Enhanced photoluminescence and charge density studies of novel (Sm1−x Gdx)2O3 nanophosphors for WLED applications

Antoinette, Morris Marieli; Israel, S.; Berchmans, John L.; Manoj, Gupta

doi:10.1007/s10854-018-0066-1

Cited by 6 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diagram is useful for determining the dominant wavelength and excitation purity of the stimulation. 68 In addition, Zhongfei Mu et al successfully synthesized ZnB 2 O 4 : Eu 3+ phosphors by adopting a solid-state reaction procedure. These particular phosphors can significantly absorb 393 nm ultraviolet (UV) light and emit red light once excited.…”

Section: Colour Modifications In Wleds Upon the Inclusion Of Re Ionsmentioning

confidence: 99%

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

Farooq,

Rafiq,

Shah

et al. 2023

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

The manuscript focuses on the concept of nano-phosphors, a remarkable type of material that has been widely explored because of their diverse promising applications. Progress in the development of such nano-phosphors as luminescent materials has received significant research attention. The white-light-emitting diodes (WLEDs) have grown dramatically and represent the most intriguing lighting source of the twenty-first century. The contribution of rare-Earth (RE) ions to lighting technology is explicitly addressed. The additional physical characteristics of white light that are addressed in the present manuscript comprise the correlated color temperature (CCT), the color rendering index (CRI), and the Commission International de’ Eclairage (CIE) chromaticity coordinates. Multiple synthesis methods employed around the globe to produce such industrially important nano-phosphors along with more specialized and impactful techniques to characterize all such materials are thus thoroughly explored. Also, the various technologically significant applications of these materials are described. The evolution of these potentially suitable luminescent materials for WLEDs and their white-light characteristics is also outlined. The manuscript presents a comprehensive overview of the advancement and innovation of nano-phosphors, their application fields and the significant milestones of artificial lighting toward modernization.

show abstract

Section: Colour Modifications In Wleds Upon the Inclusion Of Re Ionsmentioning

confidence: 99%

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

Farooq,

Rafiq,

Shah

et al. 2023

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…They could serve as a viable alternative to the well-established YAG crystals. RE 3+ -doped sesquioxide materials show strong potential for a variety of applications, including solidstate light-emitting devices [9][10][11], high-efficiency luminescent materials [12,13], rare-earth magnets [14,15], magneto-optical recording materials [16,17], and so on.…”

Section: Introductionmentioning

confidence: 99%

Selective Laser Spectroscopy of the Bixbyite-Type Yttrium Scandate Doped by Rare-Earth Ions

Dobretsova,

Alimov,

Rusanov

et al. 2023

Materials

View full text Add to dashboard Cite

Yttrium scandate crystals doped by Nd3+ and Tm3+ ions have been successfully grown in the form of fibers using the laser-heated pedestal growth (LHPG) technique. The selective laser spectroscopy methods have identified and distinguished three distinct types of optically active centers associated with Nd3+ and Tm3+ ions. The substitution of Y3+ and Sc3+ for rare-earth ions in the C2 structural site leads to the formation of two distinct basic long-time centers. In Nd3+:YScO3, another type of center (a short-lifetime one) is formed known as the Nd3+–Nd3+ aggregate pair. This center arises from the substitution of Y3+ or Sc3+ for Nd3+ cation in the adjacent MO6 polyhedra that share an edge. In Tm3+:YScO3, the third optical center is formed as a result of the substitution of Y3+ or Sc3+ for Tm3+ in the MO6 octahedra with the C3i site symmetry. The fluorescence decay lifetimes of Nd3+ and Tm3+ ions in the YScO3 crystal structure have been accurately measured and estimated. A Stark level diagram illustrating the splitting of 4F3/2, 4I11/2, and 4I9/2 multiplets of Nd3+ ions has been constructed to show features of the active optical centers with the C2 site symmetry.

show abstract

“…These materials are predestined for high-power solid-state lasers [3][4][5][6][7][8] , in particular in infrared (IR) spectral region, and may be an alternative for the well-known YAG crystals. RE 3+ -doped sesquioxide materials show strong prospects for variety of applications as solid-state light-emitting devices [9][10][11] , highefficiency luminescent materials 12,13 , rare-earth magnets 14,15 , magneto-optical recording materials 16,17 , and so on. Y2O3 and Sc2O3 as well as the high-temperature polytype of YScO3 belong to the cubic bixbyite-type structure [18][19][20][21][22] where there are one position for the oxygen atom and two symmetrically independent positions for cations: 8b site (C3i symmetry) and 24d site (C2 symmetry).…”

Section: Introductionmentioning

confidence: 99%

Selective laser spectroscopy of the bixbyite-type yttrium scandate doped by rare-earth ions

Dobretsova

Alimov

Rusanov

et al. 2022

Preprint

View full text Add to dashboard Cite

Yttrium scandate crystals doped by Nd3+ and Tm3+ ions have been obtained in the form of a fiber through the laser-heated pedestal growth (LHPG) method. Three types of optical centers of Nd3+ and Tm3+ have been recorded by the selective laser spectroscopy methods. Two dominant centers form due to substitution of the rare-earth ions for Y3+ and Sc3+ in the structural site of C2. In the case of Nd3+:YScO3, the third one is aggregate pair center Nd3+ - Nd3+ which forms due to substitution of basic ions (Y3+ or Sc3+) in neighboring MO6 polyhedra shared the edge. In the case of Tm3+:YScO3, the third optical center form due to substitution of Tm3+ for Y3+ or Sc3+ in the octahedra MO6 with symmetry site of C3i. The lifetime have been estimated for Nd3+ and Tm3+ ions occupied MO6 polyhedra with symmetry sites of C2 and C3i in the YScO3 crystal fibers. Stark level schematic of 2F3/2, 4I11/2, and 4I9/2 multiplets of Nd3+ ions have been built for both centers of C2 in the YScO3 crystal fiber

show abstract

Enhanced photoluminescence and charge density studies of novel (Sm1−x Gdx)2O3 nanophosphors for WLED applications

Cited by 6 publications

References 39 publications

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

Selective Laser Spectroscopy of the Bixbyite-Type Yttrium Scandate Doped by Rare-Earth Ions

Selective laser spectroscopy of the bixbyite-type yttrium scandate doped by rare-earth ions

Contact Info

Product

Resources

About