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Erschienen in:
30.11.2018
Controllable white light generation from novel BaWO4: Yb3+/Ho3+/Tm3+ nanophosphor by modulating sensitizer ion concentration
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 2/2019
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Abstract
Generation of white light requires a proficient strategy for appropriate mixing of red, green and blue emissions in appropriate proportion through optimization of material composition. However, it is quite challenging to develop a single host material showing emission in full visible region, which can be excited by a single excitation source. Herein, a series of Yb3+-sensitized Ho3+/Tm3+ co-doped BaWO4 nanophosphors synthesized by hydrothermal method is reported. The effect of different concentration of sensitizer ion (Yb3+) on the luminescence properties of BaWO4:Yb3+/Ho3+/Tm3+ crystal is investigated in detail to obtain white light. The phosphors exhibited red, green and blue luminescence centered at 651 nm, 539 nm and 482 nm respectively under a 980 nm excitation. The obtained novel nanophosphor could be a major potential candidate for nanobiotechnology and optoelectronics device applications.