White light emission from Dy3+ doped sodium–lead borophosphate glasses under UV light excitation

Kiran, N.; Kumar, Amit

doi:10.1016/j.molstruc.2013.09.023

Cited by 64 publications

(9 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…BP glasses containing divalent cations such as Ba 2+ , Sr 2+ , and Zn 2+ have been investigated with respect to their structure as well as thermal and physical properties 8–13 . Several studies report the potential of BP glasses as a host matrix for RE ions like Dy 3+ , Yb 3+ , and Sm 3+ 14–20 …”

Section: Introductionmentioning

confidence: 99%

Structure and fluorescence properties of Dy‐doped alkaline‐earth borophosphate glasses

Griebenow

Muñoz

Tagiara

et al. 2021

Int J of Appl Glass Sci

View full text Add to dashboard Cite

Dysprosium doped borophosphate glasses, containing the divalent cations Mg 2+ , Ca 2+ , Sr 2+ , Ba 2+ and Zn 2+ , are prepared by the melt-quenching technique. The structure of the glasses is investigated by Raman, infrared and Nuclear Magnetic Resonance spectroscopies and the fluorescence properties are determined. The Dy 3+ emission lifetime increases with an increasing ionic field strength and its maximum is observed in the Mg 2+ and Zn 2+ containing glasses. This result can be explained by the stronger M-O bonding which causes a rearrangement of the borophosphate network and creating a local Dy 3+ environment of comparably low symmetry. This is in agreement with the Raman spectra and the evolution of the molar volume. The effect of the B/P variation on the emission properties of Dy 3+ is investigated in a second series of glasses where the emission lifetime is found maximum at 10 mol% B 2 O 3 .

show abstract

Section: Introductionmentioning

confidence: 99%

Structure and fluorescence properties of Dy‐doped alkaline‐earth borophosphate glasses

Griebenow

Muñoz

Tagiara

et al. 2021

Int J of Appl Glass Sci

View full text Add to dashboard Cite

show abstract

“…The primary network forming units of borate glasses are 3-coordinated boron atoms, whereas that of phosphate glasses are 4-coordinated phosphorous atoms linked through covalent bonding with bridging oxygen atoms [7][8][9][10]. But, when the borate and phosphate matrices are mixed, a new linkage is formed between phosphate chains via P-O-B bonds [11,12]. Therefore, the properties of mixed borophosphate glass networks are different from individual borate and phosphate glass networks [13].…”

Section: Introductionmentioning

confidence: 99%

Compositional dependence of properties in calcium substituted sodium borophosphate glasses containing $${\hbox {VO}}^{2+}$$ VO 2 + ions

et al. 2019

View full text Add to dashboard Cite

Synthesis of calcium-substituted sodium borophosphate glasses with compositions xCaO − (30 − x)Na 2 O − 35B 2 O 3 − 35P 2 O 5 (x = 0, 2, 5, 7 and 10 mol%, abbreviated as CNVx) containing additional 1.0 mol% of V 2 O 5 following a melt-quench method has been carried out. Different analytical techniques viz. wide angle X-ray diffraction (to confirm noncrystalline nature), ultraviolet-visible spectroscopy (for optical band gap analysis), infrared absorption spectroscopy (for structural analysis) and differential thermal analysis (to evaluate characteristic temperatures) were employed to characterize the synthesized compositions. The optical band gap is calculated for both indirect allowed and indirect forbidden transitions. The values of the band gap decrease with increasing concentration of CaO (from 5 to 10 mol%) at the cost of Na 2 O. The cut-off wavelength and Urbach's energy are determined from the optical absorption spectra and were related to the structural changes occurring in these glasses with an increase in CaO content. The results obtained from Fourier-transform infrared studies confirm that V 2 O 5 and CaO play the role of network modifier oxides. Also, the significant shifting in IR bands with an increase in CaO content in the glass matrix suggests the formation of a new boron-oxygen ring. From differential scanning calorimetry measurements it is observed that substitution leads to the increase in natural bond orbitals, high degree cross-linking and thus strengthens the glass network. Glass transition temperature (T g ) is found to increase from 483 to 522 • C. Electrical and dielectric properties are analysed using dc conductivity and impedance spectroscopy. Using impedance spectroscopy, different dielectric parameters i.e. dielectric loss (ε ), electrical modulus (M * ) and ac conductivity (σ ac ) etc. are evaluated as a function of frequency, temperature and composition. The frequency dependence of impedance exhibits the non-Debye relaxation behaviour and the total conductivity obeys Jonscher's power law.

show abstract

“…Out of the 14 lanthanide elements, dysprosium in its trivalent state (Dy 3+ ) is an efficient emitter in the visible region and it is the only ion that emits two intense colors which on mixing in suitable proportions yields white light (5,(10)(11)(12) . Further, the 1.3 μm emission of Dy 3+ ion is useful for optical communication and up conversion emission in the blue region may be utilized for the development of blue lasers (5,11,(13)(14) .…”

Section: Introductionmentioning

confidence: 99%

Luminescence Properties of Dy3+-doped Lutetium-Calcium-Silico-Borate Glasses for White Light Emitting Applications

Kirdsiri

Kaewkhao

Kim

2016

The Proceedings of the 4th International Conference on Industrial Application Engineering 2016

View full text Add to dashboard Cite

Lutetium-calcium-silico-borate glasses doped with various concentrations of dysprosium ions (Dy 3+ ) have been fabricated. The amorphous nature of glasses has been confirmed by XRD technique. The luminescence properties have been studied throughout the emission spectra, the combination of blue and yellow emissions was shown for all the glasses and white light emission could be observed. The x, y coordinates of the prepared glasses pass through the white light region in the CIE 1931 diagram and are suitable for white light emitting devices.

show abstract

White light emission from Dy3+ doped sodium–lead borophosphate glasses under UV light excitation

Cited by 64 publications

References 44 publications

Structure and fluorescence properties of Dy‐doped alkaline‐earth borophosphate glasses

Structure and fluorescence properties of Dy‐doped alkaline‐earth borophosphate glasses

Compositional dependence of properties in calcium substituted sodium borophosphate glasses containing $${\hbox {VO}}^{2+}$$ VO 2 + ions

Luminescence Properties of Dy3+-doped Lutetium-Calcium-Silico-Borate Glasses for White Light Emitting Applications

Contact Info

Product

Resources

About