Structural properties and luminescence dynamics of CaZrO3:Eu3+ phosphors

2021 ◽  
Author(s):  
Arup K. Kunti ◽  
Nirmalendu Patra ◽  
Richard A. Harris ◽  
Shailendra K. Sharma ◽  
Dibyendu Bhattacharyya ◽  
...  
Keyword(s):  
Structural Properties ◽  
Doping Concentration ◽  
Luminescence Properties ◽  
Red Phosphors ◽  
Luminescence Dynamics

In the present work, the effect of Eu3+ doping concentration on the structural and luminescence properties of Eu3+ doped CaZrO3 red phosphors was investigated.

scholarly journals Enhanced luminescence properties of Ca1+xSr2−xAl2O6:Eu3+ (0 ≤ x ≤ 1) red phosphors based on composition modulation

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12981-12989
Author(s):  
Biao Shen ◽  
Jianghang Xu ◽  
Qinan Mao ◽  
Jiasong Zhong
Keyword(s):  
Optical Properties ◽  
Quantum Efficiency ◽  
Luminescence Properties ◽  
Composition Modulation ◽  
Red Phosphors ◽  
Potential Applications ◽  
Enhanced Luminescence

A series of Ca1+xSr2−xAl2O6:Eu3+ (0 ≤ x ≤ 1) red-emitting phosphors with adjustable optical properties and excellent quantum efficiency was developed for potential applications in warm WLEDs.

Effect of doping concentration on particle growth and luminescence properties of monodispersed Dy3+: Y2O3

2016 ◽  
Vol 664 ◽  
pp. 304-310 ◽  
Author(s):  
Song Hu ◽  
Xianpeng Qin ◽  
Guohong Zhou ◽  
Xiaoxia Liu ◽  
Chunhua Lu ◽  
...  
Keyword(s):  
Doping Concentration ◽  
Particle Growth ◽  
Luminescence Properties ◽  
Effect Of Doping

Fabrication and Luminescence Properties of CaMoO4:Eu3+ Red Phosphors for White LED

2010 ◽  
Vol 663-665 ◽  
pp. 441-444
Author(s):  
Zhen Hua Liang ◽  
Yu Zhi Feng ◽  
Xiao Xia Liu ◽  
Gui Hua Peng
Keyword(s):  
Luminescent Properties ◽  
Luminescence Properties ◽  
Precipitation Method ◽  
White Led ◽  
Doping Amount ◽  
Red Phosphors ◽  
Co Precipitation ◽  
The Relationship

CaMoO4: Eu3+ red phosphors were synthesized by co-precipitation method with H3BO3 as an additive and the relationship between H3BO3 doping amount and luminescent properties were studied. The brightness increased with increasing H3BO3 amount, the brightness of the CaMoO4: Eu3+ powder with 10 mol％ H3BO3 was 3.2 times higher than that of the phosphor without H3BO3.

Co-precipitation Synthesis and Luminescence Properties of Na2TiF6∶Mn4+Red Phosphors for Warm White Light Emitting Diodes

2015 ◽  
Vol 36 (12) ◽  
pp. 1402-1408 ◽  
Author(s):  
罗 洋 LUO Yang ◽  
江建青 JIANG Jian-qing ◽  
侯得健 HOU De-jian ◽  
游维雄 YOU Wei-xiong ◽  
叶信宇 YE Xin-yu
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Luminescence Properties ◽  
Light Emitting ◽  
Red Phosphors ◽  
Warm White Light ◽  
Precipitation Synthesis ◽  
Co Precipitation ◽  
White Light Emitting Diodes

Modification of the crystal structure of Sr2−xBaxSi(O,N)4: Eu2+ phosphors to improve their luminescence properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (47) ◽  
pp. 9123-9134 ◽  
Author(s):  
Xiaojun Li ◽  
Youjie Hua ◽  
Hongping Ma ◽  
Degang Deng ◽  
Shiqing Xu
Keyword(s):  
Crystal Structure ◽  
White Light ◽  
Light Emitting Diodes ◽  
Luminescence Properties ◽  
Light Emitting ◽  
Red Phosphors ◽  
White Light Emitting Diodes

A series of Sr1.98−xBaxSi(O,N)4: 0.02Eu2+ (0 ≤ x ≤ 0.5) phosphors were synthesized. We anticipate that these materials can be used as green or red phosphors in white light emitting diodes.

