Co-precipitation synthesis and photoluminescence properties of (GdxLa1-x) PO4:5 at.%Eu3+ orange-red emitting phosphors

  • Shakir Ullah
  • Yuanquan Feng
  • Min Zhu
  • Huilin Kong
  • Shijia Sun
  • Chao Dou
  • Fei Zheng
  • Jie Tang
  • Degao ZhongEmail author
  • Bing TengEmail author


Orange-red light emitting Eu3+ (5 at.%) doped GdxLa1−xPO4 (x = 1.0, 0.9, 0.7, 0.5, 0.3, 0.1, 0.0) phosphors with various concentrations were synthesized via chemical co-precipitation method at a calcination temperature of 1000 °C for 5 h was presented. The synthesized phosphors were characterized via XRD, PL, FT-IR, SEM and CIE respectively. The XRD analysis confirms that the prepared phosphors in a monazite monoclinic system with a space group P21/n(14). The PL spectra of (GdxLa1−x)PO4:0.05%Eu3+ phosphors were measured at 250 nm excitation wavelength. The most dominant emission peak of Eu3+ for 5D0 → 7F1 transition located at 597 nm, which is magnetic dipole transition, is responsible for emission of orange-red light. The SEM was carried out to understand the surface morphological feature and grain sizes. According to the experimental outcome, it was indicated that these phosphors have appropriate CIE, suitable color correlated temperature parameter, valuable life-time, and appreciable purity of color, which comparable with the reported rear-earth ions doped orange-red light phosphors. The results show that these orange-red emitting phosphors may have a potential application on the white light-emitting diode and other related electronic systems, which is observing the picture in orange-red color.



Financial support from the National Natural Science Foundation of China (Grant Nos. 11204148 and 11374170), major basic research projects of Shandong Natural Science Foundation (ZR2018ZB0650), China Postdoctoral Science Foundation (Grant No. 2015M580573), the Applied Basic Research Programs for Youths of Qingdao (Grant No. 15-9-1-52-JCH) and the Qingdao Postdoctoral Application Research Project (Grant no. 2015127) are gratefully acknowledged. The author also would like to thank the support of Taishan Scholar Program of Shandong Province.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of PhysicsUniversity-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao UniversityQingdaoChina
  2. 2.National Demonstration Center for Experiment Applied Physics Education (Qingdao University)QingdaoChina
  3. 3.Shandong Provincial University Key Laboratory of Optoelectrical Material Physics and DevicesQingdaoChina

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