Preparation and Luminescent Properties of Tb³⁺ Doped Bi₂WO₆ Phosphor

Abstract:

The Tb³⁺doped Bi₂WO₆ luminescent materials are synthesized by a co-precipitation method. The structure and composition of the samples were characterized by DTA-TG and XRD. The results showed that the formula of the sample is Bi₂WO₆ at the temperature of 600°C~900°C, which belongs to the needed and stable orthorhombic ctystal. The luminescence properties were characterized by UV-vis and fluorescence spectrophotometer. The results showed that, the phosphor can be effectively stimulated by blue light of 488 nm, we can get the intense green-emission, which corresponds to the ⁵D₄→⁷F₅ transitions of Tb³⁺. It indicates that the samples match the light-emitting wavelength of the common blue-emitting InGaN chips and are expected to be applicable to a new type of green-emission light conversion materials which are applicable to the blue LED chips.

• Periodical: Applied Mechanics and Materials (Volume 851)
• Pages: 72-77
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.851.72
• Online since: August 2016
• Authors: Li Na Guo*, Sha Ren
• Keywords: Bi₂WO₆:Tb³⁺, Green Phosphor, Luminescence Properties

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