Voltage dependent Maxwell-Wagner polarization in dielectric heterostructures
| Autor: | R Karthik, Vijetha Tummala |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Field (physics) Heterojunction 02 engineering and technology Dielectric Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Stack (abstract data type) 0103 physical sciences 0210 nano-technology Polarization (electrochemistry) Quantum tunnelling Voltage |
| Zdroj: | Materials Today: Proceedings. 4:8751-8757 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2017.07.224 |
| Popis: | This paper presents a model for capacitance – voltage characteristics of bilayer metal insulator metal capacitors. The proposed model accounts for Ionic, Orientation and Maxwell-Wagner polarization mechanisms. It is observed that the effective dielectric constant of stack is increased due to the accumulation of charges at the interface of high to low conductance materials due to the applied field. The proposed model for capacitance – voltage characteristics shows a good agreement with experimental results by introducing carrier tunneling probability of dielectric stack. It is observed that the Maxwell Wagner polarization is dominant at low frequencies ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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