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Synthesis and luminescence characteristics of nano-sized YAG : Ce phosphors by homogeneous precipitation method

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2017, 27(1), pp.18-21
  • DOI : 10.6111/JKCGCT.2017.27.1.018
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Published : February 28, 2017

Chul Woo Lee 1 Kwon Seok Bin 1 Ji Eun Kyung 1 Song YoungHyun 1 정병우 2 김은영 2 정몽권 3 YOON, DAEHO 1

1성균관대학교
2LG전자 소재기술원
3효성기술원

Accredited

ABSTRACT

In this study, spherical monodispersed cerium-doped yttrium aluminum garnet (YAG : Ce 3+ ) phosphor particles were synthesized via homogeneous precipitation method using the mixed solution of yttrium nitrate, cerium nitrate, aluminum nitrate, ammonium aluminum sulfate, and urea as a precipitant. During the process of precursors of monodispersed YAG : Ce 3+ , aluminum ions which form spherical aluminum compounds precipitated first and yttrium compounds precipitated onto the surface of the existing spherical aluminum compounds. Drying process using lyophilization could obtain monodispered spherical YAG : Ce 3+ particles compare to using oven. The thermal calcination process of YAG : Ce 3+ precursors under the temperature of 1200 o C for 6 h was enough to obtain 400~500 nm sized YAG particles with pure YAG phase.

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