Energy transfer dynamics and time resolved photoluminescence in BaWO4:Eu3+ nanophosphors synthesized by mechanical activation

2017 ◽  
Vol 41 (17) ◽  
pp. 8947-8958 ◽  
Author(s):  
Paramananda Jena ◽  
Santosh K. Gupta ◽  
Narendra Kumar Verma ◽  
Akhilesh Kumar Singh ◽  
R. M. Kadam
Keyword(s):  
Energy Transfer ◽  
Mechanical Activation ◽  
Quantum Efficiency ◽  
Time Resolved ◽  
High Quantum Efficiency ◽  
Red Phosphor ◽  
White Leds ◽  
High Quantum ◽  
Time Resolved Photoluminescence

Red purity and high quantum efficiency of BaWO4:Eu3+ projects it as a new red phosphor for application in white LEDs.

scholarly journals Red phosphor based on Eu3+-isoelectronically doped Ba2SiO4 obtained via sol–gel route for solid state lightning

RSC Advances ◽  
2017 ◽  
Vol 7 (85) ◽  
pp. 53752-53762 ◽  
Author(s):  
Airton G. Bispo ◽  
Diego A. Ceccato ◽  
Sergio A. M. Lima ◽  
Ana. M. Pires
Keyword(s):  
Solid State ◽  
Quantum Efficiency ◽  
Sol Gel ◽  
High Quantum Efficiency ◽  
Red Phosphor ◽  
White Leds ◽  
High Quantum

Ba2SiO4:Eu3+ red phosphor with high quantum efficiency synthesized via sol–gel route as a candidate to white LEDs component is introduced. An approach for the 0–0 Eu3+ transition anomalous emission due to Eu3+–O2− associates is also provided.

ZnSe:Mn/ZnS High Temperature Nanophosphors with Very High Quantum Efficiency for White LEDs

2012 ◽  
Author(s):  
Brian A. Akins ◽  
Antonio C. Rivera ◽  
Nathaniel C. Cook ◽  
Gennady A. Smolyakov ◽  
Marek Osiński
Keyword(s):  
High Temperature ◽  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
White Leds ◽  
High Quantum ◽  
Very High

High quantum efficiency Ce:(Lu,Y)3(Al,Sc)2Al3O12 transparent ceramics with excellent thermal stability for high-power white LEDs/LDs

2020 ◽  
Vol 8 (46) ◽  
pp. 16427-16435
Author(s):  
Yuelong Ma ◽  
Le Zhang ◽  
Tianyuan Zhou ◽  
Chen Hou ◽  
Jian Kang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Efficiency ◽  
High Power ◽  
Light Emitting Diode ◽  
Transparent Ceramics ◽  
High Quantum Efficiency ◽  
Excellent Thermal Stability ◽  
Light Emitting ◽  
White Leds ◽  
High Quantum

Transparent ceramics (TCs) with high quantum efficiency and excellent thermal stability are essential for the applications in high-power remote excitation white light-emitting diode or laser diode (LED/LD) lighting devices as color convertors.

scholarly journals Novel Eu3+-activated Ba2Y5B5O17 red-emitting phosphors for white LEDs: high color purity, high quantum efficiency and excellent thermal stability

RSC Advances ◽  
2018 ◽  
Vol 8 (41) ◽  
pp. 23323-23331 ◽  
Author(s):  
G. Annadurai ◽  
Balaji Devakumar ◽  
Heng Guo ◽  
R. Vijayakumar ◽  
Bin Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Efficiency ◽  
Color Purity ◽  
High Quantum Efficiency ◽  
Excellent Thermal Stability ◽  
White Leds ◽  
High Quantum ◽  
High Color Purity ◽  
Red Emitting Phosphor

A novel Ba2Y5B5O17:Eu3+ red-emitting phosphor with high color purity, high quantum efficiency and excellent thermal stability was developed.

scholarly journals Optical Properties of Red-Emitting Rb2Bi(PO4)(MoO4):Eu3+ Powders and Ceramics with High Quantum Efficiency for White LEDs

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3275 ◽  
Author(s):  
Grigorjevaite ◽  
Ezerskyte ◽  
Minderyte ◽  
Stanionyte ◽  
Juskenas ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Efficiency ◽  
Red Light ◽  
Light Sources ◽  
Quenching Temperature ◽  
High Quantum Efficiency ◽  
White Leds ◽  
High Quantum ◽  
Powder Samples ◽  
Colour Coordinates

There are several key requirements that a very good LED phosphor should meet, i.e., strong absorption, high quantum efficiency, high colour purity, and high luminescence quenching temperature. The reported Rb2Bi(PO4)(MoO4):Eu3+ phosphors have all these properties. The Rb2Bi(PO4)(MoO4):Eu3+ phosphors emit bright red light if excited with near-UV radiation. The calculated colour coordinates show good stability in the 77–500 K temperature range. Moreover, sample doped with 50% Eu3+ possesses quantum efficiency close to unity. Besides the powder samples, ceramic disks of Rb2Eu(PO4)(MoO4) specimen were also prepared, and the red light sources from these disks in combination with near-UV emitting LED were fabricated. The obtained results indicated that ceramic disks efficiently absorb the emission of 375 and 400 nm LED and could be applied as a red component in phosphor-converted white LEDs.

Controlled synthesis and luminescent properties of assembled spherical YPxV1−xO4:Ln3+ (Ln = Eu, Sm, Dy or Tm) phosphors with high quantum efficiency

RSC Advances ◽  
2015 ◽  
Vol 5 (65) ◽  
pp. 52533-52542 ◽  
Author(s):  
Zhibin An ◽  
Xiuzhen Xiao ◽  
Jun Yu ◽  
Dongsen Mao ◽  
Guanzhong Lu
Keyword(s):  
Energy Transfer ◽  
Hydrothermal Method ◽  
Quantum Efficiency ◽  
Luminescent Properties ◽  
Controlled Synthesis ◽  
High Quantum Efficiency ◽  
High Quantum ◽  
Controlled Morphology

Controlled morphology and energy transfer in assembled spherical YPxV1−xO4:Ln3+ (Ln = Eu, Sm, Dy or Tm) phosphors with higher luminescent quantum efficiency by the EDTA-assisted hydrothermal method.

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