Silver nanoparticles enhanced luminescence of Er3+ ions in boro-tellurite glasses

Mahraz, Zahra Ashur Said; Sahar, Md. Rahim; Ghoshal, Sib Krishna; Dousti, M. Reza; Amjad, Raja J.

doi:10.1016/j.matlet.2013.08.131

Cited by 56 publications

(5 citation statements)

References 15 publications

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“…A strong local electric field around Er 3+ ions increases their transition probability from the 4 I 13/2 level to 4 I 15/2 level [50,51]. The decrease in the emission and in the lifetime of the glass with x = 6 (Ag6) after heat treatment is probably due to a reverse energy transfer from Er 3+ ions to formed Ag species as suggested by [52]. After polishing, the intensity of the emission and the lifetime are back to the level of the emission from the glasses prior to heat treatment confirming that the newly formed Ag species are only at the surface.…”

Section: Resultsmentioning

confidence: 99%

Impact of Ag2O Content on the Optical and Spectroscopic Properties of Fluoro-Phosphate Glasses

et al. 2019

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Glasses with the system (84.60-x) NaPO3-5 ZnO-(9.40-x) NaF-x Ag2O-1 Er2O3, (x = 0, 2, 4, and 6) (mol%) were synthesized by the conventional melt-quenching method. The impact of the addition of Ag2O on the physical, thermal, structural, and optical properties of the glasses is discussed. The Judd-Oflet analysis was used to evaluate the radiative properties of the emission transitions of the glasses. The enhancement of luminescence properties due to Ag2O is discussed in terms of consequent changes in the local electromagnetic field, symmetry, and the ligand field around the Er3+ ion. The heat treatment of the glass was performed in order to precipitate Ag nanoparticles (NPs), which form as a layer at the surface of the heat-treated glasses as confirmed using scanning electron microscopy (SEM). The Ag NPs were found to increase the intensity of the emission at 1.5 µm.

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Section: Resultsmentioning

confidence: 99%

Impact of Ag2O Content on the Optical and Spectroscopic Properties of Fluoro-Phosphate Glasses

et al. 2019

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“…In particular, it is known that higher refractive index of matrix shifts the SPR band towards longer wavelength. 7 In addition, Table I shows that the refractive index increases with the annealing time. Thus, the increase of refractive index seems to be the main reason for this red shift of the SPR band.…”

Section: Resultsmentioning

confidence: 99%

“…The strong absorption cross-section related to the surface plasmon excitation in noble-metal nanoparticles and/or the large local field enhancement that is generated around the excited nanoparticle make it possible to use such metal nanoparticles for the enhancement of the luminescence intensity emitted by rareearth ions when present in close vicinity of plasmonics nanoparticles. 2,6,7 Trivalent erbium ion (Er 3þ ), as one of the most important active ions in the rare-earth family due to its favorable energy level structure, has been exploited in a wide variety of glasses for applications in solid-state lasers and optical amplifiers. Moreover, they have attracted much interest in optoelectronic and photonic applications because the emission in the telecommunication optical window is due to the 4f $ 4f transitions, not only the 4 I 13/2 !…”

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confidence: 99%

Silver nanoparticles enhanced luminescence properties of Er3+ doped tellurite glasses: Effect of heat treatment

