电子束蒸镀制备Y_(2)O_(3)∶Eu^(3+)红色发光织物及其性能研究

Study on Y_(2)O_(3)∶Eu^(3+)red luminescent fabric prepared by electron beam evaporation and its property

针对目前长波段红色发光织物制备方法存在的不足,采用电子束蒸镀在石英纤维织物表面沉积三价铕离子掺杂氧化钇(Y_(2)O_(3)∶Eu^(3+))红色发光薄膜,研究80 mA、110 mA、140 mA和170 mA不同电子束电流对发光薄膜微观结构和发光性能的影响。结果表明:电子束蒸镀能够在石英纤维表面均匀沉积纯度较高的Y_(2)O_(3)∶Eu^(3+)发光薄膜,且发光粉材料组分不会改变;随着沉积电流从110 mA增加到170 mA,薄膜厚度由0.69μm增加到1.68μm;当电流为140 mA时,发光薄膜相对更加致密、颗粒尺寸较大,在(222)晶面择优取向并且符合Y_(2)O_(3)立方相结构,结晶性能较好;Y_(2)O_(3)∶Eu^(3+)薄膜在613 nm处存在Eu3+的特征红色发射主峰,当沉积电流为140 mA时制备的Y_(2)O_(3)∶Eu^(3+)薄膜发光强度最高。认为:采用电子束蒸镀制备的Y_(2)O_(3)∶Eu^(3+)红色发光织物属于长波段红色发光纺织材料,但其发光强度仍较低、发光余辉时间较短,还需提高发光性能。

Aimed at the disadvantages of current preparation method for long-wave band red luminescent fabric,red luminescent thin films of yttrium oxide doped with trivalent europium ion(Y_(2)O_(3)∶Eu^(3+))were grown on a quartz fabric substrate by using electron beam evaporation.The influence of different electron beam current including 80 mA,110 mA,140 mA and 170 mA on microstructures and luminescent properties of luminous films were studied.The experimental results showed that electron beam evaporation could uniformly deposit high purity Y_(2)O_(3)∶Eu^(3+)luminous films on the surface of quartz fiber without changing the composition of luminous powder material.The thickness of the films was increased from 0.69μm to 1.68μm when the deposition current was increased from 110 mA to 170 mA.When electric current was 140 mA,the luminous film was more tight and with larger particles.Y_(2)O_(3)cubic phase structure could be met on(222)crystal surface preferred orientation.The crystallization property was better.Y_(2)O_(3)∶Eu^(3+)films had Eu^(3+)characteristic red emission peak at 613 nm.When the deposition current was 140 mA,Y_(2)O_(3)∶Eu^(3+)red luminescent fabric prepared by electron beam evaporation had the highest luminescence intensity.It is considered that Y_(2)O_(3)∶Eu^(3+)red luminescent film prepared by electron beam evaporation belongs to the long-wave band red luminescent textile material.However,the luminescent intensity is still low and the luminescent afterglow time is short.The luminescent properties need to be improved in the future study.