Investigations on structural and electrical properties of polyaniline–cadmium sulfide nanocomposite films for solid state electronics

Khasim, Syed; Lakshmi, Mohana; Johani, Hind‐Al‐; Badi, N.; Roy, Aashis S.

doi:10.1002/pc.24895

Cited by 5 publications

(4 citation statements)

References 45 publications

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“…40 Another point concluded from the nanocomposites' FESEM images is that when CdS increases the nanostructure agglomeration reduces and the size of the nanocomposite's nanotube network changes, which can help PANI to easily transfer the electrons to CdS. 45,46 Figure 4h shows the EDS spectrum of PANI/CdS nanocomposite and the elements' atomic and weight percents are listed in a table inside it. These figures and the EDS analyses conclude that the PANI/CdS hybrid nanocomposite has been successfully synthesized with no impurities.…”

Section: Morphological Study Of Pani/cdsmentioning

confidence: 99%

Synthesis of Polyaniline/Cadmium Sulfide Hybrid Nanocomposites via a One-Pot Process: Morphology Control for Improvement of Photovoltaic Performance

Jarrahi

Farzi

Fischer

2023

ACS Appl. Electron. Mater.

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In this work, the one-pot process was employed to synthesize polyaniline/cadmium sulfide hybrid nanocomposite. Herein, for the first time, we report a comprehensive study from the synthesis of the raw materials to the photovoltaic cell performance investigation including the synthesis of the polyaniline/cadmium sulfide hybrid nanocomposite through a one-pot process, a morphology study, the fabrication of a hybrid organic/inorganic solar cell, and the evaluation of the cell performance. To this end, the CdS-to-PANI weight ratio was considered as a key parameter, and 0, 2.5, 5, 10, 15, 20, and 40% were used as the CdS values. FTIR, XRD, and FESEM analyses confirmed that the presence of CdS in the PANI nanotubular network affected the morphology of the hybrid nanocomposite, and changing the CdS-to-PANI ratio tuned the nanotubular network morphology from coarse to fine. UV–visible absorption spectrum studies validated the reduction of PANI bandgap due to the presence of CdS. Likewise, the conductivity of the nanocomposites was also improved compared to neat PANI due to the increasing of charge density. These controlled-morphology nanocomposites were used for organic/inorganic hybrid solar cells based on the configuration of the FTO/ZnO/CdS@PANI/Ag device, and the morphology effects on their performance were investigated. When CdS was incorporated in the PANI nanotubular network, J SC and efficiency increased by, respectively, 4.471 mA·cm–1 and 1.87%. This means a 22-fold increase in J SC and a 1700-fold increase in the solar cell based on 20%CdS@PANI compared to those in the solar cell made with pure PANI. In short, by using the one-pot process, it is possible to hierarchically ensure better control of the morphology of organic and inorganic components, increasing the light absorption edge, reducing the bandgap, and improving the photovoltaic performance of CdS@PANI organic–inorganic hybrid nanocomposites.

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Section: Morphological Study Of Pani/cdsmentioning

confidence: 99%

Synthesis of Polyaniline/Cadmium Sulfide Hybrid Nanocomposites via a One-Pot Process: Morphology Control for Improvement of Photovoltaic Performance

Jarrahi

Farzi

Fischer

2023

ACS Appl. Electron. Mater.

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“…The thermal curling influences the arrangement of polymer chains in the network and as a result the conjugation length is expected to increase, which subsequently results in improved conductivity. Also, the rearrangement of molecules upon heating makes them favorable for electron delocalization in the lattice [23]. The clusters formed due to the inclusion of Gr of different weight percentages pave a path for the formation of polarons and bipolarons and at higher temperatures, these charge carriers get assistance for hopping from thermal stimulation as per variable range hopping (VRH) theory.…”

Section: Transport Propertiesmentioning

confidence: 99%

Synthesis, characterization and Hall-effect studies of highly conductive polyaniline/graphene nanocomposites

Rajyalakshmi

Pasha²,

Khasim

et al. 2020

SN Appl. Sci.

