Dielectric Device Amorphous Electrodes Crystallinity
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Solution Overview
Problem
Conventional dielectric devices face challenges in enhancing crystallinity and have high manufacturing costs, making it difficult to improve their performance and reliability.
Innovation Solution
A dielectric device structure comprising a first electrode film with a non-oriented or amorphous structure, a preferentially oriented dielectric film, and a second electrode film with a non-oriented or amorphous structure, where the dielectric film is preferably (001), (101), or (110) oriented, and the electrode films are composed of metals or alloys with oxidation-reduction potentials higher than those of the dielectric film to ensure chemical and electrical stability, along with an optional intermediate film or electroconductive oxide layer to enhance adhesion and prevent degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional dielectric devices use traditional electrode films and dielectric films, then the device structure is simple, but the crystallinity of the dielectric is poor and manufacturing cost is high
Solution Approach 1:
The device is segmented into three distinct functional layers: amorphous electrode films (first and second), and preferentially oriented dielectric film in between. This segmentation allows each layer to be optimized independently - the amorphous electrodes provide flexibility and cost-effectiveness while the oriented dielectric provides high crystallinity and performance, resolving the contradiction between manufacturing simplicity and crystallinity enhancement.
Solution Approach 2:
The invention changes the structural parameters of the electrode films from crystalline to amorphous or non-oriented states, while simultaneously optimizing the dielectric film to have preferential orientation. This parameter transformation enables the dielectric to achieve high crystallinity without the complexity of conventional approaches, as the amorphous electrodes do not impose crystallographic constraints that would complicate the manufacturing process.
2Reliability
If conventional dielectric devices use traditional materials and structures, then the device structure is straightforward, but the manufacturing cost is high
Solution Approach 1:
The invention employs amorphous electrode films that can be manufactured using cost-effective deposition techniques without requiring expensive crystalline materials. The amorphous structure allows for simpler, more economical fabrication processes while still providing sufficient electrical functionality. This substitution of expensive crystalline electrodes with cheaper amorphous alternatives directly reduces manufacturing cost while maintaining device reliability through the high-quality oriented dielectric layer.
3Productivity
If conventional dielectric devices use traditional electrode structures, then the fabrication process is simple, but the deposition throughput is low
Solution Approach 1:
The invention changes the structural parameter of the electrode films to amorphous or non-oriented states, which can be deposited more rapidly using conventional sputtering or evaporation techniques without requiring complex in-situ heating or annealing processes. The amorphous structure allows for faster deposition rates compared to crystalline films that require controlled growth conditions, thereby increasing throughput while the overall device complexity remains manageable due to the clear three-layer architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration improves the crystallinity of the dielectric film, allows for the use of inexpensive electrode materials, and increases the throughput of the deposition process, resulting in enhanced reliability and reduced manufacturing costs while maintaining the stability and properties of the dielectric device.
Implementation Method 1
a dielectric film provided on the first electrode film and having a preferentially oriented structure
Implementation Method 2
in the result of X-ray diffraction measurement, an intensity of a peak ascribed to a certain crystal lattice plane is not less than 50% of a total of intensities of all peaks
Implementation Method 3
an oxidation-reduction potential of every metal element forming the first and second electrode films is preferably higher than that of every metal element forming the dielectric film. This makes the dielectric film chemically and electrically stable, without being reduced by the electrode films
Data Source
AI summary
A method of manufacturing a dielectric device includes epitaxially growing a metal film on a substrate, forming a dielectric film on the metal film such that the dielectric film has a preferentially oriented structure, forming a first electrode film having a non-oriented or amorphous structure on the dielectric film, removing the substrate and the metal film from the dielectric film or removing the substrate from the metal film, and forming a second electrode film having a non-oriented or amorphous structure on the dielectric film or the metal film.