Related Experiment Video
Updated: May 30, 2026
07:03
Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors
Published on: November 15, 2016
A tunable single-component warm white-light Sr3Y(PO4)3:Eu2+,Mn2+ phosphor for white-light emitting diodes
Ning Guo1, Yeju Huang, Mei Yang
1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
Physical Chemistry Chemical Physics : PCCP
|July 21, 2011
Summary
Europium (Eu2+) and Manganese (Mn2+) co-doped phosphors emit white light via energy transfer. Adjusting Mn2+ content tunes emission color, enabling single-component white LEDs.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Luminescence
Background:
- Phosphors are crucial for light-emitting diodes (LEDs).
- Tuning photoluminescence properties is key for advanced lighting applications.
- Eu2+ and Mn2+ doping offers versatile emission characteristics.
Purpose of the Study:
- Investigate photoluminescence and energy transfer in Eu2+ and Mn2+ co-doped Sr3Y(PO4)3 phosphors.
- Explore the potential for single-component white-light emission.
- Determine the energy transfer mechanism between Eu2+ and Mn2+.
Main Methods:
- Synthesized Sr3Y(PO4)3 phosphors doped with Eu2+ and Mn2+.
- Characterized photoluminescence properties under UV excitation.
- Analyzed fluorescence decay curves using the Inokuti-Hirayama model.
Main Results:
- Observed distinct emission bands for Eu2+ and Mn2+ due to efficient energy transfer.
- Achieved tunable emission chromaticity by varying Mn2+ concentration.
- Demonstrated warm white-light emission from a single host lattice.
- Identified dipole-quadrupole interaction as the primary energy transfer mechanism.
Conclusions:
- Sr3Y(PO4)3:Eu2+, Mn2+ phosphors exhibit efficient UV-to-white light conversion.
- Tunable emission and white-light generation are achievable by controlling doping concentrations.
- These phosphors are promising for single-component white LED applications.
Related Concept Videos
01:14Photoluminescence: Applications
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
01:23Photoluminescence: Fluorescence and Phosphorescence
Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
A pair of electrons in a...