Перевод заглавия: Образование фаз желтых люминофоров микрокристалл-стекло для белых светодиодов с накачкой синим цветом
Рубрики:
LUMINESCENCE
EVOLUTION
Кл.слова (ненормированные):
Phosphor -- WLED -- Photoluminescence -- Cathodoluminescence
LUMINESCENCE
EVOLUTION
Кл.слова (ненормированные):
Phosphor -- WLED -- Photoluminescence -- Cathodoluminescence
Аннотация: The (Y,Ce)2BaAl4SiO12 phosphor, a garnet-structured blue-to-yellow color convertor for WLED, exhibits an interesting “microcrystal-glass powder” feature, which can be regarded as the 4th form for phosphor, in addition to the “ceramic powder phosphor”, the “single crystal phosphor” and the “glass-ceramic phosphor”. The structure exhibits luminescent microcrystals embedding in non-luminescent glass matrix: the spherical crystals are mainly arranged around the glass phase forming a “necklace” pattern, while the individual crystals show a “core-shell” architecture regarding the luminescence intensity variation. Further combining the phase evolution evidence evaluated by Rietveld refinement, we propose the formation mechanism for such unique morphology/structure as a two-stage process, including an initial nucleation by solid state reaction and following liquid-assisted crystal growth, instead of a precipitation-crystallization process.
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Держатели документа:
China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China.
Natl Inst Mat Sci, Sialon Grp, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan.
Natl Inst Mat Sci, Nano Device Characterizat Grp, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan.
China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Zhejiang, Peoples R China.
RAS, SB, KSC, Lab Crystal Phys,Kirensky Inst Phys,Fed Res Ctr, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Xiamen Univ, Coll Mat, Xiamen, Peoples R China.
Доп.точки доступа:
Ji, Haipeng; Cho, Yujin; Wang, L.e.; Hirosaki, Naoto; Molokeev, M. S.; Молокеев, Максим Сергеевич; Huang, Zhaohui; Xie, Rong-Jun