发光学报, 2017, 38 (11): 1469, 网络出版: 2017-12-25
KLa(MoO4)2∶Yb3+,Ho3+,Tm3+白光荧光粉的制备及性能研究
Preparation and Properties of KLa(MoO4)2∶Yb3+,Ho3+,Tm3+ White Phosphors
摘要
采用水热法成功制备了Yb3+,Ho3+,Tm3+三掺的多晶KLa(MoO4)2荧光粉。在980 nm激光激发下, KLa(MoO4)2∶Yb3+,Ho3+,Tm3+发出裸眼可见的明亮白光, 这其中包括Tm3+离子发出的蓝光(~475 nm)、Ho3+离子发出的绿光(~540 nm)和红光(~651 nm)。根据色度坐标系计算得出的坐标点可以看出, 随着Ho3+/Tm3+掺杂浓度之比的增加, KLa(MoO4)2∶Yb3+,Ho3+,Tm3+所发出的白光呈现从冷白光到暖白光的变化。最后详细讨论了KLa(MoO4)2∶Yb3+,Ho3+,Tm3+荧光粉可能的发光机制。
Abstract
The polycrystalline KLa(MoO4)2∶Yb3+,Ho3+,Tm3+ phosphors were synthesized by the simple hydrothermal method. Under the excitation of 980 nm laser, KLa(MoO4)2∶Yb3+,Ho3+,Tm3+ phosphors show bright white upconversion emission visible to the naked eyes, which composes of blue emission at ~475 nm from Tm3+, green and red emission at ~540 nm and ~651 nm from Ho3+. The experiment results show that the coordinates of KLa(MoO4)2∶Yb3+,Ho3+,Tm3+ in the commission international CIE chromaticity diagram can be controlled from cool to warm white color depending on the rate of Ho3+/Tm3+ concentrations.
张玉红, 何蕙羽, 刘航, 吴芳, 王勃. KLa(MoO4)2∶Yb3+,Ho3+,Tm3+白光荧光粉的制备及性能研究[J]. 发光学报, 2017, 38(11): 1469. ZHANG Yu-hong, HE Hui-yu, LIU Hang, WU Fang, WANG Bo. Preparation and Properties of KLa(MoO4)2∶Yb3+,Ho3+,Tm3+ White Phosphors[J]. Chinese Journal of Luminescence, 2017, 38(11): 1469.