Solvothermal synthesis of SrMoO4:Ln (Ln=Eu3+, Tb3+, Dy3+) nanoparticles and its photoluminescence properties at room temperature

Novel single-crystalline SnO2 zigzag nanoribbons have been successfully synthesized by chemical vapour deposition. Sn powder in a ceramic boat covered with Si plates was heated at 1100°C in a flowing argon atmosphere to get deposits on a Si wafers. The main part of deposits is SnO2 zigzag nanoribbons. They were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM) and selected-area electron diffraction (SAED). SEM observations reveal that the SnO2 zigzag nanoribbons are almost uniform, with lengths near to several hundred micrometers and have a good periodically tuned microstructure as the same zigzag angle and growth directions. Possible growth mechanism of these zigzag nanoribbons was discussed. A room temperature PL spectrum of the zigzag nanoribbons shows three peaks at 373nm, 421nm and 477nm.The novel zigzag microstructures will provide a new candidate for potential application.

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Effect of the Nucleation Layer on TiO2 Nanoflowers Growth via Solvothermal Synthesis

MRS Proceedings ◽

10.1557/opl.2012.1604 ◽

2012 ◽

Vol 1479 ◽

pp. 95-100

Author(s):

Oscar A. Jaramillo ◽

Reshmi Raman ◽

Marina E. Rincón

Keyword(s):

Solvothermal Synthesis ◽

Room Temperature ◽

Active Surface ◽

Dip Coating ◽

Fixed Number ◽

Active Surface Area ◽

Nucleation Layer ◽

Sensing Properties ◽

Nucleation Sites ◽

Ethanol Sensing

ABSTRACTTiO2 nanoflowers were obtained on modified ITO substrates by solvothermal synthesis. Surface modification was achieved with a layer of TiO2 seeds/nucleus obtained by dip-coating at various pH and dip cycles. Field emission scanning electron microscopy results indicated that at all nucleation conditions there was a dual population of TiO2 nanoparticles and nanoflowers. For a particular pH, the effect of increasing the number of dips was to increase the size and number of the nanoflowers, whereas for a fixed number of dips, the increase in pH causes a decrease in nanoflower population. The comparison with solvothermal films obtained on unmodified substrates indicates that TiO2 nanoflowers grew up on the nucleation sites. These microstructural changes determine the active surface area and sensing properties of the solvothermal films. At room temperature, no evidence of superior ethanol sensing properties was found for TiO2 nanoflowers, which show larger resistivity than TiO2 nanoparticles.

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Photoluminescence of Ca4Ga2S7:Eu2+ in wide excitation intensity and temperature range

Modern Physics Letters B ◽

10.1142/s0217984921503929 ◽

2021 ◽

pp. 2150392

Author(s):

B. D. Urmanov ◽

M. S. Leanenia ◽

G. P. Yablonskii ◽

O. B. Taghiyev ◽

K. O. Taghiyev ◽

...

Keyword(s):

Room Temperature ◽

Laser Excitation ◽

Excitation Intensity ◽

Temperature Measurements ◽

Constant Time ◽

Photoluminescence Properties ◽

Temperature Range ◽

Chalcogenide Semiconductors ◽

Time Frames

Photoluminescence properties of [Formula: see text] chalcogenide semiconductors have been studied under the impulse laser excitation in the range of 10–105 W/cm2 at room temperature. This study has shown that as a result of excitation, photoluminescence of [Formula: see text] is characterized by the emission in the interval of 450–575 nm with significant domination in the spectra line at 660 nm. Photoluminescence of [Formula: see text] quenches at wavelengths of 560 nm and 660 nm with constant time frames 258 ns and 326 ns, respectively. Moreover, the temperature measurements of photoluminescence were performed on the samples in the temperature range of 10–300 K.

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Study of Photoluminescence Properties of CuxO Thin Films Prepared by Reactive Radio Frequency Magnetron Sputtering

MRS Proceedings ◽

10.1557/opl.2015.596 ◽

2015 ◽

Vol 1792 ◽

Author(s):

Jiantuo Gan ◽

Augustinas Galeckas ◽

Vishnukanthan Venkatachalapathy ◽

Heine N. Riise ◽

Bengt G. Svensson ◽

...

Keyword(s):

Thin Films ◽

Magnetron Sputtering ◽

Radio Frequency ◽

Room Temperature ◽

Quartz Substrate ◽

Rf Magnetron Sputtering ◽

Considerable Improvement ◽

Photoluminescence Properties ◽

Radio Frequency Magnetron Sputtering ◽

Room Temperature Photoluminescence

ABSTRACTCuxO thin films have been deposited on a quartz substrate by reactive radio frequency (rf) magnetron sputtering at different target powers Pt (140-190 W) while keeping other growth process parameters fixed. Room-temperature photoluminescence (PL) measurements indicate considerable improvement of crystallinity for the films deposited at Pt>170 W, with most pronounced excitonic features being observed in the film grown using Pt=190 W. These results corroborate well with the surface morphology of the films, which was found more flat, smooth and homogeneous for Pt >170 W films in comparison with those deposited at lower powers.

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Photoluminescence Properties of Eu-Doped MIL-53(Fe) Obtained by Solvothermal Synthesis

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2019.15922 ◽

2019 ◽

Vol 19 (2) ◽

pp. 1148-1150 ◽

Cited By ~ 2

Author(s):

Vinh Huu Nguyen ◽

Long Giang Bach ◽

Sy Trung Do ◽

Nguyen Thi Thuong ◽

Trinh Duy Nguyen

Keyword(s):

Solvothermal Synthesis ◽

Photoluminescence Properties

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Vanadium doped few-layer ultrathin MoS2 nanosheets on reduced graphene oxide for high-performance hydrogen evolution reaction

RSC Advances ◽

10.1039/c9ra03589c ◽

2019 ◽

Vol 9 (39) ◽

pp. 22232-22239 ◽

Cited By ~ 13

Author(s):

Ashwani Kumar Singh ◽

Jagdees Prasad ◽

Uday Pratap Azad ◽

Ashish Kumar Singh ◽

Rajiv Prakash ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Solvothermal Synthesis ◽

High Performance ◽

Room Temperature ◽

Mos2 Nanosheets ◽

Reduced Graphene ◽

Ultrathin Mos2 Nanosheets

In this paper, we demonstrate a facile solvothermal synthesis of a vanadium(v) doped MoS2-rGO nanocomposites for highly efficient electrochemical hydrogen evolution reaction (HER) at room temperature.

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