Chinese Optics, Volume. 15, Issue 2, 224(2022)
Luminescence enhancement mechanism of Er3+ ions by Ag@SiO2 core-shell nanostructure in tellurite glass
Fig. 2. Absorption spectrum of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm) @Er3+(0.5%):TeZnLa glass (blue line A) and (B) Er(0.5%):TeZnLa glass (red line B) when measured from 270 nm to 1800 nm
Fig. 3. Absorption spectrum of the Ag(1.50×10−3 mol/L)@SiO2(40 nm) solution sample when measured from 290 nm to 800 nm
Fig. 4. Schematic diagram of the energy level structure and luminescence enhancement process induced by the surface plasmon of the Er3+Ag0: TeZnLa sample. The blue line, red line and green lines represent the absorption, luminescence and resonant scatter enhancement process respectively.
Fig. 5. The visible excitation spectra of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass (blue line A) and (B) Er(0.5%):TeZnLa glass (red line B) from 280 nm to 538 nm when monitored at 550 nm
Fig. 6. The infrared excitation spectra of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass ((blue line A) and (B) Er(0.5%):TeZnLa glass (red line B) from 280 nm to 850 nm when monitored at 1531 nm
Fig. 7. The visible luminescence spectra of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass (blue line A) and (B) Er(0.5%):TeZnLa sample (red line B) from 395 nm to 718 nm when excited by 378.0 nm
Fig. 8. The infrared luminescence spectra of (A) Ag(1.6×10−6 mol/L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass (blue line A) and (B) Er(0.5%):TeZnLa glass (red line B) from 918 nm to 1680 nm when excited by 378.0 nm
Fig. 9. The fluorescence lifetime of (A) Ag(1.6×10−6 mol /L)@SiO2(40 nm)@Er3+(0.5%):TeZnLa glass (blue dots A) and (B) Er(0.5%):TeZnLa glass (red dots B) at 550 nm luminescent wavelength were measured using a 378.0 nm pulsed xenon lamp as the pump source
Table 1. The luminescence intensity and the enhancement factor of the visible and infrared luminescence of sample A and sample B
View tableView in ArticleTable 1. The luminescence intensity and the enhancement factor of the visible and infrared luminescence of sample A and sample B
激发波长/nm 发光强度×105 增强数 样品A 样品B 546.0 nm 546.0 nm 546.0 nm 1531.0 nm 546.0 nm 1531.0 nm 378.0 2.261 58.22 1.501 38.80 150.6% 150.1% 406.5 0.222 − 0.143 − 155.2% − 520.5 2.090 51.49 1.376 33.96 151.9% 151.6%
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Xiao-bo CHEN, Song LI, Guo-ying ZHAO, Hong-Zhen LIU, Jing-hua GUO, Yu MA, Ke-zhi WANG, Zhu-feng GENG. Luminescence enhancement mechanism of Er3+ ions by Ag@SiO2 core-shell nanostructure in tellurite glass[J]. Chinese Optics, 2022, 15(2): 224
Category: Original Article
Received: Jul. 17, 2021
Accepted: Nov. 18, 2021
Published Online: Mar. 28, 2022
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