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Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors

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Published on: November 15, 2016

Novel blue-emitting SrMg2Al16O27:Eu2+ phosphor for solid-state lighting.

V B Pawade¹, S J Dhoble

¹Department of Applied Physics, VNIET, Nagpur, 440023, India.

Luminescence : the Journal of Biological and Chemical Luminescence

|June 3, 2011

Summary

A novel blue-emitting phosphor, Strontium Magnesium Aluminate doped with Europium (SrMg(2)Al(16)O(27):Eu(2+)), was synthesized. Its photoluminescence properties were characterized and compared to commercial phosphors.

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Area of Science:

Materials Science
Solid-State Chemistry
Luminescence

Background:

Development of novel phosphors is crucial for advanced lighting and display technologies.
Europium-activated aluminates are promising candidates for blue-emitting phosphors.
Efficient synthesis methods are needed to produce high-quality phosphors.

Purpose of the Study:

To synthesize and characterize a novel Europium-activated Strontium Magnesium Aluminate phosphor (SrMg(2)Al(16)O(27):Eu(2+)).
To investigate the photoluminescence properties, including excitation and emission spectra.
To compare the performance of the synthesized phosphor with a commercial blue-emitting phosphor.

Main Methods:

Combustion synthesis method at 550°C.
X-ray diffraction (XRD) for phase purity analysis.
Scanning Electron Microscopy (SEM) for morphology.
Photoluminescence spectroscopy for optical properties.

Main Results:

Phase-pure SrMg(2)Al(16)O(27):Eu(2+) phosphor was successfully synthesized.
Broad-band excitation at 324 nm and blue emission centered at 465 nm were observed.
The emission corresponds to the 4f(6) 5d(1) → 4f(7) electronic transition of Eu(2+).

Conclusions:

The synthesized SrMg(2)Al(16)O(27):Eu(2+) is a promising blue-emitting phosphor.
Its photoluminescence characteristics are suitable for potential applications in lighting and displays.
Further research can optimize synthesis and explore performance enhancements.