Plasma treatment effect on SnO2–GO nano-heterojunction: fabrication, characterization and optoelectronic applications

Ahmed, Ala F.; Yaseen, Waleed Ibrahim; Abbas, Qusay Adnan; Mutlak, Falah A.-H.

doi:10.1007/s00339-021-04902-1

Cited by 28 publications

(3 citation statements)

References 42 publications

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“…Hz 1/2 /W at 450, 600, and 800 nm, respectively. A magnetic field must be present to maximize the photocurrent of the photodetector and reduce the electron-hole recombination produced by the generated high electric field region [45][46][47].…”

Section: Resultsmentioning

confidence: 99%

Two-Step Laser Ablation for the Synthesis of Au:Pb Core/Shell NPs for a High-Performance Silicon-Based Heterojunction Photodetector

Abdul Hameed,

Mutlak

2024

IJP

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In this work, colloidal gold:lead (Au:Pb) core/shell nanoparticles (NPs) were synthesized in liquid at 532 nm using the laser ablation method. An investigation of the external magnetic field during the laser ablation process affected the properties of the Au:Pb NP core and shell. The magnetic field enhances the core shell’s crystallinity. The optical band gap energy increased from 2.067 to 2.086 eV in the presence of the magnetic field. It also led to an increase in the concentration and a decrease in the size of nanoparticles, which led to increased absorbance. A magnetic field strength of 250 mT resulted in a higher removal efficiency. The external magnetic field significantly reduced NP agglomeration and aggregation. We created and characterized an Au:Pb/porous silicon (PS) heterojunction photodetector. The magnetic field greatly enhanced its properties. The responsively (Rλ) of the photodetector increased from 0.093 to 0.551 A/W at λ = 650 nm by increasing the magnetic field. On the other hand, the final Au:Pb/PS material had the best photocurrent stability, demonstrating that adding Au:Pb NPs can make PS's opto-electrical properties more stable. In the end, the Au:Pb NPs/PS heterojunction photodetector results showed that the photodetector parameters got much better when a magnetic field was present. By altering the preparation conditions, we can produce high-performance core/shell photovoltaic devices.

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Section: Resultsmentioning

confidence: 99%

Two-Step Laser Ablation for the Synthesis of Au:Pb Core/Shell NPs for a High-Performance Silicon-Based Heterojunction Photodetector

Abdul Hameed,

Mutlak

2024

IJP

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“…Plasma is a neutral gas composed of neutral and charged particles, such as the upper atmosphere, interstellar matter, and the Earth's ionosphere [1,2]. There are many applications of plasma like solar cells, photodetectors, optoelectronic devices and biomedical device [3][4][5]. The electron transport coefficients were calculated and rate coefficients were used in fluid models of gas discharges from collision cross-section data by achieving equation of Boltzmann with BOLSIG+ (program) [6].…”

Section: Introductionmentioning

confidence: 99%

Determination of the Mathematical Model for Plasma Electronic Coefficients of the Earth's Ionosphere

Temur

Ahmed

Ali

2023

Iraqi Journal of Science

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In this research, electron coefficients such as total collision frequency (colt/N), total ionization frequency (viz/N), and Power (P/N) for different gases such as (Ar, He, N2 and O2 (in Earth’s ionosphere have been calculated by applying the Boltzmann equation utilizing BOLSIG +, and it has been discovered that there is a significant impact of reducing the electric field (E/N) on electronic coefficients under which (E/N) increases. In addition, influence of (E/N) on electronic coefficients was studied. Reducing the electric field was chosen in the restricted range (1-100) Td, and the electronic coefficients for gases in the limited range (50-2000) km of the Earth's ionosphere. A positive correlation has been explained between all the plasma electronic coefficients and (E/N) for the four gases. It was found that He gas has higher electronic coefficients than other gases in the Earth's ionosphere because they have lower electron binding energy.

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“…Still, the free-standing electrode shows unsatisfactory charge storage abilities, such as low capacitance and determined conductivity during the charge storage process [ 13 , 14 , 15 , 16 ]. So far, metal oxide (V 2 O 5 , Co 3 O 4 , SnO 2 , MnO 2 , CdO, and Fe 2 O 3 )/GO [ 8 , 17 , 18 , 19 , 20 , 21 ] composites have been researched and reported to solve the stability of active electrodes and hydrophilicity-related drawbacks. Meanwhile, metal sulfides (FeS 2 , NiCo 2 S 4 , VS 2 , SnS 2 , WS 2 , MoS 2 , NiS, Ni 3 S 2 , CuS, and ZnS) [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ] are also promising active materials for supercapacitors due to their high conductivity, suitable redox activities owing to multiple oxidation states, semiconducting behavior, and lower electronegativity.…”

Section: Introductionmentioning

confidence: 99%

A New CuSe-TiO2-GO Ternary Nanocomposite: Realizing a High Capacitance and Voltage for an Advanced Hybrid Supercapacitor

et al. 2022

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A high capacitance and widened voltage frames for an aqueous supercapacitor system are challenging to realize simultaneously in an aqueous medium. The severe water splitting seriously restricts the narrow voltage of the aqueous electrolyte beyond 2 V. To overcome this limitation, herein, we proposed the facile wet-chemical synthesis of a new CuSe-TiO2-GO ternary nanocomposite for hybrid supercapacitors, thus boosting the specific energy up to some maximum extent. The capacitive charge storage mechanism of the CuSe-TiO2-GO ternary nanocomposite electrode was tested in an aqueous solution with 3 M KOH as the electrolyte in a three-cell mode assembly. The voltammogram analysis manifests good reversibility and a remarkable capacitive response at various currents and sweep rates, with a durable rate capability. At the same time, the discharge/charge platforms realize the most significant capacitance and a capacity of 920 F/g (153 mAh/g), supported by the impedance analysis with minimal resistances, ensuring the supply of electrolyte ion diffusion to the active host electrode interface. The built 2 V CuSe-TiO2-GO||AC-GO||KOH hybrid supercapacitor accomplished a significant capacitance of 175 F/g, high specific energy of 36 Wh/kg, superior specific power of 4781 W/kg, and extraordinary stability of 91.3% retention relative to the stable cycling performance. These merits pave a new way to build other ternary nanocomposites to achieve superior performance for energy storage devices.

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Plasma treatment effect on SnO2–GO nano-heterojunction: fabrication, characterization and optoelectronic applications

Cited by 28 publications

References 42 publications

Two-Step Laser Ablation for the Synthesis of Au:Pb Core/Shell NPs for a High-Performance Silicon-Based Heterojunction Photodetector

Two-Step Laser Ablation for the Synthesis of Au:Pb Core/Shell NPs for a High-Performance Silicon-Based Heterojunction Photodetector

Determination of the Mathematical Model for Plasma Electronic Coefficients of the Earth's Ionosphere

A New CuSe-TiO2-GO Ternary Nanocomposite: Realizing a High Capacitance and Voltage for an Advanced Hybrid Supercapacitor

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