Blue-yellow emission adjustability with aluminium incorporation for cool to warm white light generation in dysprosium doped borate glasses

Kaur, Simranpreet; Arora, Deepawali; Kumar, Sunil; Singh, Gurinderpal; Mohan, S.; Kaur, Puneet; Kriti,; Singh, Davinder

doi:10.1016/j.jlumin.2018.05.034

Cited by 39 publications

(4 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorption band at 304 nm in compound 3 is attributed to f→f transitions in the Gd(III) ion from the 8 S 7/2 level to the 6 P 7/2 , 6 P 5/2, 6 I 7/2 , 6 I 9/2 6 I 17/2 , 6 I 11/2 , 6 I 13/2 , 6 I 15/2 , 6 D 9/2 levels, indicating the presence of eight coordinated Gd(III) ions in the DMSO solution ( Figure 6 C) [ 36 ]. In the spectrum of the Dy(III) complex 4 , the appearance of bands at 350, 365, 387, 450, 758, and 808 nm was observed in the visible region ( Figure 6 E), which correspond to transitions between the ground state 6 H 5/2 and multiple excited states belonging to the configuration 4f 9 of the ion Dy(III) from 6 H 15/2 to 6 P 7/2 , 4 P 5/2 , 4 I 13/2 , 4 I 15/2 , 6 F 3/2 and 6 F 5/2 , respectively [ 37 , 38 , 39 , 40 , 41 , 42 ]. It was found that complex 4 with Dy(III) ions has a coordination node in the form of a square antiprism [ 43 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

Hyperbranched Polyester Polyfumaratomaleate Doped with Gd(III) and Dy(III) Ions: Synthesis, Structure and Properties

et al. 2022

View full text Add to dashboard Cite

For the first time, metal–polymer complexes have been synthesized using hyperbranched polyester polyfumaratomaleate as a matrix, the structure of which has been established by 1H NMR, IR, electron spectroscopy, and elemental analysis methods. The formation of complexes with Gd(III) and Dy(III) ions involving fumarate and maleate groups of the polyester was proved by IR and electron spectroscopy methods. It was established that the structure of the coordination units has the form of a square antiprism. The compositions and conditional logarithms of the stability constants of the complexes were determined. It was established that complexation with lanthanide ions promotes emission enhancement in the ligand.

show abstract

Section: Resultsmentioning

confidence: 99%

Hyperbranched Polyester Polyfumaratomaleate Doped with Gd(III) and Dy(III) Ions: Synthesis, Structure and Properties

et al. 2022

View full text Add to dashboard Cite

show abstract

“…It is known that 4 F 9/2 → 6 H 13/2 is a hypersensitive transition that depends mainly on the host matrix; on the other hand, 4 F 9/2 → 6 H 15/2 results from the strength of the crystal field in the matrix. The dominant appearance of the 6 H 13/2 transition ensures the symmetric distribution of Dy 3+ in the glass matrix environment [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Rare-Earth Ions on the Optical and PL Properties of Novel Borosilicate Glass Developed from Agricultural Waste

et al. 2021

View full text Add to dashboard Cite

There is considerable attention devoted to the use of agricultural waste as a raw material substitute for commercial silica in the development of borosilicate glasses doped with rare earth oxides. Here, we present a novel structure for borosilicate glasses made from rice husk ash with a 25% molar ratio of extracted SiO2 and doped with neodymium (GRN) or dysprosium (GRD). Adding rare earth oxides to borosilicate glasses by the melt quenching method enhanced optical transmission due to the presence of their tetrahedral geometries. GRN samples showed few bands near zero, which constitutes good utility for band rejection filters in image devices, and the samples exhibited energy values ranging from 3.03 to 3.00 eV before and after gamma irradiation. Optical transmissions of GRD samples showed peaks at 25,974, 22,172, 13,333, 11,273, 9302, 7987, and 6042 cm−1. Deterioration in transmittance was observed when the investigated samples were exposed to irradiation doses of 20 and 50 kGy in the wavenumber range of 12,500 to 50,000 cm−1; however, different behaviors after irradiation with 50 kGy caused an increase in transparency in comparison to 20 kGy irradiation, which was pronounced for higher wavenumbers (greater than 12,500 cm−1). Photoluminescence emission and excitation spectra of the glass-doped Nd3+ (GRN) and glass-doped Dy3+ (GRD) samples were determined. GRD exhibited emission in the blue and yellow regions of the visible spectrum, which gave a white flash of light. Chromaticity coordinate (CIE) measurements of GRD samples indicated the origin of its luminous color relative to the standard white light region.

show abstract

“…The color purity of standard white light is represented by 0. This means that samples with the lowest color purity, almost zero if possible, emit pure white light [62,86].…”

Section: Dy 3+ Singly-doped Glassesmentioning

confidence: 99%

Recent progress in lanthanide-doped luminescent glasses for solid-state lighting applications—a review

Erol

Vahedigharehchopogh

Kıbrıslı

et al. 2021

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Nowadays, solid-state white light-emitting diodes (wLEDs) have attracted remarkable attention for applications in general lighting, displays and numerous electronical devices due to their eminent efficiency, longer lifetime and higher mechanical durability compared to traditional incandescent and fluorescent lights. In current commercial wLEDs, a combination of Y 3 Al 5 O 12 :Ce 3+ yellow phosphor with blue LED chip and epoxy resin is generally used to generate white light. However, there are some considerable frailties mostly originated from phosphor and resin such as, degradation upon heat, and moisture, inhomogeneous spectral distribution, and poor color rendering capability. Therefore, phosphor embedded glass-ceramics have been developed as a promising way to obtain durable solid-state lighting devices. However, in these methods, there is a greater risk of reactions between the phosphor material and the glass host. At this point, lanthanide-doped luminescent glasses have drawn great attention as a new generation phosphor and/or epoxy free white-light-emitting source owing to their favorable properties including high thermal and chemical stability, high transparency, and easy manufacturing process. This review article aims to comprehensively summarize the recent progress in singly (i.e., Dy 3+ , Eu 2+ ), doubly (i.e.

show abstract

Blue-yellow emission adjustability with aluminium incorporation for cool to warm white light generation in dysprosium doped borate glasses

Cited by 39 publications

References 53 publications

Hyperbranched Polyester Polyfumaratomaleate Doped with Gd(III) and Dy(III) Ions: Synthesis, Structure and Properties

Hyperbranched Polyester Polyfumaratomaleate Doped with Gd(III) and Dy(III) Ions: Synthesis, Structure and Properties

Effect of Rare-Earth Ions on the Optical and PL Properties of Novel Borosilicate Glass Developed from Agricultural Waste

Recent progress in lanthanide-doped luminescent glasses for solid-state lighting applications—a review

Contact Info

Product

Resources

About