Sensitization of Sn2+ on Tb3+ luminescence for deep UV excitation in phosphate glasses

Lei Li; Yang Wang; Duojin Wang; Jian Qi; Fanshu Xia; Huidan Zeng; Guorong Chen

doi:10.3788/COL201614.071601

Journals >Chinese Optics Letters >Volume 14 >Issue 7 >Page 071601 > Article

Chinese Optics Letters
Vol. 14, Issue 7, 071601 (2016)

Sensitization of Sn²⁺ on Tb³⁺ luminescence for deep UV excitation in phosphate glasses

Lei Li, Yang Wang, Duojin Wang, Jian Qi, Fanshu Xia, Huidan Zeng, and Guorong Chen^*

Author Affiliations

Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

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DOI: 10.3788/COL201614.071601 Cite this Article Set citation alerts

Lei Li, Yang Wang, Duojin Wang, Jian Qi, Fanshu Xia, Huidan Zeng, Guorong Chen. Sensitization of Sn²⁺ on Tb³⁺ luminescence for deep UV excitation in phosphate glasses[J]. Chinese Optics Letters, 2016, 14(7): 071601 Copy Citation Text

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Fig. 1. PLE spectra of G1-G3 monitored, respectively, at (a) 421/542 nm and at (b) 488 nm.

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Fig. 2. (a, b) PL spectra and (c) simplified energy level diagrams of Sn2+ and Tb3+.

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Fig. 3. Decay curves of G1-G3.

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Fig. 4. PL spectra of (a) G3-G6 and (b) G3, G7-G9, and (c) a CIE chromaticity diagram for G1-G3 and G9-G10 together with photos of luminescent samples.

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Samples	G1	G2	G3	G4	G5	G6	G7	G8	G9	G10
${Tb}^{3 +}$	0.2	0.0	0.2	0.2	0.2	0.2	0.4	0.6	0.8	0.8
${Sn}^{2 +}$	0.0	2.0	2.0	1.5	1.0	0.5	2.0	2.0	2.0	1.0

Table 1. Extra Tb, SnO Doping Concentrations (mol.%)

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	PL Decay Rate Measurements
Sample Code	$λ_{exc}$ (nm)	$λ_{em}$ (nm)	$τ$
G1	375	542	2.89 ms
G1	282	542	2.88 ms
G2	270	421	6.34 μs
G3	375	542	2.99 ms
	2823	542	2.94 ms
	270	421	6.32 μs
G4	282	542	3.05 ms
G5			2.96 ms
G6			3.01 ms
G7	270	421	6.32 μs
G8			6.39 μs
G9			6.33 μs

Table 2. Equivalent Decay Times of Sn2+ (421 nm) and Tb3+ (542 nm) Emissions for Samples G1-G9

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	CIE Chromaticity Coordinates
Sample Codes	$λ_{exc} (nm)$	Coordinates
G1	375, 282	(0.261,0.443), (0.283, 0.395)
G2	270, 282	(0.180,0.173), (0.172, 0.144)
G3	282	(0.183, 0.182)
G4	282	(0.187, 0.191)
G5	282	(0.191, 0.202)
G6	282	(0.196, 0.217)
G7	282	(0.192, 0.215)
G8	282	(0.200, 0.241)
G9	282	(0.207, 0.265)
G10	282	(0.230, 0.339)