Electrical conduction and dielectric relaxation in semiconductor SeSm<sub>0.005</sub>

Abdel-Wahab, F.A.; Maksoud, H M; Kotkata, M. F.

doi:10.1088/0022-3727/39/1/028

Cited by 48 publications

(8 citation statements)

References 25 publications

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“…The first region (I) lies in the range of 283-313 K, and region II covers the range of 193-283 K. The relation of the function σ = f (1/T ) shown in Fig. 7 satisfies the thermally activated conductivity formula [36][37][38] …”

Section: High Forward J -V Characteristicsmentioning

confidence: 99%

Fabrication and electrical characterization of thermally deposited amorphous Se0.82In0.18 on n-Si (100)

Kotkata

Mansour

2012

Appl. Phys. A

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Amorphous (a-) Se 0.82 In 0.18 thin films have been deposited onto n-type silicon (n-Si) single crystal, using the three-temperature technique, in the fabricated configuration of Au/a-Se 0.82 In 0.18 /n-Si/Al. The current densityvoltage (J -V ) characteristics have been measured at different isotherms in the range of 198-313 K, thus inspecting the conduction mechanisms comparing with Au/a-Se/nSi/Al heterojunctions. The analysis proved that the forward bias is characterized by two parts: current increasing exponentially with the applied voltage (low voltage bias region, V < 0.2 V), and non-exponentially in the higher voltage region (V > 0.2 V). At the low bias region, the current was dominated by a multi-tunneling capture-emission process with a rather temperature-independent effect in the temperature range investigated. However, at the high voltage region, the effect of temperature becomes more pronounced with an ohmic character in the range of 198 to 273 K. For temperatures higher than 273 K, and below the glass transition temperature of a-Se 0.82 In 0.18 (T g ∼ 330 K), the high voltage region could be subdivided into two parts: an ohmic conduction range that limited at bias voltage of 0.20 V < V < 0.46 V, and a space charge limited current region for bias voltage of V > 0.46 V. The reverse J -V characteristics showed a deviation from that of the ideal diode behavior, analogous to that of pure a-Se/n-Si heterojunctions.

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Section: High Forward J -V Characteristicsmentioning

confidence: 99%

Fabrication and electrical characterization of thermally deposited amorphous Se0.82In0.18 on n-Si (100)

Kotkata

Mansour

2012

Appl. Phys. A

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“…For materials with high dielectric constant, dielectric loss factor is usually applied to investigate the relaxation of molecules. [ 26 ] Figure 2h shows the relationship between dielectric loss factor and the frequency of different AM‐loading samples. PACMO dielectric gels exhibited the highest peak, and copolymerizing with AM effectively reduced the value of dielectric loss factor, revealing that higher polymer solid content and more aggregated AM phase could hinder the friction of FEC molecules and polymer chains.…”

Section: Resultsmentioning

confidence: 99%

Dielectric Gels with Microphase Separation for Wide‐Range and Self‐Damping Pressure Sensing

Zhang,

Wang,

Zhu

et al. 2023

Advanced Materials

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Omnipresent vibrations pose a significant challenge to flexible pressure sensors by inducing unstable output signals and curtailing their operational lifespan. Conventional soft sensing materials possess adequate elasticity but prove inadequate in countering vibrations. Moreover, the utilization of conventional highly‐damping materials for sensing is challenging due to their substantial hysteresis. To tackle this dilemma, dielectric gels with controlled in situ microphase separation have been developed, leveraging the miscibility disparity between copolymers and solvents. The resulting gels exhibit exceptional compression stress, remarkable dielectric constant, and exceptional damping capabilities. Furthermore, flexible pressure sensors based on these microphase‐separated gels show a wide detection range and low detection limit, more importantly, excellent sensing performance on vibrating surfaces. This work offers high potentials for applying flexible pressure sensors in complex practical scenarios and opens up new avenues for applications in soft electronics, biomimetic robots, and intelligent sensing.

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“…Despite the aforementioned technical challenges, DRS has still paved a way for a wide range of studies that concern the dielectric properties of solids, 135 fluids, 136 ceramics, 137 semiconductors, 138 polymers, 139 composites, 140 and nanomaterials. 141,142 In cases of PILs and ILs dissolved in polymers, DRS investigations provide detailed information regarding the dynamics of the species and the distribution of the dipole moment.…”

Section: Dielectric Relaxation Modes In Pilsmentioning

confidence: 99%

Polarization of ionic liquid and polymer and its implications for polymerized ionic liquids: An overview towards a new theory and simulation

Gao

Itliong

Kumar

et al. 2021

Journal of Polymer Science

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Ionic liquid (IL)‐containing polymers garner attention for electrochemical applications. This article overviews recent experimental and theoretical studies of polymer electrolytes that would be likely to cultivate new theoretical and computational frameworks for IL‐containing polymers. The first two sections outline the uniqueness of ILs that differentiates them from inorganic salts in polymers and explore deviation from the concept of the metaphor “room‐temperature molten salt.” Such distinct properties include (1) large intrinsic dipole moment and electronic polarizability, (2) hydrogen bonding, (3) π‐interactions, (4) a broad distribution of charges over the entire ion, and (5) the anisotropy of the ions. Moreover, the complexity of these properties substantially increases when the ions are polymerized. Indeed, their exceptional features would overcome the hurdle due to a trade‐off between ionic conductivity and mechanical robustness in inorganic salt‐doped polymers. Given these facts, the rest of the article focuses on emerging trends in the study of the dielectric response, phase separation, ion conductivity, and mechanical robustness of the polymer electrolytes, highlighting outstanding observations in experiments that may inspire existing theory and simulation. Our discussion also includes improving computational complexity for IL‐containing polymers. To this end, recent machine learning studies that consider ILs and polymer liquids are presented.

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Electrical conduction and dielectric relaxation in semiconductor SeSm_0.005

Cited by 48 publications

References 25 publications

Fabrication and electrical characterization of thermally deposited amorphous Se0.82In0.18 on n-Si (100)

Fabrication and electrical characterization of thermally deposited amorphous Se0.82In0.18 on n-Si (100)

Dielectric Gels with Microphase Separation for Wide‐Range and Self‐Damping Pressure Sensing

Polarization of ionic liquid and polymer and its implications for polymerized ionic liquids: An overview towards a new theory and simulation

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Electrical conduction and dielectric relaxation in semiconductor SeSm0.005

Cited by 48 publications

References 25 publications

Fabrication and electrical characterization of thermally deposited amorphous Se0.82In0.18 on n-Si (100)

Fabrication and electrical characterization of thermally deposited amorphous Se0.82In0.18 on n-Si (100)

Dielectric Gels with Microphase Separation for Wide‐Range and Self‐Damping Pressure Sensing

Polarization of ionic liquid and polymer and its implications for polymerized ionic liquids: An overview towards a new theory and simulation

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Electrical conduction and dielectric relaxation in semiconductor SeSm_0.005