Organic Semiconductor Polymer Atmospheric Stability
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Solution Overview
Problem
Organic semiconductor elements with existing compounds and polymers tend to have reduced semiconductor characteristics in atmospheric conditions, lacking compatibility between durability and maintaining high carrier mobility without protective layers.
Innovation Solution
A specific polymer with a repeating unit structure, represented by Formula (1), is used in the organic semiconductor film, enhancing carrier mobility and durability by suppressing degradation from oxygen and moisture exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing organic semiconductor compounds or polymers are used, then the organic semiconductor element can be manufactured, but the semiconductor characteristics are significantly reduced in atmospheric conditions
Solution Approach 1:
The patent modifies the chemical structure of the polymer by introducing a specific repeating unit with a 5-membered aromatic heterocyclic ring and a 6-membered aromatic heterocyclic ring connected by a direct bond or single bond. This structural parameter change enhances the polymer's resistance to oxygen and moisture degradation, maintaining high carrier mobility in atmospheric conditions without requiring protective layers.
2Reliability
If protective layers or sealing layers are added to maintain semiconductor characteristics, then durability in the atmosphere improves, but device complexity and manufacturing cost increase
Solution Approach 1:
The polymer itself provides protective functionality through its inherent molecular structure. The specific repeating unit structure with aromatic heterocyclic rings creates a material that is intrinsically resistant to atmospheric degradation, eliminating the need for separate protective or sealing layers. The semiconductor layer serves its own protection function.
3Ease of manufacture
If existing polymers are used to reduce cost and improve flexibility, then manufacturing ease improves, but compatibility between semiconductor characteristics and durability is poor
Solution Approach 1:
The patent creates a composite polymer structure by combining specific heterocyclic ring systems in a repeating unit configuration. This composite molecular architecture integrates both the electrical performance required for semiconductor functionality and the chemical stability needed for atmospheric durability, achieving compatibility between semiconductor characteristics and durability while maintaining the cost and flexibility advantages of polymer materials.
Data Source
Figure 1~2
AI summary
Provided are an organic thin film transistor element comprising an organic semiconductor layer containing a specific polymer which has a repeating unit including a structure represented by a specific formula, an organic semiconductor film suitable as the organic semiconductor layer and a method of manufacturing the same, and a polymer and a composition suitable as a constituent material of the organic semiconductor film.