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Luminescence characteristics of bismuth and europium co-doped yttrium oxide red phosphor forwhite light emitting diodes

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2006, 16(3), pp.112~115
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

박우정 1,  Seok Gyu Yoon 1,  YOON, DAEHO 1,  정몽권 1

1성균관대학교

Accredited

ABSTRACT

The red emission properties of Bi 3+ co-doped Y2O3 : Eu 3+ prepared by the solid-state reaction was investigated, in order to verify its potential to act as the red emitting phosphor of white LEDs. The emission spectrum consisted of a weak band at 581, 587, 5931 and 599 nm, with maximum sharp peaks occurring at about 611 nm due to the 5 D0 → 7 F2 transition of Eu 3+ , while the excitation spectrum exhibited a broad band between 290 and 430 mm with peaks occurring in the range of 310~390 nm. Also, SEM image of the sample containing 0.43 mol% H3BO3 and 2.08 mol% BaCl2·2H2O phosphor particles grew to achieve diameters of 700~800 nm.VX

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