Giant dielectric constant capacitor and fabrication method thereof

Abstract

The invention relates to a giant dielectric constant capacitor. The giant dielectric constant capacitor comprises an upper layer, an intermediate layer and a lower layer, wherein the upper layer and the lower layer both are insulators, and the intermediate layer is a semiconductor. In the giant dielectric constant capacitor, the exterior, namely the upper layer and the lower layer, of the giant dielectric constant capacitor are arranged to be the insulators, the intermediate layer is arranged to be semiconductor, the semiconductor has relatively many carriers and space charges, positive charges and negative charges are separated under an effect of an externally-applied electric field and are accumulated at one side, near to the semiconductor, of each of the insulators on the upper surfaceand the lower surface to form polarization, so that the effect of forming a relatively large dielectric constant is achieved; and moreover, the accumulated charges are limited under the insulators rather than participate in an external circuit to form a current, and the effect of small electric leakage loss is achieved.

Description

technical field [0001] The invention relates to a giant dielectric constant capacitor and a preparation method thereof, belonging to the field of semiconductor giant dielectric constant capacitors. Background technique [0002] Due to the demand for size miniaturization and high energy storage density, giant dielectric constant materials have always been a hot spot in the research of modern giant dielectric constant capacitors, filters and other electronic devices. [0003] The traditional polarization theory is mainly divided into three types: electronic displacement polarization mechanism, ion displacement polarization mechanism and electric dipole orientation polarization mechanism. Electron displacement polarization is mainly the atoms or ions that make up the medium. Under the action of the electric field, the positive and negative charge centers of the atoms or ions do not coincide, that is, the positively charged atomic nuclei and the negative charge centers of the sh...

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Problems solved by technology

However, there are always some space charges inside the actual material. These space charges can also be rearranged under the action of an external electric field. They usually cannot be confined inside the dielectric material but participate in the current of the external circuit, which will lead to leakage. increase in loss

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