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Phosphors for Fluorescent Lamp Applications

Author(s):
J. Jeyabuvaneswari , CK COLLEGE OF ENGINEERING AND TECHNOLOGY; Dr. A. John Peter, ST.ANNES COLLEGE OF ENGINEERING AND TECHNOLOGY

Keywords:
Phosphors, Fluorescent Lamp

Abstract

A green-emitting phosphor CaMoO4 co-doped by Tb3+ was fabricated by solid-state metathesis reaction route for the first time. X-ray powder diffraction (XRD) analysis revealed that pure CaMoO4 was obtained .Under excitation of UV light, these CaMoO4:x Tb3+phosphors showed a strong emission band centered at 547 nm (green) which corresponds to 5D4→7F5 transition of Tb3+. Analysis of the emission spectra with different Tb3+ concentrations revealed that the optimum dopant concentration for CaMoO4: x Tb3+phosphors are about 8 mol% of Tb3+. All properties show that CaMoO4: x Tb3+is a very appropriate green–emitting phosphor for fluorescent lamp applications.

Other Details
Paper ID: IJSRDV7I11160
Published in: Volume : 7, Issue : 1
Publication Date: 01/04/2019
Page(s): 1786-1787

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