Photoluminescent Cu(i) vs. Ag(i) complexes: slowing down emission in Cu(i) complexes by pentacoordinate low-lying excited states

2019 ◽  
Vol 48 (26) ◽  
pp. 9765-9775 ◽  
Author(s):  
José M. Carbonell-Vilar ◽  
Elisa Fresta ◽  
Donatella Armentano ◽  
Rubén D. Costa ◽  
Marta Viciano-Chumillas ◽  
...  
Keyword(s):  
Solid State ◽  
Excited States ◽  
Photoluminescence Properties ◽  
Slowing Down

Replacement of copper(i) ions by silver(i) improves the solid-state photoluminescence properties.

scholarly journals A red emitting of manganese-doped boron carbon oxynitride (BCNO) phosphor materials: facile approach and photoluminescence properties

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 4161-4166 ◽  
Author(s):  
Bebeh W. Nuryadin ◽  
Fitri A. Permatasari ◽  
Ade Y. Nuryantini ◽  
Irfana D. Faryuni ◽  
Mikrajuddin Abdullah ◽  
...  
Keyword(s):  
Solid State ◽  
Photoluminescence Properties ◽  
Solid State Method ◽  
Red Emission ◽  
State Method ◽  
Boron Carbon

A bright red emission of manganese-doped BCNO (BCNO:Mn) phosphor was firstly synthesized by solid state method.

A ligand field theory-based methodology for the characterization of the Eu 2+ [Xe]4f 6 5d 1 excited states in solid state compounds

2015 ◽  
Vol 622 ◽  
pp. 120-123 ◽  
Author(s):  
Amador García-Fuente ◽  
Fanica Cimpoesu ◽  
Harry Ramanantoanina ◽  
Benjamin Herden ◽  
Claude Daul ◽  
...  
Keyword(s):  
Field Theory ◽  
Solid State ◽  
Excited States ◽  
Ligand Field ◽  
Ligand Field Theory ◽  
The Eu

Investigation of the structural and photoluminescence properties of Eu3+ doped Na6CaP2O9 phosphors for solid state lighting

2021 ◽  
Vol 139 ◽  
pp. 111259 ◽  
Author(s):  
T Krishnapriya ◽  
Adon Jose ◽  
Twinkle Anna Jose ◽  
A.C. Saritha ◽  
Cyriac Joseph ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Lighting ◽  
Photoluminescence Properties

scholarly journals Indenopyrans – synthesis and photoluminescence properties

2016 ◽  
Vol 12 ◽  
pp. 825-834 ◽  
Author(s):  
Andreea Petronela Diac ◽  
Ana-Maria Ţepeş ◽  
Albert Soran ◽  
Ion Grosu ◽  
Anamaria Terec ◽  
...  
Keyword(s):  
Solid State ◽  
Emission Band ◽  
Fluorescence Spectra ◽  
Photophysical Properties ◽  
Quantum Yields ◽  
Band Broadening ◽  
Photoluminescence Properties ◽  
Fluorescence Quantum Yields ◽  
Blue Emitters ◽  
Solid State Fluorescence

New indeno[1,2-c]pyran-3-ones bearing different substituents at the pyran moiety were synthesized and their photophysical properties were investigated. In solution all compounds were found to be blue emitters and the trans isomers exhibited significantly higher fluorescence quantum yields (relative to 9,10-diphenylanthracene) as compared to the corresponding cis isomers. The solid-state fluorescence spectra revealed an important red shift of λmax due to intermolecular interactions in the lattice, along with an emission-band broadening, as compared to the solution fluorescence spectra.

scholarly journals Structure and photoluminescence properties of novel Sr6Ca4(PO4)6F2:Re (Re = Eu2+, Mn2+) phosphors with energy transfer for white-emitting LEDs

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 41282-41288 ◽  
Author(s):  
Hongwei Xu ◽  
Lili Wang ◽  
Dan Qu ◽  
Zhiyun Si ◽  
Jinsheng Shi
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
White Light ◽  
Solid State Reaction ◽  
Photoluminescence Properties ◽  
Light Emitting

