Spectroscopic properties of nanopowder Y2O3:Ti 3+ , Eu3+

Abstract

Abstract:

Y₂O₃:Ti³⁺, Eu³⁺ nanopowder was prepared by co-precipitation method in N2 and H2 atmosphere. Its XRD, excitation and emission spectra were measured, its morphology was observed. By analysis and comparison of spectra to Y2O3:Ti3+,Eu3+ and Y2O3:Ti3+, it was discovered that there exists energy transfer process from Ti3+ ions to Eu3+ ions, so Eu3+ ions can be excited by ultraviolet or blue light and emit fluorescence peaks at about 610nm via 5D0→7F2 transition channel etc. As a result the fluorescence in the red and orange light area is strengthened, therefore luminescence properties of the powder may be adjusted. The excitation spectrum of Y2O3:Ti3+,Eu3+ nanopowder extends from ultraviolet to blue-green region, and the strong fluorescence covers entire visible light region. It indicates that Y2O3:Ti3+,Eu3+ nanopowder is expected to be a new generation light conversion phosphor for white LED or mercury lamp.

Key words: materials, phosphor, nanopowder

CLC Number:

O433

ZENG Guiping, YAO Li, DONG Qiang, Bao Weitao. Spectroscopic properties of nanopowder Y₂O₃:Ti³⁺, Eu³⁺[J]. J4, 2011, 28(2): 147-151.

References

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Spectroscopic properties of nanopowder Y₂O₃:Ti³⁺, Eu³⁺

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