Organic Semiconductor Element with Fused Polycyclic Aromatic Ring Structure
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Solution Overview
Problem
Existing organic semiconductor materials face challenges in achieving high carrier mobility and heat resistance, particularly in semiconductor active layers, while also requiring suitable solution processability for manufacturing.
Innovation Solution
A compound or polymer with a specific fused polycyclic aromatic ring structure, represented by Formula 1 or 3, is used in the semiconductor active layer, which includes sulfur atoms and specific linking groups, enhancing carrier mobility and heat resistance, and is suitable for solution processing methods like ink jet or flexographic printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional organic semiconductor materials are used, then solution processability is achieved, but carrier mobility and heat resistance are insufficient
Solution Approach 1:
The patent modifies the molecular structure parameters of organic semiconductor materials by introducing specific fused polycyclic aromatic ring structures with sulfur atoms at defined positions (Formula 1 and Formula 3). This structural parameter change enables the material to simultaneously achieve high carrier mobility through improved charge transport pathways and maintain solution processability through appropriate solubility characteristics of the modified structure
Solution Approach 2:
The patent creates composite molecular structures combining fused polycyclic aromatic rings with sulfur atoms and specific substituent groups (Formula W). This composite structure integrates the electron-transporting capability of the aromatic core with the solubility-enhancing properties of the substituent groups, resolving the contradiction between performance and processability
2Reliability
If conventional organic semiconductor materials are used, then solution processability is achieved, but heat resistance is insufficient
Solution Approach 1:
The patent changes the thermal stability parameters by introducing rigid fused polycyclic aromatic ring structures with sulfur atoms. This structural modification increases the glass transition temperature and thermal decomposition temperature while maintaining solution processability through the balanced molecular design that incorporates both rigid cores and flexible substituent groups
3Reliability
If high-performance organic semiconductor materials are developed, then carrier mobility improves, but manufacturing complexity increases
Solution Approach 1:
The patent designs organic semiconductor materials with self-organizing capabilities through the specific fused polycyclic aromatic ring structures. These structures naturally form ordered assemblies and crystalline patterns during solution processing, eliminating the need for complex post-processing steps or sophisticated manufacturing equipment, thus achieving high carrier mobility with simplified manufacturing
Data Source
Figure 1~2
AI summary
An object is to provide an organic semiconductor element having excellent carrier mobility and heat resistance of a semiconductor active layer, an organic semiconductor composition for obtaining this element, an organic semiconductor film, and a method of manufacturing an organic semiconductor element in which the composition is used, and another object is to provide a compound and an oligomer or a polymer that are suitably used in the organic semiconductor element, the organic semiconductor composition, the organic semiconductor film, and the method of manufacturing an organic semiconductor element. The organic semiconductor element of the present invention includes a compound represented by Formula 1 below in a semiconductor active layer. In Formula 1, X represents a chalcogen atom, p and q each independently represent an integer of 0 to 2, and R1 and R2 each independently represent a halogen atom or a group represented by Formula W below. -S-L-T (W)