Photo-activation of Ag chemicals for enhanced Nb2O5 optoelectronic device employing plasmonic effects

Salim, Evan T.; Shafeeq, Suhair R.; AbdulRazzaq, Mohammed Jalal; Fakhri, Makram A.; Gopinath, Subash C. B.

doi:10.1016/j.surfin.2022.102618

Cited by 19 publications

(10 citation statements)

References 67 publications

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“…According to a previous study, a rise in the peak intensities assures that the Ag nanoparticles are incorporated into the base material's lattice 52 . Table 1 indicates that the experimental values and measured lattice constants are similar 81 .…”

Section: Resultsmentioning

confidence: 89%

“…The ideality factors were both higher than the ideal value (1) indicating for non-ideality operation of the pn-heterojunction based photodetector. This can be attributed to the mechanism of tunneling, LiNbO 3 crystal defects including oxygen vacancies, mismatching between the lattice of LiNbO 3 and the silicon based wafer, and disorder in surface morphologies 52 . The lower value belonged to the Ag decorated LiNbO 3 can be as a result of the enhanced built-in potential and barrier height (as the barrier height is inversely proportional to the ideality factor).…”

Section: Electrical Properties Of Linbo 3 / Si And...mentioning

confidence: 99%

“…Evan T. Salim et al incorporated silver NPs into Nb 2 O 5 nano matrix structure by photo activation mechanism. The enhanced Nb 2 O 5 thin films by the plamonic effect of silver noble metal NPs were employed in fabricating a p–n heterojunction photodetector 52 . Li et al showed how to create an iron-doped (Fe-doped) LiNbO 3 /n-Si heterojunction for use in integrated optics and electro-Photonics 53 .…”

Section: Introductionmentioning

confidence: 99%

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Silver decorated lithium niobat nanostructure by UV activation method for silver–lithium niobate/silicon heterojunction device

Salim

Khalef

Fakhri

et al. 2023

Sci Rep

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Lithium niobite (LiNbO3) nanostructure were successfully synthesized by chemical bath deposition method (CBD) and then decorated with silver nitrate (AgNO3) through UV activation method at different immersion durations (5, 15, 25, 35, and 45 s). The silver nanoparticles (AgNPs) effects on the optical and structural properties were studied and analyzed using various scientific devices and technique. X-ray diffraction (XRD) results showed that all the samples have a hexagonal structure with a maximum diffraction peak at the (012), and the existence of silver atoms could be recognized at 2θ = 38.2° which corresponds to the (111) diffraction plane. The optical absorption of nanocomposites depicted the presence of plasma peak related to silver (Ag) at 350 nm. The estimated energy gap from the optical absorption revealed a reduction in the Eg value from (3.97 eV) to (3.59 eV) with the presence of Ag atom. The Photolumincence (PL) peaks were observed at around 355 nm for pure LiNbO3/Si and 358, 360, 363, 371, 476 nm for different immersion durations respectively, in the visible region of the electromagnetic spectrum. The scanning electron microscopy (SEM) study illustrated that with increasing the immersion time, especially at 45 s, a change in the particle morphology was observed (LiNbO3 NRs structure). Atomic force microscopy (AFM) displayed that the surface roughness decreases from 80.71 nm for pure sample to 23.02 nm for the decorated sample as the immersion time is increased. FT-IR manifested a noticeable increase in the intensity of the peaks of samples decorated with AgNPs. Raman spectroscopy elucidated that the peaks shifted to higher intensity due to the plasmonic effect of Ag nanoparticles. Ag–LiNbO3/Si heterojunction nano-devices were fabricated successfully and enhanced the optoelectronic properties in comparison with the pure LiNbO3/Si heterojunction device.

