Hydrothermal synthesis and photoluminescence of novel green-emitting phosphor Y{sub 1-x}BO{sub 3}:xTb{sup 3+}

Journal Article · Thu Aug 10 04:00:00 EDT 2006 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2005.05.031· OSTI ID:20895257

Yuhua, Wang ^[1]; Chunfang, Wu ^[2]; Jiachi, Zhang ^[2]

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1. Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, GanSu Province 730000 (China) and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, GanSu Province 730000 (China)
2. Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, GanSu Province 730000 (China)

Y{sub 1-x}BO{sub 3}:xTb{sup 3+} phosphors were first synthesized by hydrothermal reaction, and the samples were characterized by X-ray powder diffractometry, infrared absorption, nuclear magnetic resonance, scanning electron microscopy and photoluminescence. The results show that single phase is obtained with Tb concentration up to 0.28 and all the samples exhibit flake-like morphology. The sample was determined to be vaterite-type orthoborate and the boron is both four-coordinated (chief) and three-coordinated (few). The Y{sub 1-x}BO{sub 3}:xTb{sup 3+} phosphors showed intense green emission at 550 nm and the intensity of the emission increases with Tb{sup 3+} substitution up to 0.22 and then decreases for higher Tb{sup 3+} content. In the phosphors prepared by the hydrothermal method the concentration quenching is higher than in the phosphors prepared by solid-state reaction; the intensity of emission is stronger in the former than that of the latter. Y{sub 1-x}BO{sub 3}:xTb3{sup +} is a promising phosphor for plasma display panels and hydrargyrum-free lamps.

• OSTI ID: 20895257
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 8 Vol. 41; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORATES
HYDROTHERMAL SYNTHESIS
MERCURY
MORPHOLOGY
NUCLEAR MAGNETIC RESONANCE
PHOSPHORS
PHOTOLUMINESCENCE
QUENCHING
SCANNING ELECTRON MICROSCOPY
TERBIUM IONS
X-RAY DIFFRACTION