Fares¹,

Elhouichet

Gelloz

et al. 2014

Journal of Applied Physics

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Articles you may be interested inEnergy transfer characteristics of silicate glass doped with Er3+, Tm3+, and Ho3+ for 2μm emission Tellurite glasses doped Er 3þ ions and containing Silver nanoparticles (Ag NPs) are prepared using melt quenching technique. The nucleation and growth of Ag NPs were controlled by a thermal annealing process. The X-ray diffraction pattern shows no sharp peak indicating an amorphous nature of the glasses. The presence of Ag NPs is confirmed from transmission electron microscopy micrograph. Absorption spectra show typical surface plasmon resonance (SPR) band of Ag NPs within the 510-550 nm range in addition to the distinctive absorption peaks of Er 3þ ions. The Judd-Ofelt (J-O) intensity parameters, oscillator strengths, spontaneous transition probabilities, branching ratios, and radiative lifetimes were successfully calculated based on the experimental absorption spectrum and the J-O theory. It was found that the presence of silver NPs nucleated and grown during the heat annealing process improves both of the photoluminescence (PL) intensity and the PL lifetime relative to the 4 I 13/2 ! 4 I 15/2 transition. Optimum PL enhancement was obtained after 10 h of heat-treatment. Such enhancements are mainly attributed to the strong local electric field induced by SPR of silver NPs and also to energy transfer from the surface of silver NPs to Er 3þ ions, whereas the quenching is ascribed to the energy transfer from Er 3þ ions to silver NPs. Using the Mc Cumber method, absorption cross-section, calculated emission cross-section, and gain cross-section for the 4 I 13/2 ! 4 I 15/2 transition were determined and compared for the doped and co-doped glasses. The present results indicate that the glass heat-treated for 10 h has good prospect as a gain medium applied for 1.53 lm band broad and high-gain erbium-doped fiber amplifiers. V C 2014 AIP Publishing LLC. [http://dx.

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“…[31][32][33][34] Because of the difference in relative permittivity of the silver NPs and the surrounding glass matrix, surface waves produced by SPR move along the boundary between metal and dielectric, which allows electromagnetic energy to be concentrated more compactly than the diffraction limit of light, which applied to conversional optics giving origin to large electric field termed as "hot spots" 31,35 localized to subwavelength distance scales. A resonantly enhanced dipolar field starts building up in the proximity of the particle when the electric field lines are packed at a sharp metallic tip ("Lightning Rod Effect").…”

Section: Resultsmentioning

confidence: 99%

Ag2O dependent up-conversion luminescence properties in Tm3+/Er3+/Yb3+ co-doped oxyfluorogermanate glasses

Qiu

Song

et al. 2014

Journal of Applied Physics

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Articles you may be interested inSilver nanoparticles enhanced luminescence properties of Er3+ doped tellurite glasses: Effect of heat treatment J. Appl. Phys. 116, 123504 (2014); 10.1063/1.4896363 2.05 µm emission properties and energy transfer mechanism of germanate glass doped with Ho3+, Tm3+, and Er3+Up-conversion (UC) luminescence properties of Ag/Tm 3þ /Er 3þ /Yb 3þ co-doped oxyfluorogermanate glasses have been studied to assess the effective role of silver nanoparticles as a sensitizer for Tm 3þ and Er 3þ ions. The X-ray diffraction patterns obtained in this work do not reveal any crystalline phase in the glass. However, the absorption spectra reveal that surface plasmons resonance band of Ag undergoes a distinct split with two maxima and a very broad absorption peak with a background that extends toward the near infrared (NIR) with the increasing of Ag 2 O added concentration. Transmission electron microscope images confirm that silver nanoparticles have been precipitated from matrix glasses and show their distribution, size, and shapes. In addition, changes in UC luminescence intensity of four emission bands 476, 524, 546, and 658 nm corresponding to 1 G 4 ! 3 H 6 (Tm 3þ ), ( 2 H 11/2 , 4 S 3/2 ) ! 4 I 15/2 (Er 3þ ), and 4 F 9/2 ! 4 I 15/2 (Er 3þ ) transitions, respectively, as a function of silver addition to the base composition have been measured under 980 nm excitation. It is confirmed that Ag 2 O added concentration plays an important role in increasing the UC luminescence intensity; however, further increase in Ag 2 O added concentration reduces the intensity. V C 2014 AIP Publishing LLC. [http://dx.

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Silver nanoparticles enhanced luminescence of Er3+ ions in boro-tellurite glasses

Cited by 56 publications

References 15 publications

Impact of Ag2O Content on the Optical and Spectroscopic Properties of Fluoro-Phosphate Glasses

Impact of Ag2O Content on the Optical and Spectroscopic Properties of Fluoro-Phosphate Glasses

Silver nanoparticles enhanced luminescence properties of Er3+ doped tellurite glasses: Effect of heat treatment

Ag2O dependent up-conversion luminescence properties in Tm3+/Er3+/Yb3+ co-doped oxyfluorogermanate glasses

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