The enhancement of luminescence in Co-doped cubic Eu2O3 using Li+ and Al3+ ions

Chae, Ki‐Woong; Park, Ta-Ryeong; Cheon, Chae Il; Cho, Nam In; Kim, Jeong Seog

doi:10.1016/j.jlumin.2011.06.017

Cited by 35 publications

(13 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4a, the strong characteristic peak at $339 cm À1 corresponds to the symmetric Ag and degenerated Fg modes, which are connected to the stretching vibrations of the C 2 -octahedron (Eu2-O) [37][38][39]. The peaks above 280 cm À1 and those below 200 cm À1 can be assigned to the stretching vibration modes of the Eu-O bonds and the bending vibration modes, respectively [37]. No other peaks were observed in the Raman spectra, which suggest that the obtained products are highly pure.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Porous Europium Oxide Particles for Photoelectrochemical Water Splitting

Zeng

Zheng

Lou

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Synthesis of Porous Europium Oxide Particles for Photoelectrochemical Water Splitting

Zeng

Zheng

Lou

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

“…Various physical and chemical processes are reported for the synthesis Eu2O3 NPs like sol gel, precipitation, ball milling, hydrothermal, thermal decomposition, pyrolysis, and hydrolysis [9][10][11][12][13][14][15][16]. Despite of being effective, these chemical and physical methods have their own pros and cons.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

et al. 2020

View full text Add to dashboard Cite

This contribution reports on the optical properties of bio-synthesised Eu2O3 nanoparticles bio-engineered for the first time by a green and cost effective method using aqueous fruit extracts of Hyphaene thebaica as an effective chelating and capping agent. The morphology, structural and optical properties of the samples annealed at 500 o C were confirmed by using high resolution transmission electron microscope (HR-TEM), X-Ray diffraction analysis (XRD), UV-vis spectrocopy and PL spectrometer. The XRD results confirmed the characteristic body centered cubic (bcc) structure of Eu2O3 nanoparticles with an average size of 20 nm. HR-TEM revealed square type morphology with an average size of ~ 6 nm. Electron Dispersion Energy dispersive X-ray Spectroscopy (EDS) spectrum confirmed the elemental single phase nature of pure Eu2O3. Furthuremore, the FTIR spectroscopy revealed the intrinsic characteristic peaks of Eu-O bond stretching vibrations. UV-vis reflectance proved that Eu2O3 absorbs in a wide range of the solar spectru from VUV-UV region with bandgap of 5.1 eV. The luminescence properties of such cubic were characterized by an intense red emission centered at 614 nm. It was observed that the biosynthesized Eu2O3 nanoparticles exhibit an efficient red-luminescence & hence a potential material as red phosphor.

show abstract

“…The high resolution XPS spectra of Eu 3d and Er 4d were shown in Figure 1e, it was clearly observed that the binding energies of Eu 3d (1125 eV) and Er 4d (182 eV) signals were consistent with the signals of Eu 2+ 3d 5/2 and Er 3+ 4d 5/2 , which proved that Eu and Er coexist in the LGO host in the form of divalent and trivalent states, respectively. [ 39–41 ]…”

Section: Resultsmentioning

confidence: 99%

An Advanced Tunable Multimodal Luminescent La₄GeO₈: Eu²⁺, Er³⁺ Phosphor for Multicolor Anticounterfeiting

Pei

Wei

Wang

et al. 2021

Adv Funct Materials

View full text Add to dashboard Cite

The development of advanced luminescent materials is of great importance to the anticounterfeiting application and still confronts with lots of challenges. At present, most anticounterfeiting luminescent materials are based on a monotonous photoluminescence model, which is easily faked by substitutes. Therefore, in this work, a multimodal La4GeO8: Eu2+, Er3+ material is reported, which can emit red, purple, baby blue, and green light under the increased excitation wavelength from 250 to 380 nm. Meanwhile, the phosphor also shows green upconversion luminescence under the NIR (980 and 808 nm) laser irradiation. Moreover, the phosphor features excellent stability and humidity resistance against harsh conditions. Based on the integrated feature, a functional anticounterfeiting application is designed. Results demonstrate that the multimodal luminescent feature can be easily detected by using a portable ultraviolet lamp or NIR (808 or 980 nm) laser. The unique characteristic will be complicated to counterfeit and show high‐level security in the field of advanced anticounterfeiting.

show abstract

The enhancement of luminescence in Co-doped cubic Eu2O3 using Li+ and Al3+ ions

Cited by 35 publications

References 22 publications

Synthesis of Porous Europium Oxide Particles for Photoelectrochemical Water Splitting

Synthesis of Porous Europium Oxide Particles for Photoelectrochemical Water Splitting

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

An Advanced Tunable Multimodal Luminescent La₄GeO₈: Eu²⁺, Er³⁺ Phosphor for Multicolor Anticounterfeiting

Contact Info

Product

Resources

About

The enhancement of luminescence in Co-doped cubic Eu2O3 using Li+ and Al3+ ions

Cited by 35 publications

References 22 publications

Synthesis of Porous Europium Oxide Particles for Photoelectrochemical Water Splitting

Synthesis of Porous Europium Oxide Particles for Photoelectrochemical Water Splitting

Optical properties of biosynthesized nanoscaled Eu2O3 for red luminescence applications

An Advanced Tunable Multimodal Luminescent La4GeO8: Eu2+, Er3+ Phosphor for Multicolor Anticounterfeiting

Contact Info

Product

Resources

About

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

An Advanced Tunable Multimodal Luminescent La₄GeO₈: Eu²⁺, Er³⁺ Phosphor for Multicolor Anticounterfeiting