Effect of Ag nanoparticles on the radiative properties of tellurite glasses doped with Er3+, Yb3+ and Tm3+ ions

Silva, G.H.; Holgado, D. P. A.; Anjos, Virgílio de Carvalho dos; Bell, M.J.V.; Kassab, L.R.P.; Amâncio, Carlos Taveira; Moncorgé, R.

doi:10.1016/j.optmat.2014.06.009

Cited by 22 publications

(6 citation statements)

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“…Even with a low concentration (fraction volume of 1.7%), the presence of the silver particles of 10 nm diameter induced an increase of 20% in the thermal diffusivity of the germanate glass. Thus, the silver NPs, besides contributing to the luminescence of the RE ions and nonlinear optical improvements [3][4][5][6][7][8], also improve the thermal properties of the glass.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, the growth of metallic nanoparticles (NP) inside germanate glasses has been achieved by thermal treatment of the samples. It has been verified that the presence of silver and gold NPs contribute to enhanced luminescence efficiency and nonlinear optical improvements [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 93%

“…where F w is the mass fraction of particles dispersed in the matrix, r p and r m are the densities of the nanoparticles and the base matrix, respectively. The density of the germanate glass was found experimentally by Archimedes' principle, which provided a value of 5.8 g/cm 3 . The existence of the silver NPs was confirmed by TEM images, shown in Fig.…”

Section: Absorption Spectra and Microscope Imagesmentioning

confidence: 99%

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Thermal and structural analysis of germanate glass and thin films co-doped with silver nanoparticles and rare earth ions with insights from visible and Raman spectroscopy

Carvalho

Freitas

Silva

et al. 2016

Vibrational Spectroscopy

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This paper reports on the thermal and optical properties of germanate glasses GeO 2-PbO co-doped with silver nanoparticles and rare earth ions (Tm 3+ , Er 3+ and Yb 3+) with a focus on the thermal diffusivity (D). The presence of rare earth ions and nanoparticles is evidenced by absorption spectra and TEM images, respectively. Additionally, a structural comparison between thin films and bulk glass with the same nominal composition is given. It is found that D increases up to 20% in samples where nanoparticles are present, although their quantity corresponds only to a volume fraction of 1.7%. Therefore, such enhancement could be associated with the nanoparticles. Nevertheless, a Raman analysis revealed a structural change after the thermal treatment used for the nucleation of the nanoparticles. A decrease in the intensity of the band at 534 cm À1 in the Raman spectra is interpreted as the disruption of the 3-membered rings of the GeO 4 tetrahedra. The Raman analysis also revealed the formation of small crystals of a-GeO 2 type quartz and the adsorption of carbon dioxide on the surface of the silver nanoparticles inserted in the germanate thin film. 2016 Elsevier B.V. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Section: Absorption Spectra and Microscope Imagesmentioning

confidence: 99%

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Thermal and structural analysis of germanate glass and thin films co-doped with silver nanoparticles and rare earth ions with insights from visible and Raman spectroscopy

Carvalho

Freitas

Silva

et al. 2016

Vibrational Spectroscopy

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“…Our previous work also proposed that the transition‐metal Cr 3+ or semimetal Bi with a broad absorption from visible to near‐infrared (NIR) and a well‐matched overlapping between their absorption and emission spectra can be adopted for obtaining an enhanced 2 μm luminescence of Tm 3+ . Similarly, some researchers found that noble metals (eg, Ag and Au) may have a significant lanthanide luminescence enhancement effect, but the related sensitization mechanism still needs to be further studied and confirmed …”

Section: Introductionmentioning

confidence: 95%

Quantum‐dots‐precipitated rare‐earth‐doped glass for ultra‐broadband mid‐infrared emissions

et al. 2018

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Mid‐infrared (MIR) fiber lasers have wide application prospects and great commercial value in the fields of medical operation, remote sensing and military weapon, etc. At present, Tm3+‐doped glass can obtain broadband luminescence at 2 μm, the introduction of Ho3+ or Er3+ ions also shows a tunable MIR emission but with limited success. Herein, the rare‐earth (RE) doped glass with quantum dots (QDs) precipitation is proposed for achieving ultra‐broadband MIR emissions. The types and sizes of QDs are determined by the XRD and TEM, and their optical properties are further characterized by the absorption and emission spectra as well as the lifetime decay curves. It is found that the diameter of the QDs is gradually increased from 1.7 to 5.1 nm by increasing the heat‐treated temperature from 490°C to 530°C, respectively. Interestingly, an ultra‐broadband emission covering 1400‐2600 nm is achieved from the heat‐treated glass upon the excitation of 808 nm laser diode as a result of an overlapped emission from Tm3+ and PbS. All results suggest that these QDs‐precipitated RE‐doped glasses have important application prospects in ultra‐broadband MIR laser glass, glass fiber, and fiber lasers.

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“…The decrease of Er 3+ fluorescence lifetime with the introduction of Ag NPs can be understood by considering the interactions between Er 3+ ions and Ag NPs, which can be qualitatively explained by the expression[53]:…”

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confidence: 99%

Enhanced 1.53μm band fluorescence in Er3+/Ce3+ codoped tellurite glasses containing Ag NPs

Huang

Yang

et al. 2015

Optical Materials

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Effect of Ag nanoparticles on the radiative properties of tellurite glasses doped with Er3+, Yb3+ and Tm3+ ions

Cited by 22 publications

References 20 publications

Thermal and structural analysis of germanate glass and thin films co-doped with silver nanoparticles and rare earth ions with insights from visible and Raman spectroscopy

Thermal and structural analysis of germanate glass and thin films co-doped with silver nanoparticles and rare earth ions with insights from visible and Raman spectroscopy

Quantum‐dots‐precipitated rare‐earth‐doped glass for ultra‐broadband mid‐infrared emissions

Enhanced 1.53μm band fluorescence in Er3+/Ce3+ codoped tellurite glasses containing Ag NPs

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