荧光粉
背光
材料科学
光致发光
光电子学
发光二极管
二极管
兴奋剂
绿灯
光学
波长
分析化学(期刊)
蓝光
化学
液晶显示器
物理
色谱法
作者
Le Doan Duy,My Hanh Nguyen Thi,Hoang Thinh Nhan
出处
期刊:Indonesian Journal of Electrical Engineering and Computer Science
[Institute of Advanced Engineering and Science]
日期:2023-10-01
卷期号:32 (1): 114-114
标识
DOI:10.11591/ijeecs.v32.i1.pp114-120
摘要
The (Ba,Ca)ScO2F:Bi3+,K+ phosphor with narrow emission band and green emission color peaking at 510 nm is demonstrated in the study. This phosphor is prepared using a solid-state reaction at high temperatures. Based on characterizing data, the increasing concentration of Ca2+ induces the shrinkage of the unit cell and the narrower spacing, leading to the increase in the photoluminescence of the phosphor. This also cause a red shift in the emitting range from 504 nm to 510 nm. The phosphor shows good absorption peaking at 415 nm, matching the excitation wavelength of the used nearultraviolet (UV) light emitting diode (LED) chip. When being applied in a white light‐emitting diodes (WLED) with 4,000 K, the phosphor could increase the luminous flux as its doping concentration increase. Besides, the WLED doping (Ba, Ca) ScO2F: Bi3+, K+ shows emission regions in blue, green, and red wavelength bands. The data from the study indicates that the phosphor is potential for developing the white-LED for backlight purposes.
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