Improvement of thermal stability and luminescence in Ca6Ce2Na2(PO4)6F2:Mn2+/Tb3+via the substitution of Ca with Sr/Ba for structural modification

2021 ◽  
Vol 45 (6) ◽  
pp. 3202-3209
Author(s):  
Li Zhang ◽  
Zhijun Wang ◽  
Danjie Dai ◽  
Zhenhua Xing ◽  
Jinxin Zhao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Solid State ◽  
Structural Modification ◽  
Solid State Method ◽  
State Method

A series of Ca6−x−ySrxBayCe2Na2(PO4)6F2 (CMCNPF, M = Sr2+/Ba2+), CMCNPF:0.1Mn2+ and CMCNPF:0.1Tb3+ phosphors were synthesized by a high temperature solid-state method.

scholarly journals A single-phase white light emitting phosphor Ba3Y(PO4)3:Ce3+/Tb3+/Mn2+: luminescence, energy transfer and thermal stability

RSC Advances ◽  
2019 ◽  
Vol 9 (52) ◽  
pp. 30406-30418 ◽  
Author(s):  
Yun Chen ◽  
Wenge Ding ◽  
Panlai Li ◽  
Xue Li ◽  
Qi Bao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Energy Transfer ◽  
High Temperature ◽  
Solid State ◽  
White Light ◽  
Single Phase ◽  
Solid State Method ◽  
Light Emitting ◽  
State Method

A series of Ce3+/Tb3+, Tb3+/Mn2+ and Ce3+/Tb3+/Mn2+ doped Ba3Y(PO4)3 were synthesized by the high temperature solid state method.

Photoluminescence Properties of Ca3Si2O7: Pr3+ Orange-Red Phosphors Prepared by High-Temperature Solid-State Method

2018 ◽  
Vol 73 (6) ◽  
pp. 555-558 ◽  
Author(s):  
Zhi-Qing Peng ◽  
Rong Chen ◽  
Wen-Lin Feng
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Solid State ◽  
Solid State Method ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Red Phosphors ◽  
Typical Sample ◽  
State Method ◽  
Xrd Patterns

AbstractNovel luminescent materials Ca3-xSi2O7: xPr3+ were successfully prepared by the high-temperature solid-state method. The crystal structure, morphology, and optical spectrum were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM), and spectroscopy, respectively. The XRD patterns of the samples indicate that the crystal structure is monoclinic symmetry. The SEM shows that the selected sample has good crystallinity although its appearance is irregular and scalelike. The peak of the excitation spectrum of the sample is located at around 449 nm, corresponding to 3H4→3P2 transition of Pr3+. The peak of the emission spectrum of the sample is situated at around 612 nm which is attributed to 3P0→3H6 transition of Pr3+, and the colour is orange-red. The optimum concentration for Pr3+ replaced Ca2+ sites in Ca3Si2O7: Pr3+ is 0.75 mol%. The lifetime (8.48 μs) of a typical sample (Ca2.9925Pr0.0075)Si2O7 is obtained. It reveals that orange-red phosphors Ca3-xSi2O7: xPr3+ possess remarkable optical properties and can be used in white light emitting devices.

Improvement the thermal stability of bluish-cyan emitting phosphor Y2MgAl4SiO12:Eu2+ using substitution cations (Zn, Ca, Sr) for white LEDs

CrystEngComm ◽  
2021 ◽  
Author(s):  
Huifang Yang ◽  
Panlai Li ◽  
Zejun Ye ◽  
Xiaoxue Huo ◽  
Yu Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Solid State Method ◽  
White Leds ◽  
State Method ◽  
Thermal Stability Of

A series of bluish-cyan color adjustable phosphors Y2MgAl4SiO12:xEu2+(YMAS) and Y2(Mg1-y,My)Al4SiO12:Eu2+ (M=Zn, Ca, Sr) were synthesized by the solid-state method. The thermal stability can be improved by modifying cation, especially, the...

