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Open Access Luminescence properties and energy transfer behavior of BaLaGa3O7: Pr3+,Tb3+ phosphors for ultraviolet excited white light-emitting diodes

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The Pr3+/Tb3+-BaLaGa3O7 color-controllable phosphors were synthesized by a facile high-temperature solidstate reaction technique. The X-ray diffraction patterns, the photoluminescence excitation (PLE) spectra and photoluminescence (PL) spectra were measured to characterize the prepared phosphors. Under the ∼280 nm excitation, the characteristic emissions of Pr3+,Tb3+ and Pr3+/Tb3 ions were observed. Moreover, the emission color of the BaLaGa3O7: Pr3+,Tb3+ phosphors was tuned to white by adjusting the Tb3+ ion concentration. The PL spectra revealed that there is an efficient energy transfer (ET) from Tb3+ to Pr3+ ions and the ET efficiency was found to be as high as 61.9%. These obtained white light-emitting BaLaGa3O7: Pr3+,Tb3+ phosphors were expected to be a potential candidate for phosphor converted white light-emitting diode applications.

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Keywords: ENERGY TRANSFER; LUMINESCENCE; PHOSPHORS; RARE-EARTH

Document Type: Research Article

Publication date: August 1, 2018

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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