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The objective of this research is to prepare a series of conducting polyaniline/graphene composites by in situ chemical oxidative method through polymerization of aniline in the existence of graphene of various weight percentages. The prepared composites were examined through Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy respectively. The conductivity and dielectric attributes exhibited composition dependent percolation behavior with enhanced properties for 15 wt% of graphene in polyaniline matrix. The Hall-effect studies were performed in the prepared composites and the investigations confirm that the composites behave as n-type semiconductors. From the data obtained one can envisage remarkable improvement in the charge transport and dielectric properties of the composite at the percolation threshold due to the presence of nano-size additive in the composite. The temperature dependent conductivity in doped composites was increased by five fold in compare to pure PANI. The doping of graphene in PANI matrix, the improved dielectric parameters were achieved. The Hall effect studies were carried out in the prepared composites, the results shows that composites behaves like a n-type semiconductor. Further, the mechanical properties such as tensile stress and tensile strain were carried out in the prepared composites.

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“…The problem of poor processability has been addressed up to a certain extent by mixing PANI with a reactive functional group containing polymers or fillers. Additionally, the electrical conductivity, thermal properties, optical properties and gas sensing properties can be improvised by filling inorganic nanomaterial into the polymer matrix …”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the electrical conductivity, thermal properties, optical properties and gas sensing properties can be improvised by filling inorganic nanomaterial into the polymer matrix. [10][11][12] The crucial parameters influencing the reinforced polymer nanocomposites are size, shape, concentration, and spatial distribution of the reinforcing agent and thermal stability of the fillers. Commonly used inorganic nano-fillers for the reinforcement of conducting polymers are mainly metal oxides and metal sulfides.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, gas sensing, and electrical property evaluation of polyaniline/copper‐alumina nanocomposites

2019

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A series of organic‐inorganic hybrid of polyaniline (PANI)/copper‐alumina (Cu‐Al2O3) nanocomposites were prepared by in situ polymerization technique. The structural, morphological and thermal properties of PANI with different contents of nano Cu‐Al2O3 were characterized by Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction analysis (XRD), scanning electron microscopy (SEM), high‐resolution transmission electron microscope (HR‐TEM), differential scanning calorimetry (DSC), and thermogravimteric analysis. The dielectric constant, dielectric loss and the AC conductivity were measured using a dielectric analyzer in a frequency ranging from 100 Hz to 1 MHz. Also, current (I)‐voltage (V) characteristics and gas sensing performance of the composites were studied in detail. The FTIR spectra of composite exhibited the IR band of nanoparticles in the macromolecular chain of PANI. The XRD pattern showed the systematic arrangement of Cu‐Al2O3 particles in the molecular structure of polyaniline. The SEM and TEM images indicated that the nanoparticles were sheathed by polyaniline. DSC results showed that incorporation of Cu‐Al2O3 accelerated the glass transition temperature of PANI. TG analysis demonstrated the enhancement in thermal stability of PANI/Cu‐Al2O3 nanocomposite relative to the base polymer. Conductivity studies showed that both AC and DC conductivity, dielectric constant, and dielectric loss increased with increase in the concentration of nanoparticles up to 5 wt%. Similarly, the ammonia gas sensing behavior of nanocomposites was also improved by the addition of Cu‐Al2O3 nanoparticles.

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Investigations on structural and electrical properties of polyaniline–cadmium sulfide nanocomposite films for solid state electronics

Cited by 5 publications

References 45 publications

Synthesis of Polyaniline/Cadmium Sulfide Hybrid Nanocomposites via a One-Pot Process: Morphology Control for Improvement of Photovoltaic Performance

Synthesis of Polyaniline/Cadmium Sulfide Hybrid Nanocomposites via a One-Pot Process: Morphology Control for Improvement of Photovoltaic Performance

Synthesis, characterization and Hall-effect studies of highly conductive polyaniline/graphene nanocomposites

Synthesis, characterization, gas sensing, and electrical property evaluation of polyaniline/copper‐alumina nanocomposites

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