Synthesis and luminescent properties of a new green CaZrO₃: Ho³+long persistent phosphors
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초록
Novel green long persistent phosphors of CaZrO₃: Ho³+ have been synthesized at high temperature with weakreduction atmosphere by traditional solid state reaction method. The role of H₃BO₃ as flux and the suitable concentration of Ho as activator on the CaZrO₃: Ho³+ long persistent phosphors has been investigated. Crystals of Ho³+ doped CaZrO₃longpersistent phosphores were characterized by fluorescence spectrophotometer and photoluminescence (PL). The main emissionspectra of 546 nm peak was revealed through synthesizing at high temperature in N₂gas atmosphere. The afterglowemission spectra of CaZrO₃: Ho³+ long persistent phosphores arise at 546 nm peak of narow range. because that revealedpure gren color. Green long persistent phosphors have been observed in the system for over 5 h after UV irradiation(254 nm). The main emission peak was ascribed to Ho³+ ions transition from 5F4, 5S2 →5I3, and the afterglow may be3 host lattice.
Abstract
Novel green long persistent phosphors of CaZrO₃: Ho³+ have been synthesized at high temperature with weakreduction atmosphere by traditional solid state reaction method. The role of H₃BO₃ as flux and the suitable concentration of Ho as activator on the CaZrO₃: Ho³+ long persistent phosphors has been investigated. Crystals of Ho³+ doped CaZrO₃longpersistent phosphores were characterized by fluorescence spectrophotometer and photoluminescence (PL). The main emissionspectra of 546 nm peak was revealed through synthesizing at high temperature in N₂gas atmosphere. The afterglowemission spectra of CaZrO₃: Ho³+ long persistent phosphores arise at 546 nm peak of narow range. because that revealedpure gren color. Green long persistent phosphors have been observed in the system for over 5 h after UV irradiation(254 nm). The main emission peak was ascribed to Ho³+ ions transition from 5F4, 5S2 →5I3, and the afterglow may be3 host lattice.
참고문헌 (13)
- Y. Kamiyanagi, "Temperature dependence of long-lasting afterglow in SrAl2O4 : Eu,Dy phosphor", J. Lumin, 122-123, pp.509~511 (2007)
- Y. Jia, "Stress-induced mechanoluminescence in SrAl2O4: Eu 2+ ,Dy 3+", Opti. Mater, 28, pp.974~ (2006)
- O. Arellano-Tanoria, "Persistent luminescence dosimetric properties of UV-irradiated SrAl2O4: Eu 2+ ,Dy 3+ phosphor", J. Lumin, 128, pp.173~ (2008)
- S. Abe, "Luminescent properties of red long persistence phosphors, BaMg2Si2O7: Eu 2+ ,Mn 2+", J. Alloy. Compounds, 911 (2005)
- F. Song, "Synthesis of Sr2MgSi2O7: Eu,Dy and Sr2MgSi2O7 : Eu,Dy, Nd by a modified solid-state reaction and their luminescent properties", J. Alloy. Compounds, 458, pp.564~ (2008)
- B. Lei, "Preparation and luminescence properties of CaSnO3: Sm 3+ phosphor emitting in the reddish orange region", Opti. Mater, 29, pp.1491~ (2007)
- phosphors-Role of co-dopants in search for afterglow, "Materials Research Bulletin", 2008, ~
- 황구현, "A study on the luminescence characterization of red long persistent phosphors by the B₂O₃ addition", 한국결정성장학회지, 18(1), pp.22~26 (2008), 한국결정성장학회
- Z. Liu, "Long afterglow in Pr 3+ and Li + co-doped CaZrO3", Opt. Communications, 251, pp.388~ (2005)
- 박병석, "Synthesis and luminescent properties of Er³+ doped CaZrO₃long persistent phosphors", 한국결정성장학회지, 18(1), pp.27~32 (2008), 한국결정성장학회
- J. Lia, "Growth and optical properties of Ho,Yb : YAl3(BO3)4 crystal", J. Crys. Growth, 256, pp.324~ (2003)
- A. Nag, "Role of B2O3 on the phase stability and long phosphorescence of SrAl2O4: Eu,Dy", J. Alloy. Compounds, 354, pp.221~ (2003)
- L. Feng, "Optical properties of Ho 3+ -doped novel oxyfluoride glasses", J. Lumin, 124, pp.187~ (2007)