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Section: Resultsmentioning

confidence: 89%

Section: Electrical Properties Of Linbo 3 / Si And...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Silver decorated lithium niobat nanostructure by UV activation method for silver–lithium niobate/silicon heterojunction device

Salim

Khalef

Fakhri

et al. 2023

Sci Rep

Self Cite

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“…The choice of synthesis method and processing conditions can be used to control the crystalline structure of In2O3 and tailor its properties for specific applications [9]. In2O3 can be easily synthesized using various methods, including sol-gel, hydrothermal, and coprecipitation method [10,11]. The material characteristics are heavily influenced by synthesis techniques corresponding to the process parameters of deposition [12,13] there are many techniques and procedures for producing a thin film [14,15]: chemical spray pyrolysis (CSP), chemical vapor deposition (CVD), sputtering technique, sol-gel method, thermal pyrolysis deposition (TPD), thermal evaporation in vacuum deposition.…”

Section: Introductionmentioning

confidence: 99%

Optical Investigation of In2O3/ Quartz Nano-films Deposited at Different Laser Energies

Dua’a R. T. Alrayyes,

Ali A. Alwahib,

Makram A. Fakhri

et al. 2024

IJNeaM

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The study conducted in this research focuses on the deposition of In2O3 thin films onto quartz substrates using the pulsed laser deposition technique (PLD). The importance of this study lies in the exploration of the optical properties of these thin films under varying laser energies (1200 mJ, 1400mJ, 1600mJ, 1800 mJ, and 2000 mJ), and the subsequent determination of their energy band gaps. In the pursuit of enhancing our understanding of In2O3 thin films, this research exhibits a direct relationship between the laser energy and laser band gap. It was discovered that the energy band gap of thin In2O3 films increased due to the increase in laser energy. This phenomenon resulted in an overall blue shift from the fundamental energy gap of In2O3 thin films. The significance of this study extends to potential applications in various fields. In2O3 thin films with tunable energy band gaps can find applications in optoelectronics, photovoltaic and other emerging technologies. This research not only contributes to the fundamental understandings of thin film properties but also offers a pathway for tailoring their characteristics for specific applications, thus advancing the field of materials science and engineering.

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“…Due to its simplicity, cost-effectiveness, one-step process, lack of catalyst requirements, high purity, and good control over the size and morphology of the nanoparticles, laser ablation of nanoparticles in a liquid medium is considered one of the most interesting and promising routes [40][41][42][43][44]. The properties of nanoparticles synthesised by laser ablation in liquid have been reported to be strongly dependent on the liquid type and laser parameters such as laser wavelength, pulse duration, and laser fluence [45][46][47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

Preparation of LiNbO₃ nanoparticles by green synthesis laser ablation in water

Alwazny,

Ismail,

Salim

2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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The use of LiNbO3 nanoparticles in nonlinear applications is attractive and promising. The particle size and morphology of LiNbO3 are the key parameters affecting their application. In this study, spherical nanoparticles of lithium niobate were synthesised by nanosecond Nd:YAG laser ablation in water. The polycrystalline, rhombohedral structure of the synthesised LiNbO3 nanoparticles with x-ray diffraction experiments was verified. The bandgap energy of colloidal LiNbO3 nanoparticles varied between 4.25 and 4.9 eV based on the laser fluence, according to the optical characteristics. The photoluminescence (PL) reveals that the emission peaks are centered at 293, 300, 305, and 309 nm for samples prepared at 1.3, 1.6, 2.0, and 2.2 J cm−2/pulse, respectively. The transmission electron microscope investigation confirmed the formation of spherical nanoparticles with an average size ranging from 18 to 34 nm. Raman studies on nanoparticles synthesised at various laser fluences are being conducted.

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Photo-activation of Ag chemicals for enhanced Nb2O5 optoelectronic device employing plasmonic effects

Cited by 19 publications

References 67 publications

Silver decorated lithium niobat nanostructure by UV activation method for silver–lithium niobate/silicon heterojunction device

Silver decorated lithium niobat nanostructure by UV activation method for silver–lithium niobate/silicon heterojunction device

Optical Investigation of In2O3/ Quartz Nano-films Deposited at Different Laser Energies

Preparation of LiNbO₃ nanoparticles by green synthesis laser ablation in water

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Photo-activation of Ag chemicals for enhanced Nb2O5 optoelectronic device employing plasmonic effects

Cited by 19 publications

References 67 publications

Silver decorated lithium niobat nanostructure by UV activation method for silver–lithium niobate/silicon heterojunction device

Silver decorated lithium niobat nanostructure by UV activation method for silver–lithium niobate/silicon heterojunction device

Optical Investigation of In2O3/ Quartz Nano-films Deposited at Different Laser Energies

Preparation of LiNbO3 nanoparticles by green synthesis laser ablation in water

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Preparation of LiNbO₃ nanoparticles by green synthesis laser ablation in water