Passive optical limiting studies of nanostructured Cu doped ZnO–PVA composite thin films

Tamgadge, Y. S.; Sunatkari, A. L.; Talwatkar, S. S.; Pahurkar, V. G.; Muley, G.G.

doi:10.1016/j.optmat.2015.11.037

Cited by 50 publications

(7 citation statements)

References 47 publications

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“…Due to the rise in Er +3ions content per unit volume that helps the additional Er +3 -ions interact with the blend matrix during the nonlinear absorption processes, the additive of Er +3 -ions strengthens the investigated filter. [88][89][90] As a result, these composite films are highly applicable in optoelectronic applications. The most common uses of such an effect include applications in nonlinear optical systems and shielding delicate optical sensors and components against laser damage.…”

Section: Comparison Of Optical Characteristics With Other Polymer Dop...mentioning

confidence: 99%

Synthesis, characterization, and tailoring variations in the linear optical of erbium‐ions doped (PVA/PVP) polymeric composites for optical devices: Improvement of the dielectric characteristics

Mohammed

Yahia

El‐Mongy

2023

J of Applied Polymer Sci

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The simple solution casting method was utilized for preparing composite films (PVA-30 wt% PVP) incorporated with various content of erbium ions (Er 3+ ) (0.11, 0.37, 1.85, 3.7, 9.25, and 18.5) wt%. The composite films' properties were investigated using XRD, UV-Vis, and dielectric spectrometers. The XRD patterns showed a noticeable decline in structural elements, including crystallinity level. The transmittances of the investigated samples decrease as Er 3+ increases. Studies on UV-Vis absorption have revealed that the UV-Vis absorption spectra are shifting to the higher wavelengths, causing a decrease in the optical energy bandgap values from 4.66 to 3.48 eV for an indirect transition and from 5 to 4.84 eV for a direct transition, which suggests that the filler interacts with the blend matrix. As the number of localized states in the forbidden energy bandgap rises, it has been shown that with increasing Er 3+ -the estimated Urbach's energy increases from 1.95 to 32 meV. The addition of erbium ions raises the refractive index of the blend film. The optical limits of the samples are investigated using a He-Ne laser beam with a wavelength of 632.8 nm and a solid-state green diode laser beam with a wavelength of 532 nm. The prospect of greater charge carrier concentration and mobility was confirmed by increased AC conductivity with increasing frequency. Dielectric permittivity and dielectric loss tangent were utilized to analyze dielectric behavior. The analysis of the electric modulus (M 0 and M 00 ) of as-prepared samples has been completed. These findings are anticipated to notably impact a broad spectrum of applications, including organic semiconductors, optoelectronic devices, polymer solar cells, and polymer waveguides. K E Y W O R D Sdielectric characteristics, erbium ions (Er 3+ )-doped PVA/PVP, optical limiting/CUT-OFF laser filters, refractive index-bandgap analysis, XRD/FTIR

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Section: Comparison Of Optical Characteristics With Other Polymer Dop...mentioning

confidence: 99%

Synthesis, characterization, and tailoring variations in the linear optical of erbium‐ions doped (PVA/PVP) polymeric composites for optical devices: Improvement of the dielectric characteristics

Mohammed

Yahia

El‐Mongy

2023

J of Applied Polymer Sci

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“…The presence of a single LSPR peak suggests spherical shape of GNPs. [36][37][38][39] It is noticed that when the stabilizer L-ascorbic acid concentration increased from 1 to 5 mM, the LSPR peak shied to 520 nm. A blue shi in the LSPR peak from 540 to 522 nm for colloidal GNPs and from 545 to 525 nm for the GNP-PVP nanocomposite along with peak broadening indicated the decrease in GNP size as expected according to the Mie theory.…”

Section: Uv-visible Study Of Colloidal Gnps and Gnp-pvp Matrixmentioning

confidence: 99%

Surfactant-dependant thermally induced nonlinear optical properties of l-ascorbic acid-stabilized colloidal GNPs and GNP–PVP thin films

et al. 2019

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“…For UV PD application, ZnO nanoparticles could be promising candidates owing to their unique properties [9][10][11]. However, ZnO nanostructures suffer from fast recombination of excited electrons and holes, which may obstruct the general electrical performance of the PDs [12].…”

Section: Introductionmentioning

confidence: 99%

Effects of plasmon resonance on the low frequency noise and optoelectronic properties of Au/Cu codoped ZnO based photodetectors

Elkamel

Hamdaoui²,

Mezni³

et al. 2022

Opt Quant Electron

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We have investigated the effect of Au nanoparticles on the low frequency noise and current-voltage of Au/Cu doped ZnO nanoparticles (Nps) based photodetectors (PDs). Besides, 1/f noise of Cu doped ZnO is studied with and without Au Nps conditions and varied bias voltages. The Au/Cu codoped ZnO Nps showed much lower 1/f noise and higher normalized photocurrent to the dark current ratio (NPDR) than Cu doped ZnO Nps and undoped ZnO Nps. This enhancement may be attributed to the effect of localized surface Plasmon resonances (LSPR). Furthermore, the noise equivalent power (NEP) and the detectivity (D * ) were determined using low frequency noise measurements. The observed low frequency noise performances could be used for Au/Cu codoped ZnO Nps based UV photodetectors.

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Passive optical limiting studies of nanostructured Cu doped ZnO–PVA composite thin films

Cited by 50 publications

References 47 publications

Synthesis, characterization, and tailoring variations in the linear optical of erbium‐ions doped (PVA/PVP) polymeric composites for optical devices: Improvement of the dielectric characteristics

Synthesis, characterization, and tailoring variations in the linear optical of erbium‐ions doped (PVA/PVP) polymeric composites for optical devices: Improvement of the dielectric characteristics

Surfactant-dependant thermally induced nonlinear optical properties of l-ascorbic acid-stabilized colloidal GNPs and GNP–PVP thin films

Effects of plasmon resonance on the low frequency noise and optoelectronic properties of Au/Cu codoped ZnO based photodetectors

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