高等学校化学学报

高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (3): 509.doi: 10.7503/cjcu20120844

• 研究论文: 无机化学 • 上一篇    下一篇

近紫外激发Sm3+与Sr2+, Ba2+, Bi3+共掺杂的La1/3NbO3的发光性质

杜燕燕1, 黄科科1, 张佳旗1, 王楚楚2, 初学峰1, 侯长民1, 冯守华1   

  1. 1. 吉林大学无机合成与制备化学国家重点实验室, 长春 130012;
    2. 吉林大学生命科学学院, 长春 130012
  • 收稿日期:2012-09-14 出版日期:2013-03-10 发布日期:2013-02-18
  • 通讯作者: 冯守华,男,博士,教授,博士生导师,中国科学院院士,主要从事无机合成化学研究.E-mail:shfeng@mail.jlu.edu.cn E-mail:shfeng@mail.jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:90922034,21131002)和高等学校博士学科点专项科研基金(批准号:20110061130005)资助.

Photoluminescence Properties of La1/3NbO3：Sm3+ Codoped with Sr2+, Ba2+ and Bi3+ Under Near-UV Excitation

DU Yan-Yan1, HUANG Ke-Ke1, ZHANG Jia-Qi1, WANG Chu-Chu2, CHU Xue-Feng1, HOU Chang-Min1, FENG Shou-Hua1   

  1. 1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China;
    2. College of Life Science, Jilin University, Changchun 130012, China
  • Received:2012-09-14 Online:2013-03-10 Published:2013-02-18
  • Contact: Shou-Hua FENG E-mail:shfeng@mail.jlu.edu.cn

PDF (PC)

摘要：

通过高温固相反应合成了La1/3NbO3:Sm3+荧光粉. 样品的荧光光谱表明, La1/3NbO3:Sm3+荧光粉最强的激发带在406 nm, 对应于Sm3+的6H5/2→4K11/2跃迁, 属于近紫外区(365～410 nm). 当激发波长为406 nm时, 样品的最强发射峰位于596 nm, 是由Sm3+的4G5/2→6H7/2跃迁而产生的. 因此, La1/3NbO3:Sm3+可以作为基于近紫外激发的白光发光二极管(LED)的红光材料. 而且, La位共掺杂Sr2+, Ba2+和Bi3+使样品的荧光强度大大增加, 在最佳掺杂浓度时的量子产率分别为5.4%, 7.5%和5.3%.

关键词: 荧光光谱, 白光发光二极管(LED), 固态照明, 电荷补偿剂, La1/3NbO3

Abstract:

La1/3NbO3:Sm3+ phosphor was synthesized by solid state reaction at high temperature and its photoluminescence properties were investigated. Its strongest excitation band is at 406 nm, ascribed to 6H5/2→4K11/2 transition of Sm3+ in the range of near-ultraviolet region(NUV, 365-410 nm). And its strongest emission peak is at 596 nm, attributed to 4G5/2→6H7/2 transition of Sm3+. As a result, La1/3NbO3:Sm3+ phosphor shows great potential for future application as alternative red-emitting NUV-based white LEDs. The luminescence intensity can be strongly enhanced by codoping cation in the La-site, namely Sr2+, Ba2+ and Bi3+. And the quantum yield is 5.4%, 7.5% and 5.3% for Sr2+, Ba2+ and Bi3+ codoped samples respectively with the optimum doping concentration.

Key words: Photoluminescence spectrum, White light emitting diode(LED), Solid-state lighting, Charge compensation agent, La1/3NbO3

中图分类号: 

TrendMD: