Rare-earth free narrow-band green-emitting KAlSi2O6:Mn2+ phosphor excited by blue light for LED-phosphor material

RSC Advances ◽  
2015 ◽  
Vol 5 (38) ◽  
pp. 30001-30004 ◽  
Author(s):  
Xin Ding ◽  
Ge Zhu ◽  
Qian Wang ◽  
Yuhua Wang
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Blue Light ◽  
Solid State Reaction ◽  
Narrow Band ◽  
Phosphor Material

A novel rare-earth free narrow-band green-emitting KAlSi2O6:Mn2+ phosphor excited by blue light for LED is synthesized by solid-state reaction.

Effects of induced optical tunable and ferromagnetic behaviors of Ba doped nanocrystalline LaB6

2016 ◽  
Vol 18 (28) ◽  
pp. 19165-19172 ◽  
Author(s):  
Lihong Bao ◽  
Xiaoping Qi ◽  
Tana Tana ◽  
Lumen Chao ◽  
O. Tegus
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Solid State Reaction ◽  
Single Step

Multiple nanocrystalline rare-earth hexaborides La1−xBaxB6 have been synthesized via a single step solid-state reaction.

Novel bismuth activated blue-emitting phosphor Ba2Y5B5O17:Bi3+ with strong NUV excitation for WLEDs

2019 ◽  
Vol 7 (36) ◽  
pp. 11227-11233 ◽  
Author(s):  
Xiu Wang ◽  
Jia Wang ◽  
Xingyu Li ◽  
Haoyang Luo ◽  
Mingying Peng
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Solid State ◽  
White Light ◽  
Solid State Reaction ◽  
Rare Earth Ion ◽  
Reaction Route ◽  
Light Emitting ◽  
Solid State Reaction Route ◽  
White Light Emitting Diodes

In this work, a series of novel non-rare-earth ion activated phosphors Ba2Y5−xB5O17:xBi3+ for white light-emitting diodes (WLEDs) was prepared via the high temperature solid state reaction route.

Photoluminescence properties of Pr3+, Sm3+ and Tb3+ doped SrAlSi4N7 and energy level locations of rare-earth ions in SrAlSi4N7

2014 ◽  
Vol 2 (37) ◽  
pp. 7952-7959 ◽  
Author(s):  
Zhi-Jun Zhang ◽  
Otmar M. ten Kate ◽  
Anneke Delsing ◽  
Pieter Dorenbos ◽  
Jing-Tai Zhao ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Solid State ◽  
Energy Level ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Rare Earth Ions ◽  
Photoluminescence Properties ◽  
Reaction Method

RE3+ (RE = Pr, Sm, and Tb)-doped SrAlSi4N7 samples were synthesized by a solid-state reaction method at high temperature, and their photoluminescence properties were investigated.

scholarly journals Photoluminescence properties of rare earth (Nd, Yb, Sm, Pr)-doped CeO2pellets prepared by solid-state reaction

2015 ◽  
Vol 3 (27) ◽  
pp. 7014-7021 ◽  
Author(s):  
Matteo Balestrieri ◽  
Silviu Colis ◽  
Mathieu Gallart ◽  
Guy Schmerber ◽  
Marc Ziegler ◽  
...  
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Rare Earths ◽  
Solid State Reaction ◽  
Photoluminescence Properties

The luminescence of rare earths in CeO2is sensitized by intrinsic Ce3+ions.

The Investigations on Luminescence Characteristics and Influence of Doping and Co-Doping Different Rare Earth Ions in White Phosphorescence Materials Having Different Luminescent Centers

2014 ◽  
Vol 90 ◽  
pp. 133-140
Author(s):  
Erkul Karacaoglu ◽  
Bekir Karasu ◽  
Esra Öztürk
Keyword(s):  
Particle Size ◽  
Rare Earth ◽  
Solid State ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Rare Earths ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Luminescence Characteristics

The Akermanite type alkaline earth silicate Ca2MgSi2O7 activated by different types of rare earths was prepared by the conventional solid state reaction method under weak reductive atmosphere. The phase formation, particle size distribution, particle morphologies and photoluminescence properties of the samples have been investigated respectively. The comparative results of SEM and laser particle size analysis revealed that the relatively regular morphology, smaller particle size distribution could be achieved for the phosphors synthesized by the solid state reaction method including dry-ground after which powders were sieved below 170 meshes. The effects of rare earth oxides; Nd2O3, Pr6O11, Ce2O3 and Sm2O3 on the luminescence properties of the host material, Ca2MgSi2O7, were studied. Remarkable enhancement and novel color emitting including white in luminescence characteristics of host material were observed as a result of doping the mentioned rare-earths were doped.

scholarly journals Photoluminescence Studies of CaAl2O4: EU2+ Blue Phosphors Co-Doped with ND3+ Ion Synthesized by Solid- State Reaction Method

2021 ◽  
Vol 16 (2) ◽  
Author(s):  
Sukhdev Bairagi ◽  
Ghizal F. Ansari ◽  
K.S. Bartwal
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Earth Metal ◽  
Luminescent Properties ◽  
Solid State Reaction Method ◽  
High Quantum Efficiency ◽  
Phosphor Material ◽  
Reaction Method ◽  
X Ray ◽  
Co Doped

In this work, the polycrystalline CaAl2O4: Eu2+, Nd3+ based blue phosphor was prepared by solid-state reaction method. The rare earth metal ions doped calcium aluminate phosphors have been studied in depth. The high quantum efficiency make them useful for anomalous long phosphorescence, good stability, luminous paints, radiation dosimetry, X-ray imaging, color display, and light emitting diodes. Phase, crystallinity and luminescent properties of the synthesized phosphors were examined by using powder X-ray diffraction (XRD). In the phosphor material, the photoluminescence (PL) spectrum has a broad emission peak of Eu2+ ion in blue region at (λmax = 440 nm) due to the energy transitions between the ground state 4f7 and the excited state 4f65d1 of the Eu2+ ion. This has importance in making the visible phosphor devices from this material. In this study the single dopant phosphors were synthesized; therefore, it is important to improve the long afterglow of the phosphors by codoping. The phosphors of CaAl2O4: Eu2+, Nd3+ had long persistence luminescence. In these phosphors, Eu2+ ions play the role of activators. Whereas Nd3+ ions generate deep traps that lead to the long persistent phosphorescence and act as the co-activators in the phosphors simultaneously. The concentration of Nd3+ ion co-doped has strong influence on the luminescence of phosphor.

Thermoelectric Properties of the cubic AgPb10SbTe12

2003 ◽  
Vol 793 ◽  
Author(s):  
Kuei-Fang Hsu ◽  
Sim Loo ◽  
Wei Chen ◽  
Ctirad Uher ◽  
Tim Hogan ◽  
...  
Keyword(s):  
Solid State ◽  
Band Gap ◽  
Carrier Concentration ◽  
Thermoelectric Properties ◽  
Power Factor ◽  
Solid State Reaction ◽  
Narrow Band ◽  
Thermoelectric Measurements

ABSTRACTAgPb10SbTe12 is one member of the cubic family of materials AgPbmSbTem+2, which adopts NaCl structure where Ag, Pb and Sb atoms occupy the Na site and Te atoms occupy the Cl site. Ingots of this compound were prepared by a solid state reaction for thermoelectric measurements. AgPb10SbTe12 is a narrow band gap semiconductor with Eg∼0.26 eV. In order to optimize the ZT of this member, compositions with deficiency of Ag and Bi-substitution were examined and found to exhibit enhanced power factor at 300 K. The Bi-substituted ingot had ZT∼0.39 at 300 K and ZT∼0.68 at 400 K. Carrier concentration and the mobility measurements are reported.

Crystal structure and magnetic and photocatalytic properties of a new ternary rare-earth mixed chalcogenide, Dy4S4Te3

2014 ◽  
Vol 2 (48) ◽  
pp. 20621-20628 ◽  
Author(s):  
Sheng-Ping Guo ◽  
Guo-Cong Guo
Keyword(s):  
Crystal Structure ◽  
Photocatalytic Activity ◽  
Rare Earth ◽  
High Temperature ◽  
Solid State ◽  
Rhodamine B ◽  
Solid State Reaction ◽  
Energy Gap ◽  
Halogen Lamp ◽  
Polycrystalline Powder

New mixed-chalcogenide Dy4S4Te3 was synthesized by a facile high-temperature solid-state reaction based on energy gap engineering, polycrystalline powder shows photocatalytic activity for the decomposition of rhodamine B under halogen lamp irradiation.

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