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发明公开
CN102618262A 一种紫光激发的可调光荧光材料及其制备方法 无效 - 驳回

一种紫光激发的可调光荧光材料及其制备方法
摘要：
该发明公开了一种紫光激发的可调光荧光材料及其制备方法，该材料其化学表达式如下：Sr3-(x+y)MzSi1-zO5:Cex3+，Euy2+，其中M为B3+、Al3+和Ga3+中的一种或两种，0≤x≤0.1，0≤y≤0.1，0≤z≤0.1，在400nm～450nm的区间有很强的激发，在发射峰主峰为在530nm～580nm的范围有很强的发射，且其发射主峰位置可从530nm调节至580nm，色坐标可从(0.342，0.518)调节至(0.415，0.486)；与420nm紫光LED芯片匹配后，色温可从8500K调节至3700K，可根据实际需求制成冷白光至暖白光多种白光LED，在相同发射强度下，其原料成本不到标准YAG:Ce3+的1/10；且在200℃下荧光强度为室温下的85％，可用于白光LED照明荧光粉，也可用于液晶显示器背光源荧光粉，使得该材料具有广泛的应用前景。
摘要（英）：

The invention discloses a purple light excited dimmable fluorescent material and a preparation method. The chemical expression formula of the purple light excited dimmable fluorescent material is shown as follow: Sr3-(x+y)MzSi1-z05: Cex3+EuY2+, wherein the M is one of B3+, Al3+ and Ga3+, the x is larger than or equal to 0 and smaller than or equal to 0.1, the y is larger than or equal to 0 and smaller than or equal to 0.1, and the z is larger than or equal to 1.0 and smaller than or equal to 0.1. The purple light excited dimmable fluorescent material can be excited well within 400nm to 450nm, the main emission peak emits within 530nm to 580nm, the position of the main emission peak can be adjusted from the 530nm to 580nm, chromaticity coordinate can be adjusted from (0.342, 0.518) to (0.415, 0.486); color temperature can be adjusted from 8500K to 3700K after being matched with 420nm purple light LED chips, white-light LEDs from cold white light to warm white light can be manufactured according to practical needs, cost of raw materials is not more than 1/10 of the standard YAG: Ce3+ on the premise of the same emission strength, and fluorescent strength at the temperature 200 DEG C is 85% of that at the room temperature. The purple light excited dimmable fluorescent material can be used for making lighting fluorescent powder for white-light LEDs and backlight sources of liquid crystal displays and has wide application prospect.

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