Polymer Memory Cell Carrier Ion Oxidation Prevention
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Solution Overview
Problem
Inorganic solid-state memory devices face challenges with high power consumption, complex architecture, and limited data storage density, as well as silicon-based devices approaching physical size limits, which affect memory retention and efficiency.
Innovation Solution
Incorporating a carrier ion oxidation preventer, such as oxygen scavengers, oxidizable compounds, or antioxidants, into the semiconducting polymer layer of polymer memory cells to mitigate oxidation of carrier ions and electrodes, thereby extending memory retention time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If inorganic solid state technology is used for memory devices, then switching speed and integration density are improved, but power consumption increases and data retention time decreases
Solution Approach 1:
The patent transitions from inorganic semiconductor materials to organic semiconducting polymer materials, fundamentally changing the material parameter to achieve low-power operation while maintaining acceptable switching speeds. The organic materials enable memory operation at lower power levels due to their inherent electrical properties and ability to maintain charge states without continuous power supply.
Solution Approach 2:
The patent employs composite material structures including semiconducting polymer layers combined with metal electrodes (such as aluminum, copper, or silver) and dielectric layers. This composite approach leverages the advantages of each material: organic polymers for low-power operation and metal electrodes for high conductivity, achieving a balance between power consumption and performance.
2Manufacturing precision
If inorganic solid state devices are used, then manufacturing precision and device performance are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent simplifies device architecture by changing from complex inorganic semiconductor structures to simpler organic polymer-based structures. The semiconducting polymer layer can be deposited using solution-processing techniques rather than complex vacuum deposition processes, reducing manufacturing steps and overall device complexity while maintaining functional performance.
Solution Approach 2:
The patent replaces complex mechanical and vacuum-based manufacturing processes with solution-based deposition methods. Organic semiconducting polymers can be applied from solution, eliminating the need for complex vacuum deposition equipment and multi-step fabrication processes required for inorganic semiconductors, thereby reducing device complexity.
3Loss of information
If carrier ions are injected into the semiconducting polymer layer, then memory storage function is achieved, but oxidation of carrier ions and electrodes occurs leading to reduced memory retention
Solution Approach 1:
The patent introduces oxygen scavenger molecules as intermediary substances within the semiconducting polymer layer. These scavenger molecules act as mediators that preferentially react with oxygen, preventing oxygen from oxidizing the carrier ions and electrodes. This intermediary protection mechanism maintains memory retention by eliminating the harmful oxidation pathway while preserving the memory storage function.
Solution Approach 2:
The patent converts the harmful presence of oxygen into a beneficial protective mechanism by incorporating oxygen scavengers that deliberately consume oxygen through controlled oxidation reactions. The oxygen that would otherwise harm the carrier ions and electrodes is instead consumed by the scavenger molecules, transforming a harmful factor into a protective feature that extends memory retention time.
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 approach enhances memory retention properties by preventing or delaying oxidation, leading to improved reliability and efficiency in polymer memory cells for microelectronic devices.
Implementation Method 1
atoms, nanoparticles, molecules or compounds of an oxygen scavenger can be incorporated into the semiconducting polymer layer
Implementation Method 2
the semiconducting polymer layer can include one or more semiconducting polymers and an oxidizable compound
Data Source
AI summary
Improving memory retention properties of a polymer memory cell are disclosed. The methods include providing a semiconducting polymer layer containing at least one organic semiconductor and at least one of a carrier ion oxidation preventer and an electrode oxidation preventer. The oxidation preventers may contain at least one of 1) an oxygen scavenger, 2) a polymer with oxidizable side-chain groups which can be preferentially oxidized over the carrier ions/electrodes, and 3) an oxidizable molecule that can be preferentially oxidized over the carrier ions/electrodes.