荧光粉
发光
分析化学(期刊)
光致发光
材料科学
显色指数
发光二极管
掺杂剂
色温
发射光谱
光谱学
化学
兴奋剂
谱线
光电子学
物理
天文
量子力学
色谱法
作者
Luong Van Duong,Doan Dinh Phuong,Hong‐Ro Lee
出处
期刊:한국표면공학회지
[The Korean Institute of Surface Engineering]
日期:2015-10-31
卷期号:48 (5): 211-217
标识
DOI:10.5695/jkise.2015.48.5.211
摘要
To fabricate white LED having a high color rendering index value, red color phosphor mixed with the green color phosphor together in the blue chip, namely the blue chips with RG phosphors packaging is most favorable for high power white LEDs. In our previous papers, we reported on successful syntheses of $Sr_{2-}$ $Si_5N_8:Eu^{2+}$ and $CaAlSiN_3$ phosphors for red phosphor. In this work, for high power green phosphor, greenemitting ternary nitride $Ba_3Si_6O_{12}N_2:Eu^{2+}$ phosphor was synthesized in a high frequency induction furnace under $N_2$ gas atmosphere at temperatures up to $1400^{\circ}C$ using $EuF_3$ as a raw material for $Eu^{2+}$ dopant. The effects of molar ratio of component and experimental conditions on luminescence property of prepared phosphors have been investigated. The structure and luminescence properties of prepared $Ba_3Si_6O_{12}N_2:Eu^{2+}$ phosphors were investigated by XRD and photoluminescence spectroscopy. The excitation spectra of $Ba_3Si_6O_{12}N_2:Eu^{2+}$ phosphors indicated broad excitation wavelength range of 250 - 500 nm, namely from UV to blue region with distinct enhanced emission spectrum peaking at ${\approx}530nm$.
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