Mohammed A. Ibrahem

ORCID: 0000-0002-6637-5257
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About
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Research Areas
  • Conducting polymers and applications
  • Organic Electronics and Photovoltaics
  • Quantum Dots Synthesis And Properties
  • Silicon Nanostructures and Photoluminescence
  • ZnO doping and properties
  • Perovskite Materials and Applications
  • Photochemistry and Electron Transfer Studies
  • Chalcogenide Semiconductor Thin Films
  • Gas Sensing Nanomaterials and Sensors
  • Nanowire Synthesis and Applications
  • Nonlinear Optical Materials Research
  • Supercapacitor Materials and Fabrication
  • Nonlinear Optical Materials Studies
  • Advanced Sensor and Energy Harvesting Materials
  • Copper-based nanomaterials and applications
  • Ga2O3 and related materials
  • Photochromic and Fluorescence Chemistry
  • Structural and Chemical Analysis of Organic and Inorganic Compounds
  • Chemical and Physical Properties of Materials
  • Advancements in Battery Materials
  • Laser Material Processing Techniques
  • Molecular Junctions and Nanostructures
  • Photonic and Optical Devices
  • Synthesis and biological activity
  • Laser-Ablation Synthesis of Nanoparticles

University of Duhok
2014-2024

Imam Mohammad ibn Saud Islamic University
2016-2023

University of Technology - Iraq
2012-2021

Al-Neelain University
2018

Center for NanoScience
2014

Academia Sinica
2012-2014

Research Center for Applied Science, Academia Sinica
2012-2014

National Taiwan University
2012-2014

We proposed a facile film treatment with formic acid to enhance the conductivity of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) by 4 orders magnitude. The effect concentration on was investigated; increased fast increasing up 10 M and then slightly, highest being 2050 S cm–1 using 26 concentration. Formic treated PEDOT:PSS films also exhibited very high transmittances. mechanism enhancement explored through SEM, AFM, XPS. its dielectric constant screens charge...

10.1021/am405024d article EN ACS Applied Materials & Interfaces 2014-01-24

Low-cost and large-area electronic applications require the deposition of active materials in simple inexpensive techniques at room temperature; properties usually associated with polymer films. In this study, we demonstrate a simple, low-cost environmentally friendly method for high-yield production two dimensional nanosheets semiconducting transition metal disulfides, integrated route towards solution-processed MoS2 WS2 thin The resulting high purity no contamination or distortion their...

10.1039/c3ra41744a article EN RSC Advances 2013-01-01

One-step direct conversion of bulk MoO<sub>3</sub> to nanorods displayed significantly enhanced lithium-ion storage properties with higher reversible capacities.

10.1039/c4nr00692e article EN Nanoscale 2014-01-01

In this paper we report a simple and effective approach towards improving the performance of molecular bulk heterojunction (BHJ) photovoltaics through incorporation new, nonvolatile processing additive; (3-chloropropyl)trimethoxysilane (CP3MS). A small amount additive CP3MS combined with post-annealing treatment significantly enhanced power conversion efficiency (PCE) dialkylated diketopyrrolopyrrole chromophore (SMDPPEH)-based BHJ solar cells. The PCE increased from 2.75% for device...

10.1039/c3ra46884d article EN RSC Advances 2013-12-09

In this study, oxidation polymerization was used to synthesize poly(3-hexylthiophene) (P3HT)-modified TiO2 nanoparticles (NPs) and then the effect of interface between NPs P3HT coating on system's photocatalytic ability under visible light investigated. The properties were enhanced from UV after incorporation P3HT. Moreover, charge transfer promoted when a self-assembled monolayer (SAM) 2-thiophenecarboxylic acid present at their interface; SAM decreased barrier for coating, leading improved...

10.1039/c3ra43393e article EN RSC Advances 2013-01-01

Recently, the efficient preparation techniques of zinc sulfide (ZnS) nanostructured films have drawn great attention due to their potential applications in optoelectronics. In this study, low-cost and high-yield chemical bath deposition (CBD) technique was used deposit ZnS thin films. The effect various parameters such as time, pH, precursor concentration, temperature on morphology energy bandgap (Eg) prepared were investigated. characterization revealed formation polycrystalline with...

10.3390/coatings11091131 article EN Coatings 2021-09-17

This paper comprises the synthesis and characterization of 3-(4-(dimethylamino)phenyl)-1-phenyl-(2E)propen-1-one (DMAPPP) its application as a new laser medium.The absorption fluorescence spectra DMAPPP under different solvents concentrations have been investigated.The amplified spontaneous emission performance various concentrations, organic pump pulse energies Nd:YAG (355 nm) was also studied.The in solution were compared with conventional dye coumarin 503, same identical conditions.The...

10.12693/aphyspola.133.121 article EN Acta Physica Polonica A 2018-01-01

Abstract In this study, an air‐stable bulk heterojunction organic solar cell demonstrated by utilization of titanium oxide (TiO 2 ) nanoparticles as a hole blocking layer was prepared through high‐energy grinding method. The large clumps the anatase TiO underwent deaggregation to form stable dispersed solution during process. resultant suspension can uniform and smooth film spin coating on various substrates. Because substantial oxygen water protection effect thin film, cells exhibit...

10.1002/pip.2522 article EN Progress in Photovoltaics Research and Applications 2014-06-06

Zinc sulfide (ZnS) nanostructure thin films were deposited on bare soda-lime glass substrates utilizing the technique of chemical bath deposition (CBD) at 65±2˚C then annealed various temperatures in air. The effect post-annealing growth, structure, morphology, and optical properties was investigated by using X-ray diffraction, Field Emission Scanning Electron Microscope (FESEM), UV-Visible spectrophotometer respectively. XRD analyses confirm wurtzite hexagonal structure ZnS films. Raising...

10.1063/5.0109757 article EN AIP conference proceedings 2022-01-01

Piezoelectric nanogenerators (NGs) hold immense promise as self-powered devices for harvesting mechanical energy from the environment. This study introduces an efficient and scalable synthesis method zinc oxide (ZnO) nanorods, a pivotal material in piezoelectric (NGs), with several key results. A Chemical Bath Deposition technique is employed, optimizing parameters such growth time, temperature, precursor concentrations to achieve well-aligned high-quality ZnO nanorods. The structural...

10.25271/sjuoz.2024.12.1.1205 article EN cc-by-nc-sa Science Journal of University of Zakho 2024-02-04

Carbon Nanoparticles CNPs have been produced using pulsed laser ablation of a graphite target in DI water. Microstructural characterization and optical properties the were carried out X-ray Diffraction (XRD), Transmission electron microscopy (TEM), UV-VIS, photoluminescence (PL) spectroscopy. TEM investigation showed that having spherical shape with some aggregations nanoparticles. The XRD results confirm crystalline structure carbon nanoparticles hexagonal phase along (100) plane....

10.1063/5.0066034 article EN AIP conference proceedings 2021-01-01

This study describes the modification of Porous silicon (PS) by depositing commercial Ag powder on its surface and within pores to improve physical properties performance as a NIR photodetector. The incorporation Ag-nanoparticles (Ag-NPs) into PS structure increases energy band gap from 1.74 eV 2.46 decreases diffuse reflectance over broad range wavelengths. Afterward, photodetectors both structures are produced. maximum current is measured at 850 nm for photodetectors. In addition...

10.2139/ssrn.4568182 preprint EN 2023-01-01
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