Synthesis of Tb3+-Doped Ca-Deficient Hydroxyapatite and its Photoluminescence for White Light-Emitting Diode Application

Zhan Hui Zhang; Han Wang; Li Chen; De Xing Guo; Ke Qin Cai; Xiao Jun Liu; Zhi Liang Huang

doi:10.4028/www.scientific.net/AMR.560-561.825

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 560-561Synthesis of Tb3+-Doped Ca-Deficient...

Synthesis of Tb³⁺-Doped Ca-Deficient Hydroxyapatite and its Photoluminescence for White Light-Emitting Diode Application

Abstract:

Green-emitting Tb3+-doped Ca-deficient hydroxyapatite phosphor was successfully prepared from natural collophanite. The effects of (Tb+Ca)/P values on the crystal phases and luminescent properties of the prepared products were discussed. XRD results revealed that Ca-deficient hydroxyapatite was a biphase compound of hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP), and its crystal phase transformed to HA with the increasing values of (Tb+Ca)/P. Photoluminescence measurements showed that the products presented intensely green emission peaking at 545 nm under near-ultraviolet excitation and the luminescent intensity had great correlation with the content ratios of β-TCP to HA. When (Tb+Ca)/P=1.3, the luminescent intensity of Tb3+-doped Ca-deficient hydroxyapatite reached the maximum value, which was much stronger than that of Tb3+-doped HA. These results indicate that Tb3+-doped Ca-deficient hydroxyapatite phosphor is suitable for potential application in white light-emitting diode (LED).

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Periodical:

Advanced Materials Research (Volumes 560-561)

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825-829

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.560-561.825

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Online since:

August 2012

Authors:

Zhan Hui Zhang, Han Wang, Li Chen, De Xing Guo, Ke Qin Cai, Xiao Jun Liu, Zhi Liang Huang

Keywords:

Hydroxyapatite (HAP), Luminescent Properties, Phosphor, White Light-Emitting Diode

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