Synthesis and characterization of Ce3+-doped flowerlike ZnS nanorods

Shanmugam, N.; Cholan, S.; Viruthagiri, G.; Gobi, R.; Kannadasan, N.

doi:10.1007/s13204-013-0217-x

Cited by 32 publications

(13 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the IR spectra of the same ZnS layers but deposited on porous AAO substrates (Figure 5b,c), distinct absorption peaks are visible, which enable chemical and structural analysis of the layers. A broad vibration centered at ~3450-3650 cm −1 , present both in Figure 5b,c, is due to the stretching vibrations of O-H bond (v(OH)) of adsorbed water [29][30][31][32][33]. The vibration confirms the presence of moisture on the surface of ZnS thin films.…”

Section: Resultsmentioning

confidence: 63%

“…Apart from the bands that can be associated with PDT chemical groups, in the IR spectra there are dips that originate from other functional groups. For instance, a weak band at 2361 cm −1 can be attributed to the C=O stretching mode (v3(CO2)) of absorbed CO2 [32,36,40]. The bands at 1559 and 1586 cm −1 were previously associated with C=O stretching vibrations of the absorbed CO2 as well [29,41,42], but could also come from the products of the DEZ and PDT surface reaction.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Infrared Absorption Study of Zn–S Hybrid and ZnS Ultrathin Films Deposited on Porous AAO Ceramic Support

2020

View full text Add to dashboard Cite

Infrared (IR) spectroscopy is a powerful technique to characterize the chemical structure and dynamics of various types of samples. However, the signal-to-noise-ratio drops rapidly when the sample thickness gets much smaller than penetration depth, which is proportional to wavelength. This poses serious problems in analysis of thin films. In this work, an approach is demonstrated to overcome these problems. It is shown that a standard IR spectroscopy can be successfully employed to study the structure and composition of films as thin as 20 nm, when the layers were grown on porous substrates with a well-developed surface area. In contrast to IR spectra of the films deposited on flat Si substrates, the IR spectra of the same films but deposited on porous ceramic support show distinct bands that enabled reliable chemical analysis. The analysis of Zn-S ultrathin films synthesized by atomic layer deposition (ALD) from diethylzinc (DEZ) and 1,5-pentanedithiol (PDT) as precursors of Zn and S, respectively, served as proof of concept. However, the approach presented in this study can be applied to analysis of any ultrathin film deposited on target substrate and simultaneously on porous support, where the latter sample would be a reference sample dedicated for IR analysis of this film.

show abstract

Section: Resultsmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 99%

Infrared Absorption Study of Zn–S Hybrid and ZnS Ultrathin Films Deposited on Porous AAO Ceramic Support

2020

View full text Add to dashboard Cite

show abstract

“…For example, Wang and colleagues reported that Ce‐YVO 4 crystals could be used in white light‐emitting diodes (LEDs) . With the development of nanoscience and technology, Ce‐doped nanoparticles have been synthesized using different methods such as sol–gel, hydrothermal, chemical precipitation, electrochemistry, templates, photo‐induced conversion, and biological synthesis techniques . However reports on the synthesis of Ce‐doped YVO 4 nanoparticles are limited.…”

Section: Introductionmentioning

confidence: 97%

Luminescence investigation of a cerium‐doped yttrium vanadate phosphor

Rajendra¹,

Pandurangappa²

2019

Luminescence

View full text Add to dashboard Cite

Cerium (Ce 3+ )-doped (1, 3, and 7 mol%) yttrium vanadate phosphors were prepared using a co-precipitation technique. The structural and optical properties of the synthesized samples were studied using X-ray diffraction (XRD), Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), optical absorption, and photoluminescence (PL) spectroscopy techniques. The tetragonal structure and the formation of the nanosized crystallites in the YVO 4 :Ce phosphor were confirmed using XRD analysis. HR-TEM morphology showed rod-like nanoparticles of different sizes. Optical absorption spectra demonstrated strong absorption bands at 268 and 276 nm. PL spectra showed strong peaks at 546, 574, and 691 nm following excitation at 300 nm. The calculated CIE chromaticity coordinates demonstrated that YVO 4 :Ce could be used as a novel phosphor for the development of light-emitting diode lamps.

show abstract

“…They doped with different metal ions produce new door for optical studies and potential applications in optical device fabrication. Among the semiconductors, ZnS is a well known II-VI group semiconductor with a energy band gap of 3.6 eV and is widely used as a phosphor and in luminescent device [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Transition metal ions doped ZnS nanoparticles have received much attention due to their exceptional luminescent properties. During the past decades, luminescent properties have been extensively investigated on Mn doped ZnS [1], Cu doped ZnS [2], Ag doped ZnS [3], Ce doped ZnS [4] and Pb doped ZnS nanoparticles [5]. Large third-order optical nonlinearity can be expected from ZnS nanoparticles due to its exceptional luminescent properties.…”

Section: Introductionmentioning

confidence: 99%

Study on the Third-Order Nonlinear Optical Properties of Cd2+ Ion Doped Zns/PVP Nanocomposite FilmsB. Suresh1, S. Ramachandran1 and G. Shanmugam2

Suresh¹,

Ramachandran²,

Shanmugam³

2021

Preprint

View full text Add to dashboard Cite

Cd2+ ion doped ZnS/PVP nanocomposite films have been prepared using in-situ chemical method. XRD studies confirm the cubic structure of ZnS for all the films and the nanocrystallite size of ZnS is found to varying from 3.82 to 4.07 nm with Cd doping. The morphology of the films has been analyzed using SEM micrograph which shows the mono dispersion of ZnS nanoparticles in PVP matrix. The interaction between ZnS nanoparticles and PVP polymer matrix has been discussed using FTIR spectra. Optical absorption spectra of the films reveal the blue shift on the absorbance onset with the comparison of bulk ZnS and the estimated optical band gap energy decreases with increasing the concentration of Cd dopant. Photoluminescence spectra show a blue emission peak for all the films. The Z-scan results of three samples show a reverse saturation absorption process in open Z-scan experiment and self-focusing behavior in closed Z-scan experiment. Both ZnS/PVP and Cd2+ ion doped ZnS/PVP films exhibited the large optical nonlinearity and the value of nonlinear refractive index (n2), nonlinear absorption coefficient (β), third-order nonlinear optical susceptibility (χ(3)) and figure of merit (FOM) increase with Cd doping. The estimated n2, β, χ(3) and FOM values were found to be high for 6 mol% Cd doped ZnS/PVP nanocomposite film and they are about 1.771⋅10− 10 m2 W− 1, 4.148⋅10− 3 mW− 1, 1.603⋅10− 4 esu and 9.576⋅10− 6 esu m respectively. The experimental results clearly showed that the Cd2+ ion doped ZnS/PVP nanocomposite film is a worthy candidate for the future nonlinear optical device fabrication.

show abstract

Synthesis and characterization of Ce3+-doped flowerlike ZnS nanorods

Cited by 32 publications

References 15 publications

Infrared Absorption Study of Zn–S Hybrid and ZnS Ultrathin Films Deposited on Porous AAO Ceramic Support

Infrared Absorption Study of Zn–S Hybrid and ZnS Ultrathin Films Deposited on Porous AAO Ceramic Support

Luminescence investigation of a cerium‐doped yttrium vanadate phosphor

Study on the Third-Order Nonlinear Optical Properties of Cd2+ Ion Doped Zns/PVP Nanocomposite FilmsB. Suresh1, S. Ramachandran1 and G. Shanmugam2

Contact Info

Product

Resources

About