Fabrication of Alq3/PMMA nanocomposite sheet and its potential applications as radiation dosimeter

Abdullahi, Shittu; Aydarous, Abdulkadir; Salah, Numan

doi:10.1016/j.jlumin.2021.118588

Cited by 13 publications

(7 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As illustrated in figure 1(a), the pattern of Alq 3 exhibited numerous diffraction peaks with a well-defined sharp intensity at 2θ = 10.50°. This dominant peak was indexed to the pure phase of polymorphs Alq 3 crystal phase according to the standard card (JCPDS 26-1550) [13,14]. The XRD diffraction of hybrid Alq 3 /CNTs is relatively different in which the intensity of the diffraction peaks was decreased by doping concentrations suggesting the small crystalline size.…”

Section: Microstructure Analysismentioning

confidence: 99%

Synthesis of Alq₃ by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Siddiq

2023

Mater. Res. Express

View full text Add to dashboard Cite

The global demand for renewable energy as an alternative to traditional fossil fuels has motivated the scientific community to develop highly efficient nanocomposite materials that can be used for enhancement to optoelectronic technology. In the present work, organometallics Alq3 and Alq3/CNTs were prepared by cost-effective chemical route. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were performed to identify the structural and morphological features. The hybrid Alq3/CNTs exhibited polycrystalline structure with a large surface area. The optical band gap (E_g) of Alq3 film was evaluated within the visible spectrum in the range of 3.047 eV which reduced to 2.979 eV by CNTs integration. Ag/Alq3/p-Si/Al and Ag/Alq3/CNTs/p-Si/Al photodiodes were fabricated using thermal evaporating technique. Current-voltage (I-V) and capacitance/conductance-voltage (C/G-V) were measured to analyze the photodiode behavior. The main electronic parameters like R_s,n,ϕ_b 〖and I〗_o were determined using different models indicating that the composite photodiode of high performance in which R_s was decreased whereas N_a was increased with doping. Besides, the photocurrent sensitivity was increased from 1.45×〖10〗^(-8) A to 1.1 ×〖10〗^(-5) A due to increase of free charge carriers.

show abstract

Section: Microstructure Analysismentioning

confidence: 99%

Synthesis of Alq₃ by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Siddiq

2023

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…In general, Mq 3 molecules have the ability to interact with a wide range of materials comprising metals, metal oxide nanoparticles (NPs), and carbonaceous materials, carbon nanotubes (CNTs), graphene, and graphene oxide (GO). Therefore, integration of the Alq 3 framework with different nanomaterials will produce new composites with promising characteristics that combine inorganic–organic ligands. , In this context, Sharma et al have studied the influence of the DCJTB organic dye on the electronic and spectroscopic features of Alq 3 for modifying OLEDs’ behavior . Furthermore, rare earth metal oxide semiconductors (REMOSs) such as cerium oxide (CeO 2 ), lanthanum(III) oxide (la 2 O 3 ), lutetium(III) oxide (Lu 2 O 3 ), and yttrium(III) oxide (Y 2 O 3 ) have displayed great importance in numerous technological applications thanks to their photostability, redox capabilities, and electromagnetic aspects .…”

Section: Introductionmentioning

confidence: 99%

Impact of Y₂O₃ Nanosheets on the Microstructural Characteristics of Alq₃ Prepared via the Co-precipitation Route for Enhancement of Photodiode Performance

