Synthesis and characterization of Er3+/Cu+-codoped fluorophosphate glasses

Abdedou, N.; Djouama, Torkia; Chalal, Mohand; Poulain, Marcel; Capoen, Bruno; Mahiou, Rachid

doi:10.1016/j.jallcom.2019.03.129

Cited by 14 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These changes revealed strong covalency with the presence of low symmetry around erbium ions. These values were found to equate to a higher oscillator strength than those of phosphate glass [28], boroaluminosilicate glass [10] and tellurite glass [18,29]. In addition, the values of rms were in the range of 1-2 × 10.…”

Section: Judd-ofelt Analysismentioning

confidence: 80%

Effects of Vanadium on the Structural and Optical Properties of Borate Glasses Containing Er3+ and Silver Nanoparticles

Zaini

Mohamed

2021

Materials

View full text Add to dashboard Cite

The erbium-vanadium co-doped borate glasses, embedded with silver nanoparticles (Ag NPs), were prepared to improve their optical properties for potential optical fiber and glass laser application. The borate glasses with composition (59.5–x) B2O3–20Na2O–20CaO–xV2O5–Er2O3–0.5AgCl (x = 0–2.5 mol%) were successfully prepared by conventional melt-quenching method. The structural properties of glass samples were investigated by XRD, TEM and by Fourier transform infrared (FTIR) spectroscopy while optical properties were carried out by UV–Vis spectroscopy by measuring optical absorption and the emission properties were investigated by photoluminescence spectroscopy. The XRD patterns confirmed the amorphous nature of the prepared glass samples whilst the FTIR confirmed the presence of VO4, VO5, BO3 and BO4 vibrations. UV–Vis–NIR absorption spectra reveal eight bands which were located at 450, 490, 519, 540, 660, 780, 980, and 1550 nm corresponding to transition of 4F5/2, 4F7/2, 2H11/2, 4S3/2, 4F9/2, 4I9/2, 4I11/2, and 4I13/2, respectively. The optical band gap (Eopt), Urbach energy and refractive index were observed to decrease, increase and increase, respectively, to the addition of vanadium. Under 800 nm excitation, three emission bands were observed at 516, 580 and 673 nm, which are represented by 2H11/2–4I15/2, 4S3/2–4I15/2 and 4F15/2–4I15/2, respectively. The excellent features of achieved results suggest that our findings may provide useful information toward the development of functional glasses.

show abstract

Section: Judd-ofelt Analysismentioning

confidence: 80%

Effects of Vanadium on the Structural and Optical Properties of Borate Glasses Containing Er3+ and Silver Nanoparticles

Zaini

Mohamed

2021

Materials

View full text Add to dashboard Cite

show abstract

“…Inter atomic distance The average boron-boron separation which identifies the effect of dopant concentration in the glass matrix is calculated by [22]:…”

Section: Density and Ion Concentration Dependent Physical Parametersmentioning

confidence: 99%

Optical Applications of Europium Ion Doped Silicate Glasses: W-LED

Ravi Teja,

Sreenivasulu,

Chavan

2024

Silicon

View full text Add to dashboard Cite

Europium ion doped silicate glasses are prepared by melt quench method with a novel composition for white Light Emitting Diode (LED). The investigating sample is havig high density and refractive index which is useful for optical applications. The hryby criteria value of these glass material is high and having high thermal stability. These glasses are assigned to Si-O-Eu and Si-O-Si stretch and bending bonds are forms with respect to their frequencies. High intensity absorption peaks are observed at 377 and 609 nm, The direct and indirect energy band gap values are decreasing as the europium ion concentration increases. The Judd -Oflelt parameters are calculated by using emission spectra of prepared glass sample. Ω2, Ω4 and Ω6 are the intensity parameters of Europium ion-doped Silicate glasses. Since the parameter Ω2 directly relates to the asymmetry of the local environment around the trivalent rare earth ions (Eu 3+), it indicates the covalent nature between Europium ions and legand anaions. . The CIE plot shows that the prepared 5 glass sample SiEu 1 to SiEu 5 emits white light at an excitation wavelength of 377 nm; these glare are utilised for white LEDs. europium-doped silicate glasses play a crucial role in LED technology by enhancing the color quality, efficiency, and versatility of LED lighting for a wide range of applications, from general lighting to displays and more. Their ability to convert high-energy light into visible light with specific colors makes them valuable components in the world of LED technology.

show abstract