Energy transfer from Bi3+ to Ho3+ triggers brilliant single green light emission in LaNbTiO6:Ho3+, Bi3+ phosphors

Xingshuang Zhang; Guangjun Zhou; Juan Zhou; Haifeng Zhou; Peng Kong; Zhichao Yu; Jie Zhan

doi:10.1039/C3RA47833E

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Energy transfer from Bi³⁺ to Ho³⁺ triggers brilliant single green light emission in LaNbTiO₆:Ho³⁺, Bi³⁺ phosphors†

Xingshuang Zhang,^a Guangjun Zhou,*^a Juan Zhou,^b Haifeng Zhou,^a Peng Kong,^a Zhichao Yu^a and Jie Zhan^a

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* Corresponding authors

^a State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
E-mail: gjzhou@sdu.edu.cn
Fax: +86 531 88361206

^b Center for Disease Prevention and Control of Jinan Military Command, Jinan 250014, P. R. China

Abstract

Excitation of Ho³⁺ and Bi³⁺ co-doped LaNbTiO₆ particles with 453 nm blue light gave an intense single green glow. All the phosphors were synthesized via a facile sol–gel and combustion approach, and the crystal structure, particle morphology, photoluminescence (PL) properties of the phosphors and energy transfer between Bi³⁺ and Ho³⁺ were also investigated. The large spectral overlap between the broad emission band of Bi³⁺ around 425–570 nm and the excitation band of Ho³⁺ supports the efficient energy transfer from Bi³⁺ to Ho³⁺, which enhances the PL intensity remarkably. When the PL intensity is considered, the best composition for producing green light is LaNbTiO₆:4 mol% Ho³⁺, 2 mol% Bi³⁺. The luminescence mechanisms of Ho³⁺ doped and Ho³⁺/Bi³⁺ co-doped in the LaNbTiO₆ host were also discussed.

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Article information

DOI: https://doi.org/10.1039/C3RA47833E
Article type: Paper
Submitted: 20 Dec 2013
Accepted: 25 Feb 2014
First published: 28 Feb 2014

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RSC Adv., 2014,4, 13680-13686

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Energy transfer from Bi³⁺ to Ho³⁺ triggers brilliant single green light emission in LaNbTiO₆:Ho³⁺, Bi³⁺ phosphors

X. Zhang, G. Zhou, J. Zhou, H. Zhou, P. Kong, Z. Yu and J. Zhan, RSC Adv., 2014, 4, 13680 DOI: 10.1039/C3RA47833E

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