A series of Sr6Ca4(PO4)6F2:Eu2+,Mn2+ phosphors were synthesized by traditional solid state reaction. Through controlling the ratio of Eu2+ and Mn2+, emission colors can be tuned from blue to yellow, including white-light-emitting.

scholarly journals Luminescence of Eu3+ in Some Scandium Phosphates

2021 ◽  
pp. 638-640
Author(s):  
Rajani A. Bhoyar ◽  
A. C. Nayak
Keyword(s):  
Solid State ◽  
Energy Levels ◽  
Concentration Quenching ◽  
Lanthanide Ions ◽  
Photoluminescence Properties ◽  
Trivalent Metal ◽  
Suitable Host ◽  
Relative Ease ◽  
Luminescence Efficiency ◽  
Light Lanthanides

Lanthanide ions are very efficient activators. Due to the presence of shielded 4f shell, the energy levels can be predicted with relative ease. Interaction with the surrounding lattice is minimum and luminescence efficiency is high. For this reason, many important phosphors having various applications have been discovered which use lanthanide activators. For obtaining efficient phosphors, it is important to find a suitable host for lanthanide activators which can accommodate these ions without concentration quenching. The hosts must be transparent to the emitted light. Lanthanides, most commonly occur as trivalent. Thus, hosts constituted by trivalent metals can be suitable. Yttrium compounds have been extensively studied as hosts. Scandium is another trivalent metal. Compared to the yttrium compounds, Scandium compounds have been very scarcely studied as hosts. We are investigating Scandium compounds as luminescence hosts. Synthesis and photoluminescence properties of Sr9 Sc (PO4)7 : Eu3+ and Sr8MgSc(PO4)7:Eu3+ phosphor are described in this work. The phosphors were prepared by solid state reaction. Usually, these phosphors are reduced and results on Eu2+ photoluminescence are reported. However, we have recorded photoluminescence before reduction and thus new results on Eu3+ emission could be obtained.

Solid state reaction synthesis and photoluminescence properties of Dy3+ doped Ca3Sc2Si3O12 phosphor

2015 ◽  
Vol 71 ◽  
pp. 21-24 ◽  
Author(s):  
Qiang Long ◽  
Chuang Wang ◽  
Yanyan Li ◽  
Jianyan Ding ◽  
Xicheng Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Reaction Synthesis ◽  
Photoluminescence Properties

Enhanced Photoluminescence of YInGe2O7:Eu3+,Li+ Phosphor Prepared Using the Solid-State Method

2013 ◽  
Vol 684 ◽  
pp. 274-278
Author(s):  
Huang Yu Chen ◽  
Ru Yuan Yang ◽  
Shoou Jinn Chang
Keyword(s):  
Solid State ◽  
Red Light ◽  
Broad Band ◽  
Lithium Carbonate ◽  
Ion Concentration ◽  
Photoluminescence Intensity ◽  
Photoluminescence Properties ◽  
Solid State Method ◽  
Enhanced Photoluminescence ◽  
Transfer State

A Eu3+ activated YInGe2O7phosphor was synthesized by solid-state reaction and lithium carbonate was added to change the morphology and photoluminescence properties. Scanning electron microscopy showed large particle size and necking shape were obtained as the concentrations of Li+ ions increase. In the PL studies, the excitation spectrum of YInGe2O7:Eu3+ phosphors exhibited a broad band in the UV region centered at about 272 nm attributed to charge transfer state (CTS) band, which has a little shift after Li+ ion was added. As the Li+ ion concentration increased, the photoluminescence intensity of the red emission at 620 nm of Eu3+ ions was enhanced, and the optimized concentration of of added Li+ ion is 0.05. The results showed that addition of Li+ ion allows YInGe2O7:Eu3+ phosphors emitting relatively pure red light.

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