Organic Semiconductor Composition for Low-Temperature Carrier Mobility
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Solution Overview
Problem
Existing manufacturing conditions for organic thin film transistors using azaperylene skeleton compounds do not allow for the production of devices with excellent carrier mobility at low temperatures, such as room temperature.
Innovation Solution
A composition comprising a specific compound represented by Formula (1) and a highly acidic fluorinated alcohol, where the alcohol forms hydrogen bonds with the compound, enhancing its solubility and crystallinity, even at low temperatures, thereby improving carrier mobility in organic thin film transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional manufacturing conditions are used for organic thin film transistors with azaperylene skeleton compounds, then the device structure can be formed, but the carrier mobility is insufficient at low temperatures
Solution Approach 1:
The patent changes the chemical composition parameters of the solvent system by introducing highly acidic fluorinated alcohols with specific molecular structures (Formula S1) containing CF3 groups. This chemical parameter change enables the formation of high-quality organic semiconductor films at lower temperatures, resolving the contradiction between maintaining reliable carrier mobility and reducing manufacturing temperature.
Solution Approach 2:
The patent creates a composite solvent system combining highly acidic fluorinated alcohols with other organic solvents in specific ratios (Formula (2)). This composite material approach leverages the unique properties of fluorinated alcohols (high acidity, low steric hindrance) to achieve excellent carrier mobility at low temperatures without requiring high-temperature processing.
2Reliability
If the alcohol content is increased to improve solubility and crystallinity, then the carrier mobility improves, but the manufacturing cost increases
Solution Approach 1:
The patent optimizes the concentration parameter of fluorinated alcohol in the solvent system, establishing specific content ranges (5-50 wt%, preferably 10-30 wt%) where the alcohol provides sufficient solubility enhancement and crystallinity improvement for high carrier mobility, while avoiding excessive alcohol content that would unnecessarily increase costs. This parameter optimization resolves the contradiction between performance improvement and cost control.
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
The composition enables the production of organic thin film transistors with enhanced carrier mobility under low temperature conditions, facilitating easier analysis and purity adjustment, and improving the overall performance and quality of the devices.
Implementation Method 1
the alcohol forms hydrogen bonds with the compound, enhancing its solubility and crystallinity
Data Source
AI summary
An object of the present invention is to provide a composition capable of manufacturing an organic thin film transistor having excellent carrier mobility even under low temperature conditions. The composition of the present invention contains a compound represented by Formula (1) and an alcohol represented by Formula (S1).