Organic Semiconductor Material with Fluorinated Side Chains for Water Resistance
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Solution Overview
Problem
Current organic thin-film transistors rely on international materials, limiting domestic autonomy and stability due to susceptibility to water and oxygen exposure.
Innovation Solution
Development of a novel organic semiconductor material represented by formula (1), which includes a conjugated polymer with specific molecular structures, enhancing charge-transporting ability and stability, integrated into a thin film transistor design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional organic materials are used in thin-film transistors, then the devices can be manufactured with low process temperature and flexible structure, but the materials are susceptible to water and oxygen exposure leading to poor stability
Solution Approach 1:
The patent employs composite materials by combining the organic semiconductor core structure with fluorinated side chains and aromatic heterocyclic groups. This composite approach creates a material system where the fluorinated groups provide hydrophobic protection against water and oxygen, while the core structure maintains charge-transporting ability, thus resolving the contradiction between reliability and susceptibility to harmful factors.
Solution Approach 2:
The patent changes the chemical parameters of the organic material by introducing fluorinated side chains and specific aromatic heterocyclic groups (X1, X2, X3 representing O, S, Se, Te, NR, etc.). These parameter changes modify the material's chemical properties to achieve both high stability against water and oxygen exposure and maintained charge-transporting performance.
2Adaptability or versatility
If international organic materials are used, then thin-film transistor devices can be manufactured with favorable characteristics, but domestic autonomy is limited due to material availability issues
Solution Approach 1:
The patent develops a novel organic semiconductor material with a specific molecular structure that can be synthesized domestically. By creating a new material class with fluorinated side chains and aromatic heterocyclic groups, the invention replaces dependence on imported international materials with a domestically producible alternative, thus achieving technology autonomy while maintaining the required device characteristics.
3Reliability
If novel organic semiconductor materials with improved stability are developed, then autonomy and performance are enhanced, but the molecular structure complexity increases
Solution Approach 1:
The patent applies local quality by introducing specific functional groups (fluorinated side chains, aromatic heterocyclic groups) at particular positions within the molecular structure. The core conjugated structure maintains charge transport, while the fluorinated side chains locally provide stability against water and oxygen. This localized functional differentiation achieves improved reliability without requiring complete restructuring of the entire molecule.
Solution Approach 2:
The patent segments the molecular structure into distinct functional components: a core conjugated structure for charge transport and fluorinated side chains with aromatic heterocyclic groups for stability. This segmentation allows each part to optimize its specific function, achieving both high stability and acceptable charge-transporting ability while maintaining a manageable molecular architecture.
Data Source
AI summary
An organic semiconductor material is provided. The organic semiconductor material includes a compound represented by formula (1):wherein r and s each independently represent a positive integer of 1 to 20; n represents a positive integer of 2 to 10000; X1, X2 and X3 each independently represent O, S, Se, Te, NR, RCR, RSiR, RGeR or RSnR; Y1 and Y2 each independently represent H, F, Cl, CF3, haloalkyl, CN, R, OR, SR, COOR or COR; and Z1, Z2, Z3 and Z4 each independently represent H, F, Cl, CF3, haloalkyl, CN, R, OR, SR, COOR or COR, wherein R represents alkyl group.