Fabrication and Photoluminescence Characteristics of Eu³⁺-Doped Lu₂O₃ Transparent Ceramics

Authors: Chen, Qiwei; Shi, Ying; An, Liqiong; Chen, Jiyang; Shi, Jianlin

Source: Journal of the American Ceramic Society, Volume 89, Number 6, June 2006 , pp. 2038-2042(5)

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Abstract:

A novel co-precipitation process was adopted for the preparation of highly sinterable europium-doped lutetia powders using ammonium hydroxide (NH₃·H₂O) and ammonium hydrogen carbonate (NH₄HCO₃) as the mixed precipitant. The resultant powders calcined at 1000°C for 2 h showed good dispersity and excellent sinterability. Highly transparent polycrystalline lutetia ceramics with a relative density of ∼99.9% were fabricated by pressureless sintering in flowing H₂ atmosphere at 1850°C for 6 h without any additives. The average grain sizes of the transparent material were estimated to be 50–60 μm. Optical in-line transmittance in the visible wavelength region for Lu₂O₃ ceramics (1 mm in thickness) reached 80%. The luminescence and decay behavior of the obtained transparent plate and the corresponding nanophosphors were also investigated.

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2006.01016.x

Affiliations: 1: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Publication date: 2006-06-01