Crystal structure, synthesis and photoluminescent properties of a reddish-orange light emitting SrGdAlO4: Sm3+ nanophosphor

2019 ◽  
Vol 232 ◽  
pp. 39-48 ◽  
Author(s):  
Anju Hooda ◽  
S.P. Khatkar ◽  
Avni Khatkar ◽  
R.K. Malik ◽  
Jyoti Dalal ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Light Emitting ◽  
Structure Synthesis ◽  
Reddish Orange

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.

Crystal structure tailoring and luminescence tuning of Sr1−Ba Al2Si2O8:Eu2+ phosphors for white-light-emitting diodes

2019 ◽  
Vol 776 ◽  
pp. 554-559 ◽  
Author(s):  
Baochen Wang ◽  
Ziyao Wang ◽  
Yangai Liu ◽  
Tao Yang ◽  
Zhaohui Huang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
White Light Emitting Diodes

scholarly journals Reduction of operating voltage in organic light-emitting diode by corrugated photonic crystal structure

2004 ◽  
Vol 85 (23) ◽  
pp. 5769-5771 ◽  
Author(s):  
Masayuki Fujita ◽  
Tetsuya Ueno ◽  
Kuniaki Ishihara ◽  
Takashi Asano ◽  
Susumu Noda ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
Light Emitting Diode ◽  
Photonic Crystal Structure ◽  
Operating Voltage ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light

scholarly journals Crystal Structure, Synthesis and Biological Activity of Ether and Ester <i>Trans</i>-Ferulic Acid Derivatives

2018 ◽  
Vol 08 (04) ◽  
pp. 359-377 ◽  
Author(s):  
Marco A. Obregón-Mendoza ◽  
M. Mirian Estévez-Carmona ◽  
Yair Alvarez-Ricardo ◽  
William Meza-Morales ◽  
Carolina Escobedo-Martínez ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Biological Activity ◽  
Ferulic Acid ◽  
Structure Synthesis

scholarly journals Crystal structure of 2,3-bis(4-methylphenyl)benzo[g]quinoxaline

2018 ◽  
Vol 74 (4) ◽  
pp. 548-550
Author(s):  
Young-Inn Kim ◽  
Seong-Jae Yun ◽  
Sung Kwon Kang
Keyword(s):  
Crystal Structure ◽  
Rotation Axis ◽  
Ring System ◽  
Dihedral Angles ◽  
Aromatic Rings ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Compound C ◽  
Organic Light ◽  
Phenyl Rings

The title compound, C26H20N2, was obtained during a search for new π-extended ligands with the potential to generate efficient phosphors with iridium(III) for organic light-emitting devices (OLEDs). The benzoquinoxaline ring system is almost planar (r.m.s. deviation = 0.076 Å). A pseudo-twofold rotation axis runs through the midpoints of the C2—C3 and C9—C10 bonds. The two phenyl rings are twisted relative to the benzoquinoxaline ring system, making dihedral angles of 53.91 (4) and 36.86 (6)°. In the crystal, C—H...π (arene) interactions link the molecules, but no π–π interactions between aromatic rings are observed.

scholarly journals A novel single-phase white light emitting phosphor Ca9La(PO4)5(SiO4)F2:Dy3+: synthesis, crystal structure and luminescence properties

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24577-24583 ◽  
Author(s):  
Haikun Liu ◽  
Libing Liao ◽  
Maxim S. Molokeev ◽  
Qingfeng Guo ◽  
Yuanyuan Zhang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Solid State ◽  
White Light ◽  
Single Phase ◽  
Luminescence Properties ◽  
Light Emitting ◽  
State Technology

A novel single-phase white light emitting phosphor Ca9La(PO4)5(SiO4)F2:Dy3+ was prepared through traditional high-temperature solid state technology.

New reddish-orange and greenish-yellow light emitting phosphors: Eu3+ and Tb3+/Eu3+ in sodium germanate glass

2014 ◽  
Vol 153 ◽  
pp. 198-202 ◽  
Author(s):  
E. Álvarez ◽  
Ma. E. Zayas ◽  
J. Alvarado-Rivera ◽  
F. Félix-Domínguez ◽  
R.P. Duarte-Zamorano ◽  
...  
Keyword(s):  
Yellow Light ◽  
Germanate Glass ◽  
Light Emitting ◽  
Greenish Yellow ◽  
Reddish Orange
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