Luminescence properties of Ca 5(PO 4) 2SiO 4: Eu 2+ green phosphor for near UV-based white LED

Hee Suk Roh, Seyoon Hur, Hee Jo Song, Ik Jae Park, Dong Kyun Yim, Dong-Wan Kim, Kug Sun Hong

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

A novel green phosphor of Eu 2+-doped Ca 5(PO 4) 2SiO 4 was prepared by a solid-state reaction. The Ca 5(PO 4) 2SiO 4:Eu 2+ phosphor was excited at wavelengths of 220-450 nm, which was suitable for the emission band of near ultraviolet (n-UV) light emitting diode (LED) (350-430 nm). In Ca 5(PO 4) 2SiO 4:Eu 2+ phosphor, there were three distinguishable Eu 2+ sites, which resulted in a strong green emission peaking at 530 nm and broad bands up to 700 nm. The effect of the activated Eu 2+ concentration on the photoluminescence (PL) emission intensity of the Ca 5(PO 4) 2SiO 4:Eu 2+ was also investigated. Here, a phosphor-converted LED (pc-LED) was fabricated through the integration of an InGaN-based n-UV LED and the Ca 5(PO 4) 2SiO 4:Eu 2+ phosphor. All of these characteristics indicated that this phosphor had a potential application in n-UV-based white LEDs.

Original languageEnglish
Pages (from-to)37-39
Number of pages3
JournalMaterials Letters
Volume70
DOIs
Publication statusPublished - 2012 Mar 1
Externally publishedYes

Fingerprint

Phosphors
phosphors
Light emitting diodes
Luminescence
light emitting diodes
luminescence
ultraviolet radiation
Solid state reactions
Photoluminescence
broadband
solid state
photoluminescence
Wavelength
wavelengths
Ultraviolet Rays

Keywords

  • Ca (PO ) SiO
  • Eu -doped phosphor
  • Optimum concentration
  • Photoluminescence
  • White LED

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Luminescence properties of Ca 5(PO 4) 2SiO 4 : Eu 2+ green phosphor for near UV-based white LED. / Roh, Hee Suk; Hur, Seyoon; Song, Hee Jo; Park, Ik Jae; Yim, Dong Kyun; Kim, Dong-Wan; Hong, Kug Sun.

In: Materials Letters, Vol. 70, 01.03.2012, p. 37-39.

Research output: Contribution to journalArticle

Roh, Hee Suk ; Hur, Seyoon ; Song, Hee Jo ; Park, Ik Jae ; Yim, Dong Kyun ; Kim, Dong-Wan ; Hong, Kug Sun. / Luminescence properties of Ca 5(PO 4) 2SiO 4 : Eu 2+ green phosphor for near UV-based white LED. In: Materials Letters. 2012 ; Vol. 70. pp. 37-39.
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