Organic Semiconductor Layer for Electrolytic Capacitor Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrolytic capacitors face challenges in achieving sufficient capacitance due to inadequate coverage of the dielectric layer by conductive polymer layers, leading to increased equivalent series resistance and reduced frequency characteristics.
Innovation Solution
The integration of an organic semiconductor layer with a low molecular weight organic semiconductor compound, having a number average molecular weight between 100 to 10,000 and a π electron cloud, is applied over the dielectric layer, allowing for improved carrier mobility and capacitance enhancement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conductive polymer layer is formed on the dielectric layer, then the capacitance is improved, but the equivalent series resistance increases due to inadequate coverage
Solution Approach 1:
The patent changes the molecular weight parameter of the organic semiconductor material from conventional high molecular weight to low molecular weight (100-10,000 range), enabling better penetration and coverage of the dielectric layer surface, thus reducing equivalent series resistance while maintaining capacitance
Solution Approach 2:
The patent uses composite material structure by combining low molecular weight organic semiconductor compounds with specific molecular weight characteristics to achieve both high capacitance and low equivalent series resistance, resolving the contradiction between these two parameters
2Quantity of substance
If the dielectric layer coverage is increased, then the capacitance is improved, but the frequency characteristics are reduced
Solution Approach 1:
The patent optimizes the molecular weight parameter of the organic semiconductor to a specific range (100-10,000), which enables sufficient coverage for high capacitance while maintaining appropriate thickness and carrier mobility for good frequency characteristics
3Ease of manufacture
If a conventional conductive polymer layer is applied, then the manufacturing process is simple, but the coverage of the dielectric layer is inadequate
Solution Approach 1:
The patent changes the molecular weight parameter of the organic semiconductor material to low molecular weight range, which naturally improves coverage and penetration capability without complicating the manufacturing process, thus resolving the contradiction between ease of manufacture and manufacturing precision
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 enables increased capacitance and improved reliability of electrolytic capacitors by ensuring better coverage of the dielectric layer and reducing equivalent series resistance, while maintaining high carrier mobility and conductivity.
Implementation Method 1
The organic semiconductor layer contains an organic semiconductor compound having a number average molecular weight in a range from 100 to 10,000, inclusive, and a π electron cloud. In the organic semiconductor compound, a carrier moves between the molecules of the organic semiconductor compound through the π electron cloud.
Data Source
AI summary
An electrolytic capacitor includes an anode, a dielectric layer formed on the anode, and an organic semiconductor layer covering at least a part of the dielectric layer. The organic semiconductor layer contains an organic semiconductor compound having a number average molecular weight of greater than or equal to 100 and less than or equal to 10,000 and a π electron cloud. In the organic semiconductor compound, a carrier moves between molecules of the organic semiconductor compound through the π electron cloud.