Al2.8Si1.6) O12: 0.1Ce3+ kunye ne-LDs eluhlaza kumandla ahlukeneyo oxinaniso. f) Ukukhutshwa kwe-spectra ye-BaLu1.9(Mg0.6Al2.8Si1.6)O12:0.1Ce3+ phantsi kwe-blue LDs excitation enoxinano lwamandla e-25.2 W mm−2. I-inset yifoto yokukhanya okumhlophe okuveliswe yi-irradiated ivili lephosphor elityheli elinee-LDs eziluhlaza kunye noxinzelelo lwamandla angama-25.2 W mm-2.
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Ixesha lokuposa: Dec-30-2024