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静电纺丝方法制备CaTiO3∶Er3+微米带及其上转换发光性质

彭冲1,2,杨冬梅1,2,李国岗1,2,连洪洲1,林君1*   

  1. (1.中国科学院长春应用化学研究所，稀土资源利用国家重点实验室 长春 130022；2.中国科学院大学 北京 100049)
  • 收稿日期:2012-09-26 修回日期:2012-10-10 出版日期:2012-12-10 发布日期:2012-12-10
  • 通讯作者: LIN Jun, professor; Tel:0431-85262031; Fax:0431-85698041; E-mail:jlin@ciac.jl.cn; Research Interests：luminescent materials
  • 基金资助:
    Supported by National Natural Science Foundation(51172227, 20921002)

Electrospinning Fabrication and Upconversion Luminescent Properties of CaTiO3∶Er3+ Microbelts

PENG Chong1,2, YANG Dongmei1,2, LI Guogang1,2, LIAN Hongzhou1, LIN Jun1*   

  1. (1.State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of
    Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;
    2.University of Chinese Academy of Sciences,Beijing 100049,China)
  • Received:2012-09-26 Revised:2012-10-10 Published:2012-12-10 Online:2012-12-10

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摘要： CaTiO3∶Er3+微米带由静电纺丝方法制备。 用X射线衍射、傅里叶变换红外光谱、拉曼光谱、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜（HRTEM）和上转换发光表征所制备的样品。 SEM和TEM测试证实所得前躯体微米带尺寸均一，烧后得到的微米带是由纳米粒子组成的。 在980 nm激光激发下，CaTiO3∶Er3+样品发出绿光，绿光发射峰位于546 nm，可归属于Er3+离子的4S3/2→4I15/2跃迁。 当Er3+离子的掺杂浓度提高，因为Er3+离子之间的能量传递，红光发射相对于绿光发射增强。

关键词: 上转换, 静电纺丝, 微米带, 铒

Abstract: One-dimensional CaTiO3∶Er3+ microbelts have been prepared by electrospinning method. X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, scanning electron microscopy(SEM), transmission electron microscopy(TEM), high-resolution transmission electron microscopy(HRTEM), up-converted luminescence were used to characterize the resulting samples. SEM and TEM analysis indicate that the obtained precursor belts have a uniform size, and the as-formed microbelts consist of nanoparticles. Under 980 nm laser beam excitation, the CaTiO3∶Er3+ samples exhibit a green emission band with a maximum at 546 nm originating from the 4S3/2→4I15/2 transitions of Er3+ ions. When the Er3+ concentration increases, the red emission of CaTiO3∶Er3+ increases relative to the green emission, which is due to the energy transfer between Er3+ ions.

Key words: upconversion, electrospinning, microbelts, erbium

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