Synthesis of Nanocrystals of Long Persisting Phosphor by Modified Combustion Technique

TL;DR

This paper presents a modified combustion method for synthesizing nanocrystalline long persistent SrAl2O4:Eu2+, Dy3+ phosphor, enabling rapid, large-scale production with improved dopant incorporation and nanostructure properties.

Contribution

It introduces a modified combustion synthesis process that enhances dopant homogeneity and scalability for nanophosphor production compared to traditional methods.

Findings

Successful synthesis of nanocrystalline phosphor with long persistence.

Homogeneous dopant distribution achieved in short synthesis time.

Nanophosphor exhibits desirable structural and luminescent properties.

Abstract

Synthesis and characterization of Nanocrystalline long persistent SrAl2O4:Eu2+, Dy3+ phosphor via a modified combustion process has been presented in the paper. In this synthesis process, a mixture of respective metal nitrates, flux and combustible agent (urea/camphor) were thermally treated with slight modification at 400-600oC for about 5 minutes. It resulted in low-density voluminous mass in contrast to a solid lump by conventional solid-state method. The present work reports the changes made in the combustion process to achieve the homogenous incorporation of dopants and large-scale production of the nanophosphor in a short interval of time. The samples have been characterized for nanophase, structural and luminescent properties. PACS Code: 33.50.-j, 33.50.Dq, 78.55.-m, 68.37.Hk