Single-phased white-light phosphors Ca9Gd(PO4) 7:Eu2+, Mn2+ under near-ultraviolet excitation

Chien Hao Huang; Wei Ren Liu; Teng-Ming Chen

doi:10.1021/jp106693z

Single-phased white-light phosphors Ca₉Gd(PO₄) ₇:Eu²⁺, Mn²⁺ under near-ultraviolet excitation

Chien Hao Huang, Wei Ren Liu^*, Teng-Ming Chen

^*Corresponding author for this work

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

193 Scopus citations

Abstract

Single-phased white-light-emitting phosphors Ca₉Gd(PO ₄)₇:Eu²⁺, Mn²⁺ were synthesized by solid state reactions. Tuning the Eu²⁺/Mn²⁺ ratio via the energy transfer varied the emission hue of Ca₉Gd(PO₄) ₇:0.007Eu²⁺, Mn²⁺ from blue-greenish (0.219, 0.371) to white-light (0.326, 0.328) and eventually to red (0.625, 0.307). The mechanism of transferring energy from a sensitizer Eu²⁺ to an activator Mn²⁺ in Ca₉Gd(PO₄) ₇:Eu²⁺, Mn²⁺ phosphors was demonstrated to be an electric dipole-quadrupole interaction. Combining a near-UV 380 nm chip and a white-emitting Ca₉Gd(PO₄)₇:0.007Eu ²⁺, 0.02 Mn²⁺ phosphor produced a white-light near-UV LED, demonstrating CIE chromaticity coordinates of (0.312, 0.327) and a color temperature of 6569 K.

Original language	English
Pages (from-to)	18698-18701
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	114
Issue number	43
DOIs	https://doi.org/10.1021/jp106693z
State	Published - 4 Nov 2010

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@article{059798ac86704501b518cd0a4be6f175,

title = "Single-phased white-light phosphors Ca9Gd(PO4) 7:Eu2+, Mn2+ under near-ultraviolet excitation",

abstract = "Single-phased white-light-emitting phosphors Ca9Gd(PO 4)7:Eu2+, Mn2+ were synthesized by solid state reactions. Tuning the Eu2+/Mn2+ ratio via the energy transfer varied the emission hue of Ca9Gd(PO4) 7:0.007Eu2+, Mn2+ from blue-greenish (0.219, 0.371) to white-light (0.326, 0.328) and eventually to red (0.625, 0.307). The mechanism of transferring energy from a sensitizer Eu2+ to an activator Mn2+ in Ca9Gd(PO4) 7:Eu2+, Mn2+ phosphors was demonstrated to be an electric dipole-quadrupole interaction. Combining a near-UV 380 nm chip and a white-emitting Ca9Gd(PO4)7:0.007Eu 2+, 0.02 Mn2+ phosphor produced a white-light near-UV LED, demonstrating CIE chromaticity coordinates of (0.312, 0.327) and a color temperature of 6569 K.",

author = "Huang, {Chien Hao} and Liu, {Wei Ren} and Teng-Ming Chen",

year = "2010",

month = nov,

day = "4",

doi = "10.1021/jp106693z",

language = "English",

volume = "114",

pages = "18698--18701",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "43",

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TY - JOUR

T1 - Single-phased white-light phosphors Ca9Gd(PO4) 7:Eu2+, Mn2+ under near-ultraviolet excitation

AU - Huang, Chien Hao

AU - Liu, Wei Ren

AU - Chen, Teng-Ming

PY - 2010/11/4

Y1 - 2010/11/4

N2 - Single-phased white-light-emitting phosphors Ca9Gd(PO 4)7:Eu2+, Mn2+ were synthesized by solid state reactions. Tuning the Eu2+/Mn2+ ratio via the energy transfer varied the emission hue of Ca9Gd(PO4) 7:0.007Eu2+, Mn2+ from blue-greenish (0.219, 0.371) to white-light (0.326, 0.328) and eventually to red (0.625, 0.307). The mechanism of transferring energy from a sensitizer Eu2+ to an activator Mn2+ in Ca9Gd(PO4) 7:Eu2+, Mn2+ phosphors was demonstrated to be an electric dipole-quadrupole interaction. Combining a near-UV 380 nm chip and a white-emitting Ca9Gd(PO4)7:0.007Eu 2+, 0.02 Mn2+ phosphor produced a white-light near-UV LED, demonstrating CIE chromaticity coordinates of (0.312, 0.327) and a color temperature of 6569 K.

AB - Single-phased white-light-emitting phosphors Ca9Gd(PO 4)7:Eu2+, Mn2+ were synthesized by solid state reactions. Tuning the Eu2+/Mn2+ ratio via the energy transfer varied the emission hue of Ca9Gd(PO4) 7:0.007Eu2+, Mn2+ from blue-greenish (0.219, 0.371) to white-light (0.326, 0.328) and eventually to red (0.625, 0.307). The mechanism of transferring energy from a sensitizer Eu2+ to an activator Mn2+ in Ca9Gd(PO4) 7:Eu2+, Mn2+ phosphors was demonstrated to be an electric dipole-quadrupole interaction. Combining a near-UV 380 nm chip and a white-emitting Ca9Gd(PO4)7:0.007Eu 2+, 0.02 Mn2+ phosphor produced a white-light near-UV LED, demonstrating CIE chromaticity coordinates of (0.312, 0.327) and a color temperature of 6569 K.

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