摘要
采用水热法制备复合基质Y_(x)Gd_((1-x))BO_(3):Eu3^(+)荧光粉,以提升红色荧光粉的发光强度和量子效率。研究不同x值对Y_(x)Gd_((1-x))BO_(3):Eu3^(+)荧光粉形貌、发光性能与物相结构的影响,并在最佳的x取值下进行K^(+)离子掺杂制备出不同K^(+)离子掺杂量的Y_(x)Gd_((1-x))BO_(3):Eu3^(+):K^(+)荧光粉。采用X射线衍射仪、场发射扫描电子显微镜和荧光光谱仪等对样品进行表征。结果表明:当x为0.6时,Y_(x)Gd_((1-x))BO_(3):Eu3^(+)荧光粉的发光性能最好,发光强度与YBO_(3):Eu3^(+)和GdBO_(3):Eu3^(+)荧光粉相比分别提高了39.47%和75.77%,量子效率与YBO_(3):Eu3^(+)和GdBO_(3):Eu3^(+)荧光粉相比分别提高了60.53%和93.11%;当K^(+)的掺杂量为1%时,Y0.6Gd0.4BO_(3):Eu3^(+):K^(+)荧光粉的发光性能最好,掺杂后发光强度提高了55.73%,量子效率提高了49.83%。该研究表明适量的K^(+)离子的掺入可以改善Y_(x)Gd_((1-x))BO_(3):Eu3^(+)荧光粉的光致发光性能。
In order to improve the luminescent property and quantum efficiency of red phosphors,the author prepared composite matrix Y_(x)Gd_((1-x))BO_(3):Eu3^(+)phosphors by hydrothermal method.The effects of different x values on the morphology,luminescent property and phase structure of Y_(x)Gd_((1-x))BO_(3):Eu3^(+)phosphors were studied.Based on the best x value,different numbers of K^(+)ions were doped to prepare Y_(x)Gd_((1-x))BO_(3):Eu3^(+):K^(+)phosphors.The samples were characterized by X-ray diffractometry(XRD),field emission scanning electron microscopy(FESEM)and X-ray fluorescence(XRF)spectrometry,etc.The results showed that when x was 0.6,Y_(x)Gd_((1-x))BO_(3):Eu3^(+)phosphors had the best luminescent property.Compared with YBO_(3):Eu3^(+)and GdBO_(3):Eu3^(+)phosphors,the luminescent property increased by 39.47%and 75.77%,respectively.Compared with YBO_(3):Eu3^(+)and GdBO_(3):Eu3^(+)phosphors,the quantum efficiency grew by 60.53%and 93.11%,respectively.When the doping content of K^(+)was 1%,Y0.6Gd0.4BO_(3):Eu3^(+):K^(+)phosphors had the best luminescent property.After doping,the luminescent property increased by 55.73%and the quantum efficiency increased by 49.83%.The results show that the doping of an appropriate number of K^(+)ions can improve the photoluminescence performance of Y_(x)Gd_((1-x))BO_(3):Eu3^(+)phosphors.
作者
张永飞
吴光杰
康硕
喻志奎
王龙成
ZHANG Yongfei;WU Guangjie;KANG Shuo;YU Zhikui;WANG Longcheng(School of Materials Science&Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《浙江理工大学学报（自然科学版）》
2021年第4期445-452,共8页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
浙江省基础工艺研究计划项目(LGG20E02001)。
