Ac conductivity and impedance spectroscopy study and dielectric response of MgPc/GaAs organic heterojunction for solar energy application

Benhaliliba, M.; Asar, T.; Missoum, I.; Ocak, Yusuf Selim; Özçelik, Süleyman; Benouis, C.E.; Arrar, A.

doi:10.1016/j.physb.2019.411782

Cited by 12 publications

(4 citation statements)

References 35 publications

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“…where e is the electron's charge, 𝜀 is the vacuum's permittivity, N is the free charge carrier concentration and m* is the charge carrier effective mass. Dielectric constant  is given by [10];…”

Section: A Optical and Dispersion Propertiesmentioning

confidence: 99%

Optical and Electrical properties of organic Aluminum phthalocyanine based thin films for organic electronics.

Benhaliliba

2024

UTJsci

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Thought this research, the optical and electrical properties of organic aluminum phthalocyanine (AlPc) molecule based thin film are emphasized. The transmittance of such materials presents a narrow peak and valley within a range of 446 nm. Dielectric parameters like refractive and extinction coefficient are studied within Uv-vis-IR range. Optical band gap and Urbach energy are determined found to be 2.6 eV and 33 meV. Based on single oscillator, dispersion energy and related parameters like E0, Ed, S0, l0, n0, epsil,

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Section: A Optical and Dispersion Propertiesmentioning

confidence: 99%

Optical and Electrical properties of organic Aluminum phthalocyanine based thin films for organic electronics.

Benhaliliba

2024

UTJsci

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“…The ε1 value is the capacity of energy storage, which can be regarded as a gauge of the polarization of the prepared material. According to the estimated dielectric constant and determined loss tangent, the dielectric loss (ε2) was determined using the equation [35,36]:…”

Section: Dielectric Response Of Erythrosine B /Pva Polymeric Composit...mentioning

confidence: 99%

Investigations on the physical characteristics, electrical conductivity, and dielectric properties of erythrosine B and polyvinyl alcohol composited films

El-Zaidia,

Ali,

Darwish

et al. 2024

Preprint

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Erythrosine B/PVA polymeric composite films were prepared with different concentrations of Erythrosine B (EB). The crystal structure of Erythrosine B /PVA films was identified by X-ray diffraction patterns (XRD). The frequency (100 Hz - 1 MHz) reliance on both dielectric constant (ε1) and dielectric loss (ε2) was investigated. Both ε1 and ε2 of Erythrosine B/PVA polymeric composite films decreased with increasing frequency and increased by rising percent EB wt%. The ac conductivity of erythrosine B/PVA films showed increased behavior by raising both frequency and temperature. Moreover, frequency exponent (s) values were calculated and then discussed according to the CBH system, which is the fundamental model. Values of the maximum barrier height (WM) and ac Activation energy (∆Eac) were calculated for the different concentrations of wt% EB in investigated films. ∆Eac decreased from 95 to 17 meV for 1wt% EB and 4 wt% EB, respectively.

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“…Complex Impedance Spectroscopy (CIS) is widely used for device equivalent circuit analysis. A few solid state devices based on incorporation of a variety of inorganic and organic components, such as Al/CuPc-CdS/Ag [37], Al/ PVA-ZnO/p-Si [38], MPAC-graphene/p-Si thin-film [39], PVA-coumarin/ITO diode [40], Al/Al 2 O 3 /PVA:n-ZnSe [41], Ag/MgPc/GaAs/AuGe [42], Au/P 3 MeT/Pt [43,44] and PEDOT-FWCNT nanocomposites [45] optoelectronic devices were reported. In the present work, CIS analysis of solid-state Cu/AgNPs-PVA/Cu heterojunction Schottky barrier in frequency range from 100 Hz to 100 kHz, under ac voltage amplitude of 100 mV at room temperature was performed.…”

Section: Impedance Spectroscopymentioning

confidence: 99%

Electrical characteristics of (AgNPs-PVA)-based Schottky diode and its application as a low-voltage varistor devices

Khalil¹

2022

Phys. Scr.

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In this report, we studied the influence of silver nanoparticles (AgNPs) on the electrical conductivity of Polyvinyl Alcohol (PVA) as a semiconductor nanocomposites active layer. Here, the Schottky junction is constructed by mechanically pressing a copper (Cu) electrode onto a AgNPs-PVA nanocomposite, which shows rectification behavior at room temperature. The synthesis of silver nanoparticles (AgNPs) was achieved by the physical reduction of silver nitrate using an ultraviolet lamp. The nanocomposite films were created using a casting technique. An ultraviolet spectrophotometer (UV-Vis), which displayed maximum absorbance at 430 nm, was used to confirm the synthesis of AgNPs and carry out the optical band gap. The charge carrier transport properties of AgNPs-PVA film were investigated by using impedance spectroscopy and I–V measurements. Then, AC impedance analysis was used to determine grain and grain boundary resistances; current-voltage analysis enabled the barrier height () to be determined. Moreover, the metal/semiconductor (Cu/AgNPs-PVA) Schottky barrier was confirmed as an equivalent circuit model via the Nyquist plot. Based on thermoionic emission theory, the characteristic I–V induced rectifying Schottky behavior can be understood. Moreover, the AgNPs-PVA nanocomposite exhibited hysteresis behavior under multiple repetitive measurements. For low voltage varistor devices, the nonlinear behavior may be completely utilized.

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Ac conductivity and impedance spectroscopy study and dielectric response of MgPc/GaAs organic heterojunction for solar energy application

Cited by 12 publications

References 35 publications

Optical and Electrical properties of organic Aluminum phthalocyanine based thin films for organic electronics.

Optical and Electrical properties of organic Aluminum phthalocyanine based thin films for organic electronics.

Investigations on the physical characteristics, electrical conductivity, and dielectric properties of erythrosine B and polyvinyl alcohol composited films

Electrical characteristics of (AgNPs-PVA)-based Schottky diode and its application as a low-voltage varistor devices

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