Siddiq,

Sopaih,

Elgazzar

2023

ACS Omega

View full text Add to dashboard Cite

In the present study, tris-(8-hydroxyquinoline) aluminum (Alq 3 ) and tris-(8hydroxyquinoline) aluminum/yttrium oxide Alq 3 /Y 2 O 3 were synthesized by a facile chemical route. The crystal structure, surface morphological nature, and particle size were identified by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) micrographs. Ag/Alq 3 /p-Si/Al and Ag/Alq 3 :Y 2 O 3 /p-Si/Al diodes were fabricated by the thermal evaporation technique and the electrical characteristics were evaluated from the I−V plots in dark and under illumination intensity. Thermionic emission theory, Cheung−Cheung, and Nord model have been applied to define the main electronic parameters like series resistance (R s ), barrier height (ϕ b ), and ideality factor (n). The hybrid Ag/Alq 3 :Y 2 O 3 /p-Si/Al diode revealed a nonideal behavior with high shunt resistance R sh and good photocurrent sensitivity. The C/G−V analysis indicated that both C and G are strongly affected by the presence of trapped charge carriers at the interface states. The obtained results indicated that R s was decreased whereas the carrier concentration (N a ) was increased by loading Y 2 O 3 nanosheets.

show abstract

“…[1][2][3] It exhibits excellent transparency, substantial impact resistance, good tensile strength, high resistance to atmospheric effects, and electrical resistance compared to other polymers. 4,5 Due to these properties, PMMA is applicable in nuclear, medical, engineering, and optics fields. 4,[6][7][8][9] Moreover, it is relatively inexpensive and easily fabricated and formed.…”

Section: Introductionmentioning

confidence: 99%

Physical properties of zircon‐filled poly(methyl methacrylate) composites following heating around its glass transition temperature

Hilmi

Sari

Asrori

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Zircon‐filled poly(methyl methacrylate) (PMMA) composites were synthesized, and their physical properties after ambient heat treatments were investigated. The sub‐micron zircon filler was obtained by purifying local zircon sand. The heat treatments were at 25°C (untreated), 55°C, and 70°C, around the glass transition temperature of PMMA. The crystal and molecular structures of the samples were investigated using X‐ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The thermomechanical, optical, and thermal (between RT and 550°C) properties of all composites were examined using dynamic mechanical analysis (DMA), UV–Vis spectroscopy, and differential thermal/thermogravimetric analysis (DT/TGA) instruments. XRD patterns showed that there were no crystal structure changes. FTIR peaks were reduced due to the heat treatment indicating the presence of PMMA molecular degradation in the heat‐treated samples. Meanwhile, DMA data showed that the heat‐treated samples exhibit a much lower room temperature storage modulus, that is, up to half as compared to the untreated ones. Furthermore, the heat treatment also affects the optical properties, including a slight drop of transmittance in UV‐A and visible regions but a slight increase of transmittance in UV‐B and UV‐C regions. Finally, the differential scanning calorimetry/thermogravimetry (DSC/TG) data show that the heat‐treated pure PMMAs become more challenging to undergo thermal degradation (i.e., mass drop).

show abstract

Fabrication of Alq3/PMMA nanocomposite sheet and its potential applications as radiation dosimeter

Cited by 13 publications

References 42 publications

Synthesis of Alq₃ by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Synthesis of Alq₃ by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Impact of Y₂O₃ Nanosheets on the Microstructural Characteristics of Alq₃ Prepared via the Co-precipitation Route for Enhancement of Photodiode Performance

Physical properties of zircon‐filled poly(methyl methacrylate) composites following heating around its glass transition temperature

Contact Info

Product

Resources

About

Fabrication of Alq3/PMMA nanocomposite sheet and its potential applications as radiation dosimeter

Cited by 13 publications

References 42 publications

Synthesis of Alq3 by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Synthesis of Alq3 by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Impact of Y2O3 Nanosheets on the Microstructural Characteristics of Alq3 Prepared via the Co-precipitation Route for Enhancement of Photodiode Performance

Physical properties of zircon‐filled poly(methyl methacrylate) composites following heating around its glass transition temperature

Contact Info

Product

Resources

About

Synthesis of Alq₃ by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Synthesis of Alq₃ by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Impact of Y₂O₃ Nanosheets on the Microstructural Characteristics of Alq₃ Prepared via the Co-precipitation Route for Enhancement of Photodiode Performance