Luminescence properties of Na2SiF6:Mn4+red phosphors for high colour-rendering white LED applications synthesized via a simple exothermic reduction reaction

2017 ◽  
Vol 1 (5) ◽  
pp. 928-932 ◽  
Author(s):  
Tian-Chun Lang ◽  
Tao Han ◽  
Ling-Ling Peng ◽  
Ming-Jing Tu
Keyword(s):  
Emission Spectra ◽  
Reduction Reaction ◽  
Luminescence Properties ◽  
White Led ◽  
Red Emission ◽  
Red Phosphors ◽  
Colour Rendering

Na2SiF6:Mn4+red phosphors were synthesizedviaa simple exothermic reduction reaction, and produced a sharp red emission spectra.

Mn4+ nonequivalent-doped Al3+-based cryolite high-performance warm WLED red phosphors

2019 ◽  
Vol 43 (37) ◽  
pp. 14859-14871 ◽  
Author(s):  
Feng Hong ◽  
Haiping Xu ◽  
Liu Yang ◽  
Guixia Liu ◽  
Chao Song ◽  
...  
Keyword(s):  
High Performance ◽  
Luminescence Properties ◽  
Red Phosphors ◽  
Controlled Morphology

Mn4+ nonequivalent-doped Al3+-based cryolite red phosphors with controlled morphology and optimized luminescence properties for high-performance warm WLEDs.

Effect of Molten Salt on Synthesis and Luminescence Properties of YVO4:Eu3+ Red Phosphors

2020 ◽  
Vol 94 (5) ◽  
pp. 1078-1082
Author(s):  
Xiaochun Zhou ◽  
Xiaojun Wang
Keyword(s):  
Molten Salt ◽  
Luminescence Properties ◽  
Red Phosphors

Synthesis and Photoluminescence Properties of Sc0.88-xLu0.05VO4:Eu3+0.07,Bi3+x Red Phosphor

2017 ◽  
Vol 727 ◽  
pp. 604-611
Author(s):  
Di Wu ◽  
Xin Yu Ye ◽  
Xin Hua Yang ◽  
Jian Zhou ◽  
Xiao Qiang Wen ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Emission Intensity ◽  
Doping Concentration ◽  
Internal Quantum Efficiency ◽  
The Body ◽  
Luminescence Spectra ◽  
Intensity Increase ◽  
X Ray Diffraction ◽  
Red Phosphor ◽  
Red Phosphors

Sc0.88-xLu0.05VO4:Eu3+0.07,Bi3+x(0≤x≤0.05) red phosphors were synthesized by solid state reaction at 1200°C for 3h. The structure, morphology and luminescence spectra of samples are investigated by X-ray diffraction (XRD), Scanning electron microscope (SEM) and fluorescence spectrophotometer, respectively. The samples doped with Eu3+, Lu3+ and Bi3+ maintain the body-centered tetragonal structure of ScVO4 and the morphology remains essentially unchanged with slight agglomeration. The excitation spectrum of Sc0.88-xLu0.05VO4:Eu3+0.07,Bi3+x emerged redshift and the excitation intensity increase within the near UV excitation (360-400nm). The optimum doping concentration of Bi3+ is 0.02(x value), and the maximum emission intensity of Sc0.86Lu0.05VO4:Eu3+0.07,Bi3+0.02 is higher than 88 % in comparison with Sc0.88Lu0.05VO4:Eu3+0.07 under 365 nm excitation. Decay curve of 5D0 state for as-prepared samples fits the single order exponential behavior, the lifetime of 5D0 increase first and then decrease with the increase of Bi3+ doping concentration. The internal quantum efficiency is up to 74.08% under 365nm excitation; When the temperature raises to 200°C, the emission intensity maintains 79% of that in the room temperature. Sc0.86Lu0.05VO4:Eu3+0.07,Bi3+0.02 phosphor show high internal quantum efficiency and thermal stability, which is suitable for the UV-pumped white LED as red phosphor.

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