Photoluminescence Properties of K1-xSr4(BO3)3∶xPr3+ Phosphors Prepared by High-Temperature Solid-State Method

2017 ◽  
Vol 37 (5) ◽  
pp. 0516001
Author(s):  
马诗章 Ma Shizhang ◽  
冯文林 Feng Wenlin ◽  
彭志清 Peng Zhiqing
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Photoluminescence Properties ◽  
Solid State Method ◽  
State Method

Crystal structure, luminescence properties, energy transfer, tunable occupation and thermal properties of a novel color-tunable phosphor NaBa1−zSrzB9O15:xCe3+,yMn2+

2018 ◽  
Vol 47 (39) ◽  
pp. 13913-13925 ◽  
Author(s):  
Qi Bao ◽  
Zhijun Wang ◽  
Jiang Sun ◽  
Zhipeng Wang ◽  
Xiangyu Meng ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Energy Transfer ◽  
Thermal Properties ◽  
High Temperature ◽  
Solid State ◽  
Luminescence Properties ◽  
Solid State Method ◽  
Color Tunable ◽  
State Method

A series of color-tunable NaBa1−zSrzB9O15:Ce3+,Mn2+ phosphors were synthesized by a high temperature solid state method.

Design and synthesis of Ba3SiSe5 with suitable birefringence modulated via MIV atoms in Ba-MIV-Q (MIV = Si, Ge; Q = S, Se) system

2021 ◽  
Author(s):  
Huanhuan Cheng ◽  
Abudukadi Tudi ◽  
Peng Wang ◽  
Kewang Zhang ◽  
Zhihua Yang ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Method ◽  
Orthorhombic System ◽  
Space Group ◽  
Design And Synthesis ◽  
Centrosymmetric Space Group ◽  
System P ◽  
State Method

A new ternary Ba-based selenide, Ba3SiSe5, was synthesized by high-temperature solid-state method. It crystalizes in the centrosymmetric space group Pnma (No. 62) of the orthorhombic system. The structure of the...

Effect of NaNO3 as Enhancer on YBa2Cu4O8 Superconductor Phase Formation via Solid State Technique with Heating at Ordinary Oxygen Pressure

2016 ◽  
Vol 840 ◽  
pp. 326-330
Author(s):  
Choon Min Cheong ◽  
Nursyafiqah Ismail ◽  
Noor Azlina Mohd Sarip ◽  
Noor Hakimah Hamzah ◽  
Nur Aleeya Ameera Ruzman ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Phase Formation ◽  
Oxygen Pressure ◽  
Formation Processes ◽  
Research Groups ◽  
Solid State Method ◽  
Conventional Solid State Method ◽  
State Technique ◽  
State Method

YBa2Cu4O8 has emerged as better choice in superconducting application thank to it strong thermal stability. High pressure techniques had been employed for the preparation of YBa2Cu4O8 but it might costly and/or inconvenient. Several research groups had showed that the YBa2Cu4O8 can also be prepared by conventional solid state method with heating at 1 atm oxygen pressure; however the phase formation processes are yet brief and clear. This work infiltrated the phase formation processes in preparing the YBa2Cu4O8 under solid state method with heating at 1 atm oxygen pressure. The effectiveness of the use of sodium nitrate as an enhancer was brought to light by the experiment results. Significant YBa2Cu4O8 phases were successfully synthesized.

Upconversion Luminescent Properties of YVO4:Tm3+, Ho3+, Yb3+

2012 ◽  
Vol 502 ◽  
pp. 132-135 ◽  
Author(s):  
Jia Yue Sun ◽  
Ji Cheng Zhu ◽  
Jun Hui Zeng ◽  
Zhi Guo Xia ◽  
Hai Yan Du
Keyword(s):  
Optical Properties ◽  
High Temperature ◽  
Solid State ◽  
Laser Diode ◽  
Luminescent Properties ◽  
Solid State Method ◽  
State Method ◽  
Co Doped

YVO4 co-doped with Tm3+/Ho3+/Yb3+ were synthesized by the high temperature solid state method and the optical properties of phosphors were characterized. Intense visible emissions centered at around 475, 541 and 649 nm, originated from the transitions of Tm3+:1G4→3H6, Ho3:5S2/>:5F4 →5I8, Tm3+:5G4→3F4 and Ho3+:5F5→5I8, respectively, have been observed in samples upon excitation with a 980 nm laser diode, and the involved mechanisms have been explained.

A series of tunable emission phosphors of Sm3+, Eu3+ and Mn2+ doped Ba3Tb(PO4)3: luminescence and energy transfer

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 71735-71742 ◽  
Author(s):  
Ting Li ◽  
Panlai Li ◽  
Zhijun Wang ◽  
Shuchao Xu ◽  
Qiongyu Bai ◽  
...  
Keyword(s):  
Energy Transfer ◽  
High Temperature ◽  
Solid State ◽  
Solid State Method ◽  
State Method ◽  
Tunable Emission

A series of activator Sm3+, Eu3+, Mn2+ ion doped Ba3Tb(PO4)3 phosphors with tunable emitting color were synthesized via the high temperature solid state method.

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